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Table Z-1 Limits for Air Contaminants
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Table Z-1 in its entirety
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Table Z-1 Limits for Air Contaminants
Table of Contents
Table Z-1 - Page
1
print page 1
(PDF, 13KB)
|
Substance |
CAS No.
(d) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Acetaldehyde |
75-07-0 |
100 |
180 |
150 |
270 |
|
|
|
|
|
Acetic acid |
64-19-7 |
10 |
25 |
|
|
|
|
|
|
|
Acetic anhydride |
108-24-7 |
|
|
|
|
5 |
20 |
|
|
|
Acetone |
67-64-1 |
750 |
1800 |
1000 |
2400 |
|
|
|
|
|
Acetonitrile |
75-05-8 |
40 |
70 |
60 |
105 |
|
|
|
|
|
2-Acetylaminofluorene; see 1910.1014 |
53-96-3 |
|
|
|
|
|
|
|
|
|
Acetylene dichloride; see 1,
2-Dichloroethylene |
|
|
|
|
|
|
|
|
|
|
Acetylene tetrabromide |
79-27-6 |
1 |
14 |
|
|
|
|
|
|
|
Acrolein |
107-02-8 |
0.1 |
0.25 |
0.3 |
0.8 |
|
|
|
|
|
Acrylamide |
79-06-1 |
|
0.03 |
|
|
|
|
X |
|
|
Acrylonitrile; see 1910.1045 |
107-13-1 |
|
|
|
|
|
|
|
|
|
Aldrin |
309-00-2 |
|
0.25 |
|
|
|
|
X |
|
|
Allyl alcohol |
107-18-6 |
2 |
5 |
4 |
10 |
|
|
X |
|
|
Allyl chloride |
107-05-1 |
1 |
3 |
2 |
6 |
|
|
|
|
|
Allyl glycidyl ether (AGE) |
106-92-3 |
5 |
22 |
10 |
44 |
|
|
|
|
|
Allyl propyl disulfide |
2179-59-1 |
2 |
12 |
3 |
18 |
|
|
|
|
|
| alpha Alumina |
| |
Total dust |
| |
Respirable fraction |
|
1344-28-1 |
|
|
|
|
|
|
|
|
|
| Aluminum (as A1) Metal |
| |
Total dust |
| |
Respirable fraction |
| Pyro
powders |
| Welding
fumes* |
| Soluble
salts |
| Alkyls |
|
7429-90-5 |
|
|
|
|
|
|
|
|
|
4-Aminodiphenyl; see 1910.1011 |
92-67-1 |
|
|
|
|
|
|
|
|
|
2-Aminoethanol; see Ethanolamine |
|
|
|
|
|
|
|
|
|
|
2-Aminopyridine |
504-29-0 |
0.5 |
2 |
|
|
|
|
|
|
|
Amitrole |
61-82-5 |
|
0.2 |
|
|
|
|
|
|
|
Ammonia |
7664-41-7 |
|
|
35 |
27 |
|
|
|
|
|
|
Ammonium sulfamate |
| |
Total dust |
| |
Respirable fraction |
|
7773-06-0 |
|
|
|
|
|
|
|
|
|
n-Amyl acetate |
628-63-7 |
100 |
525 |
|
|
|
|
|
|
|
sec-Amyl acetate |
626-38-0 |
125 |
650 |
|
|
|
|
|
|
|
Aniline and homologs |
62-53-3 |
2 |
8 |
|
|
|
|
X |
|
|
Anisidine (o-,p-isomers) |
29191-52-4 |
|
0.5 |
|
|
|
|
X |
|
|
Antimony and compounds (as Sb) |
7440-36-0 |
|
0.5 |
|
|
|
|
|
|
|
ANTU (alpha Naphthyl-thiourea) |
86-88-4 |
|
0.3 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page 2
print page 2
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Arsenic, inorganic compounds (as As);
see 1910.1018 |
7440-38-2 |
|
|
|
|
|
|
|
|
|
Arsenic, organic compounds (as As)
|
7440-38-2 |
|
0.5 |
|
|
|
|
|
|
|
Arsine |
7784-42-1 |
0.05 |
0.2 |
|
|
|
|
|
|
|
Asbestos; see 1910.1001 and 1926.1101 |
varies |
|
|
|
|
|
|
|
|
|
Atrazine |
1912-24-9 |
5 |
|
|
|
|
|
|
|
|
Azinphos-methyl |
86-50-0 |
|
0.2 |
|
|
|
|
X |
|
|
Barium, soluble compounds (as Ba) |
7440-39-3 |
|
0.5 |
|
|
|
|
|
|
|
| Barium sulfate |
| |
Total dust |
| |
Respirable
fraction |
|
7727-43-7 |
|
|
|
|
|
|
|
|
|
| Benomyl |
| |
Total dust |
| |
Respirable
fraction |
|
17804-35-2 |
|
|
|
|
|
|
|
|
|
| Benzene; see 1910.1028 |
| |
See Table Z-2
for the limits applicable in the Operations or sectors
excluded in 1910.1028* |
|
71-43-2 |
|
|
|
|
|
|
|
|
|
Benzidine; see 1910.1010 |
92-87-5 |
|
|
|
|
|
|
|
|
|
p-Benzoquinone; see Quinone |
|
|
|
|
|
|
|
|
|
|
Benzo (a) pyrene; see Coal Ta pitch
volatiles |
|
|
|
|
|
|
|
|
|
|
Benzoyl peroxide |
94-36-0 |
|
5 |
|
|
|
|
|
|
|
Benzyl chloride |
100-44-7 |
1 |
5 |
|
|
|
|
|
|
|
Beryllium and beryllium compounds (as
Be) |
7440-41-7 |
|
Table Z-2 |
|
Table Z-2 |
|
Table Z-2 |
|
|
|
Biphenyl; see Diphenyl |
|
|
|
|
|
|
|
|
|
|
| Bismuth telluride, Undoped |
| |
Total dust |
| |
Respirable
fraction |
|
1304-82-1 |
|
|
|
|
|
|
|
|
|
Bismuth telluride, Se-doped |
|
|
5 |
|
|
|
|
|
|
|
| Borates, tetra, sodium salts |
| |
Anhydrous |
| |
Decahydrate |
| |
Pentahydrate |
|
| |
| |
1330-43-4 |
| |
1303-96-4 |
| |
12179-04-3 |
|
|
|
|
|
|
|
|
|
|
|
1303-86-2 |
|
|
|
|
|
|
|
|
|
Boron tribromide |
10294-33-4 |
|
|
|
|
1 |
10 |
|
|
|
Boron trifluoride |
7637-07-2 |
|
|
|
|
1 |
3 |
|
|
|
Bromacil |
314-40-9 |
1 |
10 |
|
|
|
|
|
|
|
