PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cobalt hydrocarbonyl | 16842-03-8 |
11.01
9.00
10.00
7.01
3.02
15.01
15.02
11.00
2.00
4.06
|
||||||||||
| Formula | Synonyms | |||||||||||
| H.Co.(C.O)4 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 171.98 | L/G unstble | -33 | 10 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.30 | 0.90 | 3.0 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.043 | 0.13 | 0.43 |
Technical Basis
A review of available sources identified exposure limits for cobalt hydrocarbonyl (ERPG-3 and ERPG-2, TLV-TWA, REL-TWA, and PEL-TWA) and numerous acute toxicity data. Data sources were selected according to the hierarchy listed in Table 3.1. The ERPG-3 was selected as the TEEL-3, the ERPG-2 was selected as the TEEL-2. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = 0.9 mg/m3 ERPG-2
• TEEL-3 = 3.0 mg/m3 ERPG-3
This review generated TEELs consistent with Rev. 29A.
• TEEL-1 = TLV-TWA (0.1 mg/m3) x 3
• TEEL-2 = 0.9 mg/m3 ERPG-2
• TEEL-3 = 3.0 mg/m3 ERPG-3
This review generated TEELs consistent with Rev. 29A.
References
Exposure limits (ERPG, TWAs). https://www.osha.gov/chemicaldata/294
https://pubchem.ncbi.nlm.nih.gov/compound/Cobalt-tetracarbonyl-hydride.