PAC Database - Detailed Chemical Data

Chemical Identity
Chemical CAS# UN# Health Code Numbers
Cobalt sulfate 10124-43-3
15.01
11.01
15.02
4.08
7.01
11.00
4.06
4.07
8.00
4.09
Formula Synonyms
CoO4S COBALT SULFATE, BIEBERITE, COBALT(II) SULFATE, COBALTOUS SULFATE HEPTAHYDRATE
Physical Properties
Mol Wt State MP (°C) BP (°C) VP (Hg) VP (°C) SG LEL (ppm)
154.99 S 735 3.71
PAC Values
PAC Values (Original Units: mg/m3)
PAC-1 PAC-2 PAC-3
0.060 14 84
Converted PAC Values (ppm)
PAC-1 PAC-2 PAC-3
0.0095 2.2 13
Technical Basis
A review of available sources identified exposure limits (OEL-TWAs) and acute toxicity data (LD50) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. The most preferred species and route toxicity data, a rat oral LD50, was selected as the TEEL-3 basis. The TEEL-2 value was derived according to Table 3.5. The OEL-TWA was selected as the TEEL-1.
• TEEL-1 = OEL-TWA (Sweden, 0.02 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (424 mg/kg)
This review generated TEEL-3 and TEEL-2 values consistent with Rev. 29A and TEEL-1 inconsistent with Rev. 29A. The Rev. 29A TEEL-1 was a MW-adjusted TLV-TWA for cobalt compounds, while the current TEEL-1 basis is an OEL-TWA for cobalt sulfate.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Cobalt-Sulfate
Rat LD50. Sheftel, V.O.; Indirect Food Additives and Polymers. Migration and Toxicology. Lewis Publishers, Boca Raton, FL. 2000., p. 463. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Cobalt-Sulfate
OEL-TWAs: https://ilv.ifa.dguv.de/limitvalues/14454
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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.