Bromine |
7726-95-6 |
0.1 |
0.7 |
0.3 |
2 |
|
|
|
|
|
Bromine pentafluoride |
7789-30-2 |
0.1 |
0.7 |
|
|
|
|
|
|
|
Bromoform |
75-25-2 |
0.5 |
5 |
|
|
|
|
X |
|
|
Butadiene (1, 3-Butadiene) |
106-99-0 |
1000 |
2200 |
|
|
|
|
|
|
|
Butane |
106-97-8 |
800 |
1900 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page
3
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(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Butanethiol; see Butyl mercaptan |
|
|
|
|
|
|
|
|
|
|
2-Butanone (Methyl ethyl ketone) |
78-93-3 |
200 |
590 |
300 |
885 |
|
|
|
|
|
2-Butoxyethanol |
111-76-2 |
25 |
120 |
|
|
|
|
X |
|
|
n-Butyl-acetate |
123-86-4 |
150 |
710 |
200 |
950 |
|
|
|
|
|
sec-Butyl acetate |
105-46-4 |
200 |
950 |
|
|
|
|
|
|
|
tert-Butyl-acetate |
540-88-5 |
200 |
950 |
|
|
|
|
|
|
|
Butyl acrylate |
141-32-2 |
10 |
55 |
|
|
|
|
|
|
|
n-Butyl alcohol |
71-36-3 |
|
|
|
|
50 |
150 |
X |
|
|
sec-Butyl alcohol |
78-92-2 |
100 |
305 |
|
|
|
|
|
|
|
tert-Butyl alcohol |
75-65-0 |
100 |
300 |
150 |
450 |
|
|
|
|
|
Butylamine |
109-73-9 |
|
|
|
|
5 |
15 |
X |
|
|
tert-Butyl chromate (as CrO3) |
1189-85-1 |
|
|
|
|
|
0.1 |
X |
|
|
n-Butyl glycidyl ether (BGE) |
2426-08-6 |
25 |
135 |
|
|
|
|
|
|
|
n-Butyl lactate |
138-22-7 |
5 |
25 |
|
|
|
|
|
|
|
Butyl mercaptan |
109-79-5 |
0.5 |
1.5 |
|
|
|
|
|
|
|
o-sec-Butylphenol |
89-72-5 |
5 |
30 |
|
|
|
|
X |
|
|
p-tert-Butyltoluene |
98-51-1 |
10 |
60 |
20 |
120 |
|
|
|
|
|
Cadmium fume (as Cd) |
7440-43-9 |
|
0.1 |
|
|
|
0.3 |
|
|
|
Cadmium dust (as Cd) |
7440-43-9 |
|
0.2 |
|
|
|
0.6 |
|
|
|
| Calcium Carbonate |
| |
Total dust |
| |
Respirable
fraction |
|
1317-65-3 |
|
|
|
|
|
|
|
|
|
Calcium cyanamide |
156-62-7 |
|
0.5 |
|
|
|
|
|
|
|
Calcium hydroxide |
1305-62-0 |
|
5 |
|
|
|
|
|
|
|
Calcium oxide |
1305-78-8 |
|
5 |
|
|
|
|
|
|
|
| Calcium silicate |
| |
Total dust |
| |
Respirable
fraction |
|
1344-95-2 |
|
|
|
|
|
|
|
|
|
| Calcium sulfate |
| |
Total dust |
| |
Respirable
fraction |
|
7778-18-9 |
|
|
|
|
|
|
|
|
|
Camphor, synthetic |
76-22-2 |
|
2 |
|
|
|
|
|
|
|
|
105-60-2 |
|
|
|
|
|
|
|
|
|
Captafol (DifolatanR) |
2425-06-1 |
|
0.1 |
|
|
|
|
|
|
|
Captan |
133-06-2 |
|
5 |
|
|
|
|
|
|
|
Carbaryl ((SevinR) |
63-25-2 |
|
5 |
|
|
|
|
|
|
|
Carbofuran (FuradanR) |
1563-66-2 |
|
0.1 |
|
|
|
|
|
|
|
Carbon black |
1333-86-4 |
|
3.5 |
|
|
|
|
|
|
|
Carbon dioxide |
124-38-9 |
10000f |
18000 |
30000 |
54000 |
|
|
|
|
|
Carbon disulfide |
75-15-0 |
4 |
12 |
12 |
36 |
|
|
X |
|
table of contents
Table Z-1 - Page
4
print page 4
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Carbon monoxide |
630-08-0 |
35 |
40 |
|
|
200 |
229 |
X |
|
|
Carbon tetrabromide |
558-13-4 |
0.1 |
1.4 |
0.3 |
4 |
|
|
|
|
|
Carbon tetrachloride |
56-23-5 |
2 |
12.6 |
|
|
|
|
|
|
|
Carbonyl fluoride |
353-50-4 |
2 |
5 |
5 |
15 |
|
|
|
|
|
Catechol (pyrocatechol) |
120-80-9 |
5 |
20 |
|
|
|
|
|
|
|
| Cellulose |
| |
Total dust |
| |
Respirable
fraction |
|
9004-34-6 |
|
|
|
|
|
|
|
|
|
Cesium hydroxide |
21351-79-1 |
|
2 |
|
|
|
|
|
|
|
Chlordane |
57-74-9 |
|
0.5 |
|
|
|
|
X |
|
|
Chlorinated camphene |
8001-35-2 |
|
0.5 |
|
1 |
|
|
X |
|
|
Chlorinated diphenyl oxide |
55720-99-5 |
|
0.5 |
|
|
|
|
|
|
|
Chlorine |
7782-50-5 |
0.5 |
1.5 |
1 |
3 |
|
|
|
|
|
Chlorine dioxide |
10049-04-4 |
0.1 |
0.3 |
0.3 |
0.9 |
|
|
|
|
|
Chlorine trifluoride |
7790-91-2 |
|
|
|
|
0.1 |
0.4 |
|
|
|
Chloroacetaldehyde |
107-20-0 |
|
|
|
|
1 |
3 |
|
|
|
a-Chloroacetophene (Phenacyl chloride) |
532-27-4 |
0.05 |
.03 |
|
|
|
|
|
|
|
Chloroacetyl chloride |
79-04-9 |
0.05 |
0.2 |
|
|
|
|
|
|
|
Chlorobenzyne |
108-90-7 |
75 |
350 |
|
|
|
|
|
|
|
o-Chlorobenzylidene malononitrile |
2698-41-1 |
|
|
|
|
0.05 |
0.4 |
X |
|
|
Chlorobromomethane |
74-97-5 |
200 |
1050 |
|
|
|
|
|
|
|
2-Chloro-1, 3-butadiene; see b-Chloropene |
|
|
|
|
|
|
|
|
|
|
Chlorodifluoromethane |
75-45-6 |
1000 |
3500 |
|
|
|
|
|
|
|
Chlorodiphenyl (42% Chlorine) (PCB) |
53469-21-9 |
|
1 |
|
|
|
|
X |
|
|
Chlorodiphenyl (54% Chlorine) (PCB) |
11097-69-1 |
|
0.5 |
|
|
|
|
X |
|
|
1-Chloro, 2, 3-epoxypropane; see
Epichlorohydrin |
|
|
|
|
|
|
|
|
|
|
2-Chloroethanol; see Ethylene
