Code of Federal Regulations/Title 29/Chapter XVII/Part 1910/Subpart Z/Section 1910.1000/Table Z-2
< Code of Federal Regulations | Title 29 | Chapter XVII | Part 1910 | Subpart Z | Section 1910.1000
| Substance | 8-hour time weighted average | Acceptable ceiling concentration | Acceptable maximum peak above the acceptable ceiling concentration for an 8-hr shift | |
|---|---|---|---|---|
| Concentration | Maximum duration | |||
| Benzene a (Z37.40–1969) | 10 ppm | 25 ppm | 50 ppm | 10 minutes |
| Beryllium and beryllium compounds (Z37.29–1970) | 2 μg/m³ | 5 μg/m³ | 25 μg/m³ | 30 minutes |
| Cadmium fume b (Z37.5–1970) | 0.1 mg/m³ | 0.3 mg/m³ | ||
| Cadmium dust b (Z37.5–1970) | 0.2 mg/m³ | 0.6 mg/m³ | ||
| Carbon disulfide (Z37.3–1968) | 20 ppm | 30 ppm | 100 ppm | 30 minutes |
| Carbon tetrachloride (Z37.17–1967) | 10 ppm | 25 ppm | 200 ppm | 5 min. in any 4 hrs. |
| Chromic acid and chromates (Z37.7–1971) (as CrO3) c | — | 1 mg/10 m³ | ||
| Ethylene dibromide (Z37.31–1970) | 20 ppm | 30 ppm | 50 ppm | 5 minutes |
| Ethylene dichloride (Z37.21–1969) | 50 ppm | 100 ppm | 200 ppm | 5 min. in any 3 hrs. |
| Fluoride as dust (Z37.28–1969) | 2.5 mg/m³ | |||
| Formaldehyde; see 1910.1048 | ||||
| Hydrogen fluoride (Z37.28–1969) | 3 ppm | |||
| Hydrogen sulfide (Z37.2–1966) | — | 20 ppm | 50 ppm | 10 mins. once, only if no other meas. exp. occurs. |
| Mercury (Z37.8–1971) | — | 1 mg/10 m³ | ||
| Methyl chloride (Z37.18–1969) | 100 ppm | 200 ppm | 300 ppm | 5 mins. in any 3 hrs |
| Methylene chloride: See [[/../../Section 1910.1052|Sec. 1919.52]] | ||||
| Organo (alkyl) mercury (Z37.30–1969) | 0.01 mg/m³ | 0.04 mg/m³ | ||
| Styrene (Z37.15–1969) | 100 ppm | 200 ppm | 600 ppm | 5 mins. in any 3 hrs. |
| Tetrachloroethylene (Z37.22–1967) | 100 ppm | 200 ppm | 300 ppm | 5 mins. in any 3 hrs. |
| Toluene (Z37.12–1967) | 200 ppm | 300 ppm | 500 ppm | 10 minutes |
| Trichloroethylene (Z37.19–1967) | 100 ppm | 200 ppm | 300 ppm | 5 mins. in any 2 hrs. |
Notes edit
a. This standard applies to the industry segments exempt from the 1 ppm 8-hour TWA and 5 ppm STEL of the benzene standard at 1910.1028.
b. This standard applies to any operations or sectors for which the Cadmium standard, 1910.1027, is stayed or otherwise not in effect.
c. This standard applies to any operations or sectors for which the exposure limit in the Chromium(VI) standard, § 1910.1026, is stayed or is otherwise not in effect.