LEAD CHROMATE‡
| CAS # | 7758-97-6 |
|---|---|
| Formula |
PbCrO₄ |
| Synonyms |
plumbous chromate; lead chromate (VI) |
| Physical description | Yellow or orange-yellow crystals or powder. | ||
|---|---|---|---|
| Boiling point | 482°F (decomposes) | Molecular weight | 323.2 |
| Freezing point/melting point | 1551°F | Vapor pressure | |
| Flash point | Vapor density | ||
| Specific gravity | 6.12 at 59°F | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 0689 [CHROMIUM VI COMPOUNDS (HEXAVALENT CHROMIUM)] and/or 1591 [LEAD] | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | |||
| Sampling time* | |||
| Sampling volume (TWA)* | |||
| Sampling flow rate (TWA)* | |||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | |||
| Method reference | |||
| Notes | See CHROMIUM VI COMPOUNDS (HEXAVALENT CHROMIUM) and/or LEAD |
||
| Special requirements |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
| Wipe Sampler/Sampling media | |
|---|---|
| Bulk Method |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
5 µg/m³ [2.5 µg/m³ Action Level] (as CrVI) |
REL-TWA |
0.0002 mg/m³ (8 hr TWA) |
TLV-TWA |
0.0002 mg/m³ (inhalable particulate matter) [2017] |
PEL-TWA |
0.005 mg/m³ (as Cr) |
| PEL-STEL | REL-STEL | TLV-STEL |
0.0005 mg/m³ (inhalable particulate matter) [2017] |
PEL-STEL | |||
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
|
Notes:
OSHA's chromium (VI) standard applies to all occupational exposures to any chromium species with a valence of positive six, regardless of form or compound, including chromates and chromic acid. See 29 CFR 1910.1026, Chromium (VI). See LEAD for information regarding lead exposure. |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens and Appendix C, Supplementary Exposure Limits. |
Notes:
dermal sensitization (DSEN), respiratory sensitization (RSEN), BEI® |
Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH | ||||||
| Carcinogenic classifications: IARC-2A, NIOSH-Ca, NTP-K, TLV-A1, EPA-A | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Lead chromate NIOSH: Pocket Guide to Chemical Hazards - Chromic acid and chromates Literature References
|
Last Updated Date : 01/04/2021