chlorohydrin |
|
|
|
|
|
|
|
|
|
|
Chloroethylene; see Vinyl chloride |
|
|
|
|
|
|
|
|
|
|
Chloroform (Trichloromethane) |
67-66-3 |
2 |
9.78 |
|
|
|
|
|
|
|
bis (Chloromethyl) ether; see
1910.1008 |
542-88-1 |
|
|
|
|
|
|
|
|
|
Chlotromethyl methyl ether; see
1910.1006 |
107-30-2 |
|
|
|
|
|
|
|
|
|
1-Chloro-1-nitropropane |
600-25-9 |
2 |
10 |
|
|
|
|
|
|
|
Chloropentafluoroethane |
76-15-3 |
1000 |
6320 |
|
|
|
|
|
|
|
Chloropicrine |
76-06-2 |
0.1 |
0.7 |
|
|
|
|
|
|
|
beta-Chloroprene |
126-99-8 |
10 |
35 |
|
|
|
|
X |
|
|
o-Chlorostyrene |
2039-87-4 |
50 |
285 |
75 |
428 |
|
|
|
|
|
0-Chlorotoluene |
95-49-8 |
50 |
250 |
|
|
|
|
|
|
|
| 2-Chloro-6-trichloro-methyl pyridine |
| |
Total dust |
| |
Respirable
fraction |
|
1929-82-4 |
|
|
|
|
|
|
|
|
|
Chlorpyrifos |
2921-88-2 |
0.2 |
|
|
|
|
|
X |
|
|
Chromic acid and chromates (as CrO3) |
7440-47-3 |
|
|
|
|
0.1 |
|
|
|
table of contents
Table Z-1 - Page
5
print page 5
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Chromium (II) compounds (as Cr) |
7440-47-3 |
|
0.5 |
|
|
|
|
|
|
|
Chromium (III) compounds (as Cr) |
7440-47-3 |
|
0.5 |
|
|
|
|
|
|
|
Chromium metal (as Cr) |
7440-47-3 |
|
1 |
|
|
|
|
|
|
|
Chrysene; see Coal tar pitch volatiles |
|
|
|
|
|
|
|
|
|
|
| Clopidol |
| |
Total dust |
| |
Respirable
fraction |
|
2971-90-6 |
|
|
|
|
|
|
|
|
|
Coal dust (less than 5% SiO2),
Respirable fraction |
|
|
2 |
|
|
|
|
|
|
|
Coal dust (greater than or equal to 5%
SiO2), Respirable quartz fraction |
|
|
0.1 |
|
|
|
|
|
|
|
Coal tar pitch volatiles (benzene
fraction), anthracene, BaP, phenanthrene, acridine, chrysene,
pyrene. |
65996-93-2 |
|
0.2 |
|
|
|
|
|
|
|
Cobalt metal, dust, and fume (as Co) |
7440-48-4 |
|
0.05 |
|
|
|
|
|
|
|
Cobalt carbonyl (as Co) |
10210-68-1 |
|
0.1 |
|
|
|
|
|
|
|
Cobalt hydrocarbonyl (as Co) |
16842-03-8 |
|
0.1 |
|
|
|
|
|
|
|
Coke oven emissions; see 1910.1029 |
|
|
|
|
|
|
|
|
|
|
| Copper |
| |
Fume (as Cu) |
| |
Dusts and
mists (as Cu) |
|
7440-50-8 |
|
|
|
|
|
|
|
|
|
Cotton dust (raw) |
|
|
1 |
|
|
|
|
|
|
|
This 8-hour TWA applies to respirable
dust as measured by a vertical elutriator cotton dust sampler or
equivalent instrument. The time-weighted average applies to the
cotton waste processing operations of waste recycling (sorting,
blending, cleaning and willowing) and garneting. See also
1910.1043 for cotton dust limits applicable to other sectors. |
|
|
| Crag herbicide (Sesone) |
| |
Total dust |
| |
Respirable
fraction |
|
|
|
|
|
|
|
|
|
|
|
Cresol, all isomers |
1319-77-3 |
5 |
22 |
|
|
|
|
X |
|
|
Crotonaldehyde |
123-73-9;
4170-30-3 |
2 |
6 |
|
|
|
|
|
|
|
Crufomate |
299-86-5 |
|
5 |
|
|
|
|
|
|
|
Cumene |
98-82-8 |
50 |
245 |
|
|
|
|
X |
|
|
Cyanamide |
420-04-2 |
|
2 |
|
|
|
|
|
|
|
Cyanides (as CN) |
varies with compound |
|
5 |
|
|
|
|
|
|
|
Cyanogen |
460-19-5 |
10 |
20 |
|
|
|
|
|
|
|
Cyanogen chloride |
506-77-4 |
|
|
|
|
0.3 |
0.6 |
|
|
|
Cyclohexane |
110-82-7 |
300 |
1050 |
|
|
|
|
|
|
|
Cyclohexanol |
108-93-0 |
50 |
200 |
|
|
|
|
X |
|
|
Cyclohexanone |
108-94-1 |
25 |
100 |
|
|
|
|
X |
|
|
Cyclohexene |
110-83-8 |
300 |
1015 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page
6
print page 6
(PDF,
13KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Cyclohexylamine |
108-91-8 |
10 |
40 |
|
|
|
|
|
|
|
Cyclonite |
121-82-4 |
|
1.5 |
|
|
|
|
X |
|
|
Cyclopentadiene |
542-92-7 |
75 |
200 |
|
|
|
|
|
|
|
Cyclopentane |
287-92-3 |
600 |
1720 |
|
|
|
|
|
|
|
Cyhexatin |
13121-70-5 |
|
5 |
|
|
|
|
|
|
|
2,4-D (Dichlorophenoxyacetic acid) |
94-75-7 |
|
10 |
|
|
|
|
|
|
|
Decaborane |
17702-41-9 |
0.05 |
.3 |
0.15 |
0.9 |
|
|
X |
|
|
Demeton (SystoxR) |
8065-48-3 |
|
0.1 |
|
|
|
|
X |
|
|
Dichlorodiphenyltrichloroethane (DDT) |
50-29-3 |
|
1 |
|
|
|
|
X |
|
|
Dichlorvos (DDVP) |
62-73-7 |
|
1 |
|
|
|
|
X |
|
|
Diacetone alcohol
(4-Hydroxy-4-methyl-2-pentanone) |
123-42-2 |
50 |
240 |
|
|
|
|
|
|
|
1,2-Diaminoethane; see Ethylenediamine |
|
|
|
|
|
|
|
|
|
|
Diazinon |
333-41-5 |
|
0.1 |
|
|
|
|
X |
|
|
Diazomethane |
334-88-3 |
0.2 |
0.4 |
|
|
|
|
|
|
|
Diborane |
19287-45-7 |
0.1 |
0.1 |
|
|
|
|
|
|
|
