PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Barium sulfate | 7727-43-7 | 1564 |
15.01
4.01
11.01
4.08
11.00
4.06
10.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| BaSO4 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 233.39 | S crystals | 1580 | 4.49 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 15 | 170 | 990 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.6 | 18 | 100 |
Technical Basis
A review of available sources identified the following: a TLV-TWA and limited acute animal toxicity (mouse, rat). 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 rat oral D50 was selected as the TEEL-3 basis. A TEEL-2 was derived according to Table 3.5. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA x 3 (5 mg/m3)
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (>5000 mg/kg)
This review generated TEEL values consistent with those in Rev. 29A.
• TEEL-1 = TLV-TWA x 3 (5 mg/m3)
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (>5000 mg/kg)
This review generated TEEL values consistent with those in Rev. 29A.
References
https://www.osha.gov/chemicaldata/635
https://echa.europa.eu/de/registration-dossier/-/registered-dossier/15235/7/3/2
https://pubchem.ncbi.nlm.nih.gov/compound/Barium-Sulfate.