1,2-Dibromo-3-chloropropane (DBCP);
see 1910.1044 |
96-12-8 |
|
|
|
|
|
|
|
|
|
2-N-Dibutyleaminoethanol |
102-81-8 |
2 |
14 |
|
|
|
|
|
|
|
Dibutyl phosphate |
107-66-4 |
1 |
5 |
2 |
10 |
|
|
|
|
|
Dibutyl phthalate |
84-74-2 |
|
5 |
|
|
|
|
|
|
|
Dichloroacetylene |
7572-29-4 |
|
|
|
|
0.1 |
0.4 |
|
|
|
o-Dichlorobenzene |
95-50-1 |
|
|
|
|
50 |
300 |
|
|
|
p-Dichlorobenzene |
106-46-7 |
75 |
450 |
110 |
675 |
|
|
|
|
|
3,3'-Dichlorobenzidine; see 1910.1007 |
91-94-1 |
|
|
|
|
|
|
|
|
|
Dichlorodifluoromethane |
75-71-8 |
1000 |
4950 |
|
|
|
|
|
|
|
1,3-Dichloro-5,5-dimethyl hydantoin |
118-52-5 |
|
0.2 |
|
0.4 |
|
|
|
|
|
1,1-Dichloroethane |
75-34-3 |
100 |
400 |
|
|
|
|
|
|
|
1,2-Dichloroethylene |
540-59-0 |
200 |
790 |
|
|
|
|
|
|
|
Dichloroethyl ether |
111-44-4 |
5 |
30 |
10 |
60 |
|
|
X |
|
|
Dichloromethane; see Methylene
chloride |
|
|
|
|
|
|
|
|
|
|
Dichloromonofluoromethane |
75-43-4 |
10 |
40 |
|
|
|
|
|
|
|
1,1-Dichloro-1-nitroethane |
594-72-9 |
2 |
10 |
|
|
|
|
|
|
|
1,2-Dichloropropane; see Propylene
dichloride |
|
|
|
|
|
|
|
|
|
|
1,3-Dichloropropane |
542-75-6 |
1 |
5 |
|
|
|
|
|
|
|
2,2-Dichloropropionic acid |
75-99-0 |
1 |
6 |
|
|
|
|
|
|
|
Dichlorotetrafluoroethane |
76-14-2 |
1000 |
7000 |
|
|
|
|
|
|
|
Dicrotophos |
141-66-2 |
|
0.25 |
|
|
|
|
X |
|
|
Dicyclopentadiene |
77-73-6 |
5 |
30 |
|
|
|
|
|
|
|
| Dicyclopentadienyl iron |
| |
Total dust |
| |
Respirable
fraction |
|
102-54-5 |
|
|
|
|
|
|
|
|
|
Dieldrin |
60-57-1 |
|
0.25 |
|
|
|
|
X |
|
|
Diethanolamine |
111-42-2 |
3 |
15 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page
7
print page 7
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Diethylamine |
109-89-7 |
10 |
30 |
25 |
75 |
|
|
|
|
|
2-Diethylaminoethanol |
100-37-8 |
10 |
50 |
|
|
|
|
X |
|
|
Diethylene triamine |
111-40-0 |
1 |
4 |
|
|
|
|
|
|
|
Diethyl ether; see Ethyl ether |
|
|
|
|
|
|
|
|
|
|
Diethyl ketone |
96-22-0 |
200 |
705 |
|
|
|
|
|
|
|
Diethyl phthalate |
84-66-2 |
|
5 |
|
|
|
|
|
|
|
Difluorodibromomethane |
75-61-6 |
100 |
860 |
|
|
|
|
|
|
|
Diglycidyl ether (DGE) |
2238-07-5 |
0.1 |
0.5 |
|
|
|
|
|
|
|
Dihydroxybenzene; see Hydroquinone |
|
|
|
|
|
|
|
|
|
|
Diisobutyl ketone |
108-83-8 |
25 |
150 |
|
|
|
|
|
|
|
Diisopropylamine |
108-18-9 |
5 |
20 |
|
|
|
|
X |
|
|
4-Dimethylaminoazobenzene; see
1910.1015 |
60-11-7 |
|
|
|
|
|
|
|
|
|
Dimethoxymethane; see Methylal |
|
|
|
|
|
|
|
|
|
|
Dimethyl acetamide |
127-19-5 |
10 |
35 |
|
|
|
|
X |
|
|
Dimethylamine |
124-40-3 |
10 |
18 |
|
|
|
|
|
|
|
Dimethylaminobenzene; see Xylidine |
|
|
|
|
|
|
|
|
|
|
Dimethylaniline (N-Dimethylaniline) |
121-69-7 |
5 |
25 |
10 |
50 |
|
|
X |
|
|
Dimethylbenzene; see Xylene |
|
|
|
|
|
|
|
|
|
|
Dimethyl-1,2-dibromo-2,2-dichloroethyl
phosphate |
300-76-5 |
|
3 |
|
|
|
|
X |
|
|
Dimethylformamide |
68-12-2 |
10 |
30 |
|
|
|
|
X |
|
|
2,6-Dimethyl-4-heptanone; see
Diisobutyl ketone |
|
|
|
|
|
|
|
|
|
|
1,1-Dimethylhydrazine |
57-14-7 |
0.5 |
1 |
|
|
|
|
X |
|
|
Dimethylphthalate |
131-11-3 |
|
5 |
|
|
|
|
|
|
|
Dimethyl sulfate |
77-78-1 |
0.1 |
0.5 |
|
|
|
|
X |
|
|
Dinitolmide (3,5-Dinitro-o-toluamide) |
148-01-6 |
|
5 |
|
|
|
|
|
|
|
| Dinitrobenzene (all isomers) |
| |
alpha |
| |
meta |
| |
para |
|
| |
| |
528-29-0 |
| |
99-65-0 |
| |
100-25-4 |
|
|
|
|
|
|
|
|
|
|
Dinitro-o-cresol |
534-52-1 |
|
0.2 |
|
|
|
|
X |
|
|
Dinitrotoluene |
25321-14-6 |
|
1.5 |
|
|
|
|
X |
|
|
Dioxane (Diethylene dioxide) |
123-91-1 |
25 |
90 |
|
|
|
|
X |
|
|
Dioxathion (Delnav) |
78-34-2 |
|
0.2 |
|
|
|
|
X |
|
|
Diphenyl (Biphenyl) |
92-52-4 |
0.2 |
1 |
|
|
|
|
|
|
|
Diphenylamine |
122-39-4 |
|
10 |
|
|
|
|
|
|
|
Diphenylmethane diisocyanate; see
Methylene bisphenylisocyanate |
|
|
|
|
|
|
|
|
|
|
Dipropylene glycol methyl ether |
34590-94-8 |
100 |
600 |
150 |
900 |
|
|
X |
|
|
Dipropyl ketone |
123-19-3 |
50 |
235 |
|
|
|
|
|
|
|
Diquat |
85-00-7 |
|
0.5 |
|
|
|
|
|
|
|
Di-sec octyl phthalate
(Di-2-ethylhexyl-phthalate) |
117-81-7 |
|
5 |
|
10 |
|
|
|
|
|
Disulfram |
97-77-8 |
|
2 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page
8
print page 8
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Disulfoton |
298-04-4 |
|
0.1 |
|
|
|
|
X |
|
|
2,6-Di-tert-butyl-p-cresol |
128-37-0 |
|
10 |
|
|
|
|
|
|
|
Diuron |
330-54-1 |
|
10 |
|
|
|
|
|
|
|
Divinyl benzene |
1321-74-0 |
10 |
50 |
|
|
|
|
|
|
|
| Emery |
| |
Total dust |
| |
Respirable
fraction |
|
112-62-9 |
|
|
|
|
|
|
|
|
|
Endosulfan |
115-29-7 |
|
0.1 |
|
|
|
|
X |
|
|
Endrin |
72-20-8 |
|
0.1 |
|
|
|
|
X |
|
|
Epichlorohydrin |
106-89-8 |
2 |
8 |
|
|
|
|
X |
|
|
EPN |
2104-64-5 |
|
0.5 |
|
|
|
|
X |
|
|
1,2-Epoxypropane; see Propylene oxide |
|
|
|
|
|
|
|
|
|
|
2,3-Epoxy-1-propanol; see Glycidol |
|
|
|
|
|
|
|
|
|
|
Ethanethiol; see Ethyl mercaptan |
|
|
|
|
|
|
|
|
|
|
Ethanolamine |
141-43-5 |
3 |
8 |
6 |
15 |
|
|
|
|
|
Ethion |
563-12-2 |
|
0.4 |
|
|
|
|
X |
|
|
2-Ethoxyethanol |
110-80-5 |
200 |
740 |
|
|
|
|
X |
|
|
2-Ethoxyethyl acetate (Cellosolve
acetate) |
111-15-9 |
100 |
540 |
|
|
|
|
X |
|
|
Ethyl acetate |
141-78-6 |
400 |
1400 |
|
|
|
|
|
|
|
Ethyl acrylate |
140-88-5 |
5 |
20 |
25 |
100 |
|
|
X |
|
|
Ethyl alcohol (Ethanol) |
64-17-5 |
1000 |
1900 |
|
|
|
|
|
|
|
Ethylamine |
75-04-7 |
10 |
18 |
|
|
|
|
|
|
|
Ethyl amyl ketone
(5-Methyl-3-heptanone) |
541-85-5 |
25 |
130 |
|
|
|
|
|
|
|
Ethyl benzene |
100-41-4 |
100 |
435 |
125 |
545 |
|
|
|
|
|
Ethyl bromide |
74-96-4 |
200 |
890 |
250 |
1110 |
|
|
|
|
|
Ethyl butyl ketone (3-Heptanone) |
106-35-4 |
50 |
230 |
|
|
|
|
|
|
|
Ethyl chloride |
75-00-3 |
1000 |
2600 |
|
|
|
|
|
|
|
Ethyl ether |
60-29-7 |
400 |
1200 |
500 |
1500 |
|
|
|
|
|
Ethyl formate |
109-94-4 |
100 |
300 |
|
|
|
|
|
|
|
Ethyl mercaptan |
75-08-1 |
0.5 |
1 |
|
|
|
|
|
|
|
Ethyl silicate |
78-10-4 |
10 |
85 |
|
|
|
|
|
|
|
Ethylene chlorohydrin |
107-07-3 |
|
|
|
|
1 |
3 |
X |
|
|
Ethylenediamine |
107-15-3 |
10 |
25 |
|
|
|
|
|
|
|
Ethylene dibromide |
106-93-4 |
Table Z-2 |
Table Z-2 |
Table Z-2 |
Table Z-2 |
Table Z-2 |
Table Z-2 |
Table
Z-2 |
|
|
Ethylene dichloride |
107-06-2 |
1 |
4 |
2 |
8 |
|
|
|
|
|
Ethylene glycol |
107-21-1 |
|
|
|
|
50 |
125 |
|
|
|
Ethylene glycol dinitrate |
628-96-6 |
|
|
|
0.1 |
|
|
X |
|
|
Ethylene glycol methyl acetate; see
Methyl cellosolve acetate Ethyleneimine; see 1910.1012 |
151-56-4 |
|
|
|
|
|
|
|
|
|
Ethylene oxide; see 1910.1047 |
75-21-8 |
|
|
|
|
|
|
|
|
|
Ethylidene chloride; see
1,1-Dichlorethane |
|
|
|
|
|
|
|
|
|
table of contents
Table Z-1 - Page 9
print page 9
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Ethylidene norbornene |
16219-75-3 |
|
|
|
|
5 |
25 |
|
|
|
N-Ethylmorpholine |
100-74-3 |
5 |
23 |
|
|
|
|
X |
|
|
Fenamiphos |
22224-92-6 |
|
0.1 |
|
|
|
|
X |
|
|
Fensulfothion (Dasanit) |
115-90-2 |
|
0.1 |
|
|
|
|
|
|
|
Fenthion |
55-38-9 |
|
0.2 |
|
|
|
|
X |
|
|
|
14484-64-1 |
|
|
|
|
|
|
|
|
|
Ferrovanadium dust |
12604-58-9 |
|
1 |
|
3 |
|
|
|
|
|
Fluorides (as F) |
varies with compound |
|
2.5 |
|
|
|
|
|
|
|
Fluorine |
7782-41-4 |
0.1 |
0.2 |
|
|
|
|
|
|
|
Fluorotrichloromethane (Trichlorofluoromethane) |
75-69-4 |
|
|
|
|
1000 |
5600 |
|
|
|
Fonofos |
944-22-9 |
|
0.1 |
|
|
|
|
X |
|
|
Formaldehyde; see 1910.1048; see Table
Z-2 for operations or sectors excluded from 1910.1048 or for
which limit(s) is(are) stayed. |
50-00-0 |
|
|
|
|
|
|
|
|
|
Formamide |
75-12-7 |
20 |
30 |
30 |
45 |
|
|
|
|
|
Formic acid |
64-18-6 |
5 |
9 |
|
|
|
|
|
|
|
Furfural |
98-01-1 |
2 |
8 |
|
|
|
|
X |
|
|
Furfuryl alcohol |
98-00-0 |
10 |
40 |
15 |
60 |
|
|
X |
|
|
Gasoline |
8006-61-9 |
300 |
900 |
500 |
1500 |
|
|
|
|
|
Germanium tetrahydride |
7782-65-2 |
0.2 |
0.6 |
|
|
|
|
|
|
|
Glutaraldehyde |
111-30-8 |
|
|
|
|
0.2 |
0.8 |
|
|
|
| Glycerin (mist) |
| |
Total dust |
| |
Respirable
fraction |
|
56-81-5 |
|
|
|
|
|
|
|
|
|
Glycidol |
556-52-5 |
25 |
75 |
|
|
|
|
|
|
|
Glycol monoethyl ether; see
2-Ethoxyethanol |
|
|
|
|
|
|
|
|
|
|
Grain dust (oat, wheat, barley) |
|
|
10 |
|
|
|
|
|
|
|
Graphite, natural respirable dust |
7782-42-5 |
|
2.5 |
|
|
|
|
|
|
|
| Graphite, synthetic |
| |
Total dust |
| |
Respirable
fraction |
|
|
|
|
|
|
|
|
|
|
|
GuthionR; see Azinphos methyl |
|
|
|
|
|
|
|
|
|
|
| Gypsum |
| |
Total dust |
| |
Respirable
fraction |
|
13397-24-5 |
|
|
|
|
|
|
|
|
|
Hafnium |
7440-58-6 |
|
0.5 |
|
|
|
|
|
|
|
Heptachlor |
76-44-8 |
|
0.5 |
|
|
|
|
X |
|
|
Heptane (n-Heptane) |
142-82-5 |
400 |
1600 |
500 |
2000 |
|
|
|
|
|
Hexachlorobutadiene |
87-68-3 |
0.02 |
0.24 |
|
|
|
|
|
|
|
Hexachlorocyclo-pentadiene |
77-47-4 |
0.01 |
0.1 |
|
|
|
|
|
|
table of contents
Table Z-1 - Page
10
print page 10
(PDF,
13KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Hexachloroethane |
67-72-1 |
1 |
10 |
|
|
|
|
X |
|
|
Hexachloronaphthalene |
1335-87-1 |
|
0.2 |
|
|
|
|
X |
|
|
Hexafluoroacetone |
684-16-2 |
0.1 |
0.7 |
|
|
|
|
X |
|
|
n-Hexane |
110-54-3 |
50 |
180 |
|
|
|
|
|
|
|
Hexane isomers |
varies with compound |
500 |
1800 |
1000 |
3600 |
|
|
|
|
|
2-Hexanone (Methyl n-butyl ketone) |
591-78-6 |
5 |
20 |
|
|
|
|
|
|
|
Hexone (Methyl isobutyl ketone) |
108-10-1 |
50 |
205 |
75 |
300 |
|
|
|
|
|
sec-Hexyl acetate |
108-84-9 |
50 |
300 |
|
|
|
|
|
|
|
Hexylene glycol |
107-41-5 |
|
|
|
|
25 |
125 |
|
|
|
Hydrazine |
302-01-2 |
0.1 |
0.1 |
|
|
|
|
X |
|
|
Hydrogenated terphenyls |
61788-32-7 |
0.5 |
5 |
|
|
|
|
|
|
|
Hydrogen bromide |
10035-10-6 |
|
|
|
|
3 |
10 |
|
|
|
Hydrogen chloride |
7647-01-0 |
|
|
|
|
5 |
7 |
|
|
|
Hydrogen cyanide |
74-90-8 |
|
|
4.7 |
5 |
|
|
X |
|
|
Hydrogen fluoride (as F) |
7664-39-3 |
3 |
6 |
|
|
|
|
|
|
|
Hydrogen peroxide |
7722-84-1 |
1 |
1.4 |
|
|
|
|
|
|
|
Hydrogen selenide (as Se) |
7783-07-5 |
0.05 |
0.2 |
|
|
|
|
|
|
|
Hydrogen sulfide |
7783-06-4 |
10 |
14 |
15 |
21 |
|
|
|
|
|
Hydroquinone |
123-31-9 |
|
2 |
|
|
|
|
|
|
|
2-Hydroxypropyl acrylate |
999-61-1 |
0.5 |
3 |
|
|
|
|
X |
|
|
Indene |
95-13-6 |
10 |
45 |
|
|
|
|
|
|
|
Indium and compounds (as In) |
7440-74-6 |
|
0.1 |
|
|
|
|
|
|
|
Iodine |
7553-56-2 |
|
|
|
|
0.1 |
1 |
|
|
|
Iodoform |
75-47-8 |
0.6 |
10 |
|
|
|
|
|
|
|
| Iron oxide dust and fume (as Fe) |
| |
Total
particulate |
|
|
|
|
|
|
|
|
|
|
|
Iron pentacarbonyl (as Fe) |
13463-40-6 |
0.1 |
0.8 |
0.2 |
1.6 |
|
|
|
|
|
Iron salts (soluble) (as Fe) |
varies with compound |
|
1 |
|
|
|
|
|
|
|
Isomyl acetate |
123-92-2 |
100 |
525 |
|
|
|
|
|
|
|
Isomyl alcohol (primary and secondary) |
123-51-3 |
100 |
360 |
125 |
450 |
|
|
|
|
|
Isobutyl acetate |
110-19-0 |
150 |
700 |
|
|
|
|
|
|
|
Isobutyl alcohol |
78-83-1 |
50 |
150 |
|
|
|
|
|
|
|
Isooctyl alcohol |
26952-21-6 |
50 |
270 |
|
|
|
|
X |
|
|
Isophorone |
78-59-1 |
4 |
23 |
|
|
|
|
|
|
|
Isophorone diisocyanate |
4098-71-6 |
0.005 |
|
0.02 |
|
|
|
X |
|
|
2-isopropoxyethanol |
109-59-1 |
25 |
105 |
|
|
|
|
|
|
|
Isopropyl acetate |
108-21-4 |
250 |
950 |
310 |
1185 |
|
|
|
|
|
Isopropyl alcohol |
67-63-0 |
400 |
980 |
500 |
1225 |
|
|
|
|
|
Isopropylamine |
75-31-0 |
5 |
12 |
10 |
24 |
|
|
|
|
|
N-isopropylaniline |
768-52-5 |
2 |
10 |
|
|
|
|
X |
|
table of contents
Table Z-1 - Page
11
print page 11
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Isopropyl ether |
108-20-3 |
500 |
2100 |
|
|
|
|
|
|
|
Isopropyl glycidyl ether (IGE) |
4016-14-2 |
50 |
240 |
75 |
360 |
|
|
|
|
|
| Kaolin |
| |
Total dust |
| |
Respirable
fraction |
|
|
|
|
|
|
|
|
|
|
|
Ketene |
463-51-4 |
0.5 |
0.9 |
1.5 |
3 |
|
|
|
|
|
Lead inorganic (as Pb); see 1910.1025 |
7439-92-1 |
|
|
|
|
|
|
|
|
|
| Limestone |
| |
Total dust |
| |
Respirable
fraction |
|
1317-65-3 |
|
|
|
|
|
|
|
|
|
Lindane |
58-89-9 |
|
0.5 |
|
|
|
|
X |
|
|
Lithium hydride |
7580-67-8 |
|
0.025 |
|
|
|
|
|
|
|
L.P.G. (liquified petroleum gas) |
68476-85-7 |
1000 |
1800 |
|
|
|
|
|
|
|
| Magnesite |
| |
Total dust |
| |
Respirable
fraction |
|
546-93-0 |
|
|
|
|
|
|
|
|
|
| Magnesium oxide fume |
| |
Total
particulate |
|
1309-48-4 |
|
|
|
|
|
|
|
|
|
|
121-75-5 |
|
|
|
|
|
|
X |
|
|
Maleic anhydride |
108-31-6 |
0.25 |
1 |
|
|
|
|
|
|
|
Manganese compounds (as Mn) |
7439-96-5 |
|
|
|
|
|
5 |
|
|
|
Manganese fume (as Mn) |
7439-96-5 |
|
1 |
|
3 |
|
|
|
|
|
Manganese cyclopenta-dienyl
tricarbonyl (as Mn) |
12079-65-1 |
|
0.1 |
|
|
|
|
X |
|
|
Manganese tetroxide (as Mn) |
1317-35-7 |
|
1 |
|
|
|
|
|
|
|
| Marble |
| |
Total dust |
| |
Respirable
fraction |
|
1317-65-3 |
|
|
|
|
|
|
|
|
|
Mercury (aryl and inorganic) (as Hg) |
7439-97-6 |
|
|
|
|
|
0.1 |
X |
|
|
Mercury (organo) alkyl compounds (as
Hg) |
7439-97-6 |
|
0.01 |
|
0.03 |
|
|
X |
|
|
Mercury (vapor) (as Hg) |
7439-97-6 |
|
0.05 |
|
|
|
|
X |
|
|
Mesityl oxide |
141-79-7 |
15 |
60 |
25 |
100 |
|
|
|
|
|
Methacrylic acid |
79-41-4 |
20 |
70 |
|
|
|
|
X |
|
|
Methanethiol; see Methyl mercaptan |
|
|
|
|
|
|
|
|
|
|
Methomyl (Lannate) |
16752-77-5 |
|
2.5 |
|
|
|
|
|
|
|
|
72-43-5 |
|
|
|
|
|
|
|
|
|
2-Methoxyethanol; see Methyl
cellosolve |
|
|
|
|
|
|
|
|
|
|
4-Methoxyphenol |
150-76-5 |
|
5 |
|
|
|
|
|
|
|
Methyl acetate |
79-20-9 |
200 |
610 |
250 |
760 |
|
|
|
|
|
Methyl acetylene (Propyne) |
74-99-7 |
1000 |
1650 |
|
|
|
|
|
|
|
Methyl acetylene propadiene mixture (MAPP) |
|
1000 |
1800 |
1250 |
2250 |
|
|
|
|
table of contents
Table Z-1 - Page
12
print page 12
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Methyl acrylate |
96-33-3 |
10 |
35 |
|
|
|
|
X |
|
|
Methylacrylonitrile |
126-98-7 |
1 |
3 |
|
|
|
|
X |
|
|
Methylal (Dimethoxy-methane) |
109-87-5 |
1000 |
3100 |
|
|
|
|
|
|
|
Methyl alcohol |
67-56-1 |
200 |
260 |
250 |
325 |
|
|
X |
|
|
Methylamine |
74-89-5 |
10 |
12 |
|
|
|
|
|
|
|
Methyl amyl alcohol; see Methyl
Isobutyl carbinol |
|
|
|
|
|
|
|
|
|
|
Methyl n-amyl ketone |
110-43-0 |
100 |
465 |
|
|
|
|
|
|
|
Methyl bromide |
74-83-9 |
5 |
20 |
|
|
|
|
X |
|
|
Methyl butyl ketone; see 2-Hexanone |
|
|
|
|
|
|
|
|
|
|
Methyl cellosolve; (2-Methoxyethanol) |
109-86-4 |
25 |
80 |
|
|
|
|
X |
|
|
Methyl cellosolve acetate;
(2-Methoxyethyl acetate) |
110-49-6 |
25 |
120 |
|
|
|
|
X |
|
|
Methyl chloride |
74-87-3 |
50 |
105 |
100 |
210 |
|
|
|
|
|
Methyl chloroform
(1,1,1-Trichloroethane) |
71-55-6 |
350 |
1900 |
450 |
2450 |
|
|
|
|
|
Methyl 2-cyanoacrylate |
137-05-3 |
2 |
8 |
4 |
16 |
|
|
|
|
|
Methylcyclohexane |
108-87-2 |
400 |
1600 |
|
|
|
|
|
|
|
Methylcyclohexanol |
25639-42-3 |
50 |
235 |
|
|
|
|
|
|
|
o-Methylcyclohexanone |
583-60-8 |
50 |
230 |
75 |
345 |
|
|
X |
|
|
Methylcyclopentadienyl manganese
tricarbonyl (as Mn) |
12108-13-3 |
|
0.2 |
|
|
|
|
X |
|
|
Methyl demeton |
8022-00-2 |
|
0.5 |
|
|
|
|
X |
|
|
4,4’-Methylene bis (2-chloroaniline) (MBOCA) |
101-14-4 |
0.02 |
0.22 |
|
|
|
|
X |
|
|
Methylene bis (4-cyclohexylisocyanate) |
5124-30-1 |
|
|
|
|
0.01 |
0.11 |
X |
|
|
Methylene chloride |
75-09-2 |
Table Z-2 |
|
Table Z-2 |
|
Table Z-2 |
|
|
|
|
Methyl ethyl ketone peroxide (MEKP) |
1338-23-4 |
|
|
|
|
0.7 |
5 |
|
|
|
Methyl formate |
107-31-3 |
100 |
250 |
150 |
375 |
|
|
|
|
|
Methyl hydrazine (Monomethyl
hydrazine) |
60-34-4 |
|
|
|
|
0.2 |
0.35 |
X |
|
|
Methyl iodide |
74-88-4 |
2 |
10 |
|
|
|
|
X |
|
|
Methyl isoamyl ketone |
110-12-3 |
50 |
240 |
|
|
|
|
|
|
|
Methyl isobutyl carbinol |
108-11-2 |
25 |
100 |
40 |
165 |
|
|
X |
|
|
Methyl isobutyl ketone; see Hexone |
|
|
|
|
|
|
|
|
|
|
Methyl isocyanate |
624-83-9 |
0.02 |
0.05 |
|
|
|
|
X |
|
|
Methyl isopropyl ketone |
563-80-4 |
200 |
705 |
|
|
|
|
|
|
|
Methyl mercaptan |
74-93-1 |
0.5 |
1 |
|
|
|
|
|
|
|
Methyl methacrylate |
80-62-6 |
100 |
410 |
|
|
|
|
|
|
|
Methyl parathion |
298-00-0 |
|
0.2 |
|
|
|
|
X |
|
|
Methyl propyl ketone; see 2-Pentanone |
|
|
|
|
|
|
|
|
|
|
Methyl silicate |
681-84-5 |
1 |
6 |
|
|
|
|
|
|
|
alpha-Methyl styrene |
98-83-9 |
50 |
240 |
100 |
485 |
|
|
|
|
|
Methylene bisphenyl isocyanate (MDI) |
101-68-8 |
|
|
|
|
0.02 |
0.2 |
|
|
|
Metribuzin |
21087-64-9 |
|
5 |
|
|
|
|
|
|
|
Mica; see Silicates |
|
|
|
|
|
|
|
|
|
table of contents
Table Z-1 - Page
13
print page 13
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
| Molybdenum (as Mo) |
| |
Soluble
compounds |
| |
Insoluble
Compounds |
| |
Total dust |
|
7439-98-7 |
|
|
|
|
|
|
|
|
|
Monocrotophos (AzodrinR) |
6923-22-4 |
|
0.25 |
|
|
|
|
|
|
|
Monomethyl aniline |
100-61-8 |
0.5 |
2 |
|
|
|
|
X |
|
|
Morpholine |
110-91-8 |
20 |
70 |
30 |
105 |
|
|
X |
|
|
Naphtha (Coal tar) |
8030-30-6 |
100 |
400 |
|
|
|
|
|
|
|
Naphthalene |
91-20-3 |
10 |
50 |
15 |
75 |
|
|
|
|
|
alpha-Naphthylamine; see 1910.1004 |
134-32-7 |
|
|
|
|
|
|
|
|
|
beta-Naphthylamine; see 1910.1009 |
91-59-8 |
|
|
|
|
|
|
|
|
|
Nickel carbonyl (as Ni) |
13463-39-3 |
0.001 |
0.007 |
|
|
|
|
|
|
|
Nickel, metal and insoluble compounds
(as Ni) |
7440-02-0 |
|
1 |
|
|
|
|
|
|
|
Nickel, soluble compounds (as Ni) |
7440-02-0 |
|
0.1 |
|
|
|
|
|
|
|
Nicotine |
54-11-5 |
|
0.5 |
|
|
|
|
X |
|
|
Nitric acid |
7697-37-2 |
2 |
5 |
4 |
10 |
|
|
|
|
|
Nitric oxide |
10102-43-9 |
25 |
30 |
|
|
|
|
|
|
|
p-Nitroaniline |
100-01-6 |
|
3 |
|
|
|
|
X |
|
|
Nitrobenzene |
98-95-3 |
1 |
5 |
|
|
|
|
X |
|
|
p-Nitrochlorobenzene |
100-00-5 |
|
1 |
|
|
|
|
X |
|
|
4-Nitrodiphenyl; see 1910.1003 |
92-93-3 |
|
|
|
|
|
|
|
|
|
Nitroethane |
79-24-3 |
100 |
310 |
|
|
|
|
|
|
|
Nitrogen dioxide |
10102-44-0 |
|
|
1 |
1.8 |
|
|
|
|
|
Nitrogen trifluoride |
7783-54-2 |
10 |
29 |
|
|
|
|
|
|
|
Nitroglycerin |
55-63-0 |
|
|
|
0.1 |
|
|
X |
|
|
Nitromethane |
75-52-5 |
100 |
250 |
|
|
|
|
|
|
|
1-Nitropropane |
108-03-2 |
25 |
90 |
|
|
|
|
|
|
|
2-Nitropropane |
79-46-9 |
10 |
35 |
|
|
|
|
|
|
|
N-Nitrosodimethylamine; see 1910.1016 |
62-75-9 |
|
|
|
|
|
|
|
|
|
| Nitrotoluene |
| |
o-isomer |
| |
m-isomer |
| |
p-isomer |
|
|
2 |
11 |
|
|
|
|
X |
|
|
Nitrotrichloromethane; see
Chloropicrin |
|
|
|
|
|
|
|
|
|
|
Nonane |
111-84-2 |
200 |
1050 |
|
|
|
|
|
|
|
Octachloronaphthalene |
2234-13-1 |
|
0.1 |
|
0.3 |
|
|
X |
|
|
Octane |
111-65-9 |
300 |
1450 |
375 |
1800 |
|
|
|
|
|
Oil mist, mineral |
8012-95-1 |
|
5 |
|
|
|
|
|
|
|
Osmium tetroxide (as Os) |
20816-12-0 |
0.0002 |
0.002 |
0.0006 |
0.006 |
|
|
|
|
|
Oxalic acid |
144-62-7 |
|
1 |
|
2 |
|
|
|
|
|
Oxygen difluoride |
7783-41-7 |
|
|
|
|
0.05 |
0.1 |
|
|
|
Ozone |
10028-15-6 |
0.1 |
0.2 |
0.3 |
0.6 |
|
|
|
|
table of contents
Table Z-1 - Page
14
print page 14
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
STEL (c) |
Ceiling |
Skin Designation |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
ppm
(a) |
mg/m3
(b) |
|
|
Paraffin wax fume |
8002-74-2 |
|
2 |
|
|
|
|
|
|
|
Paraquat, respirable dust |
| |
1910-42-5 |
| |
4685-14-7 |
| |
2074-50-2 |
|
|
|
|
|
|
|
|
|
|
Parathion |
56-38-2 |
|
0.1 |
|
|
|
|
X |
|
|
|
Particulates not otherwise regulated |
| |
| Total dust |
| Respirable
fraction |
|
|
|
|
|
|
|
|
|
|
|
|
Pentaborane |
19624-22-7 |
0.005 |
0.01 |
0.015 |
0.03 |
|
|
|
|
|
Pentachloronaphthalene |
1321-64-8 |
|
0.5 |
|
|
|
|
X |
|
|
Pentachlorophenol |
87-86-5 |
|
0.5 |
|
|
|
|
X |
|
|
|
Pentaerythritol |
| |
| Total dust |
| Respirable
fraction |
|
|
115-77-5 |
|
|
|
|
|
|
|
|
|
Pentane |
109-66-0 |
600 |
1800 |
750 |
2250 |
|
|
|
|
|
2-Pentanone (Methyl propyl ketone) |
107-87-9 |
200 |
700 |
250 |
875 |
|
|
|
|
|
Perchloroethylene (Tetrachloroethylene) |
127-18-4 |
25 |
170 |
|
|
|
|
|
|
|
Perchloromethyl mercaptan |
594-42-3 |
0.1 |
0.8 |
|
|
|
|
|
|
|
Perchloryl fluoride |
7616-94-6 |
3 |
14 |
6 |
28 |
|
|
|
|
|
|
Perlite |
| |
| Total dust |
| Respirable
fraction |
|
|
|
|
|
|
|
|
|
|
|
|
Petroleum distillates (Naphtha) |
8002-05-9 |
400 |
1600 |
|
|
|
|
|
|
|
Phenol |
108-95-2 |
5 |
19 |
|
|
|
|
X |
|
|
Phenothiazine |
92-84-2 |
|
5 |
|
|
|
|
X |
|
|
p-Phenylene diamine |
106-50-3 |
|
0.1 |
|
|
|
|
X |
|
|
Phenyl ether, vapor |
101-84-8 |
1 |
7 |
|
|
|
|
|
|
|
Phenyl ether-biphenyl mixture, vapor |
|
1 |
7 |
|
|
|
|
|
|
|
Phenylethylene; see Styrene |
|
|
|
|
|
|
|
|
|
|
Phenyl glycidyl ether (PGE) |
122-60-1 |
1 |
6 |
|
|
|
|
|
|
|
Phenylhydrazine |
100-63-0 |
5 |
20 |
10 |
45 |
|
|
X |
|
|
Phenyl mercaptan |
108-98-5 |
0.5 |
2 |
|
|
|
|
|
|
|
Phenylphosphine |
638-21-1 |
|
|
|
|
0.05 |
0.25 |
|
|
|
Phorate |
298-02-2 |
|
0.05 |
|
0.2 |
|
|
X |
|
|
Phosdrin (MevinphosR) |
7786-34-7 |
0.01 |
0.1 |
0.03 |
0.3 |
|
|
X |
|
|
Phosgene (Carbonyl chloride) |
75-44-5 |
0.1 |
0.4 |
|
|
|
|
|
|
|
Phosphine |
7803-51-2 |
0.3 |
0.4 |
1 |
1 |
|
|
|
|
|
Phosphoric acid |
7664-38-2 |
|
1 |
|
3 |
|
|
|
|
|
Phosphorus (yellow) |
7723-14-0 |
|
0.1 |
|
|
|
|
|
|
|
Phosphorus oxychloride |
10025-87-3 |
0.1 |
0.6 |
|
|
|
|
|
|
|
Phosphorus pentachloride |
10026-13-8 |
|
1 |
|
|
|
|
|
|
|
Phosphorus pentasulfide |
1314-80-3 |
|
1 |
|
3 |
|
|
|
|
table of contents
Table Z-1 - Page
15
print page 15
(PDF,
12KB)
|
Substance |
CAS No.
(f) |
TWA |
| |
