PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Antimony hydroxide | 39349-74-1 |
15.01
11.01
4.08
4.09
4.06
4.10
4.07
3.08
2.00
10.00
|
||||||||||
| Formula | Synonyms | |||||||||||
| Sb.(OH)3 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 172.7719 | S |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 2.1 | 19 | 110 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.30 | 2.7 | 16 |
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for antimony hydroxide. Instead, analysts identified exposure limits for antimony (Sb, CASRN: 7440-36-0, IDLH, TWAs). Data sources were selected according to the hierarchy listed in Table 3.1. The IDLH was selected as the TEEL-3. The TLV-TWA was selected as the TEEL-1 basis. A compound adjustment factor was applied to these exposure limits (Section 3.2.2). The TEEL-2 value was derived according to Table 3.
• TEEL-1 = MW-adjusted TLV-TWA (antimony, CASRN: 7440-36-0, 0.5 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = MW-adjusted IDLH (1990, antimony, CASRN: 7440-36-0, 80 mg/m3)
This review generated TEEL-1 and TEEL-3 values consistent with Rev. 29A. The Rev. 29A and current TEEL-2 use the same methodology; minor differences may be due to rounding.
• TEEL-1 = MW-adjusted TLV-TWA (antimony, CASRN: 7440-36-0, 0.5 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = MW-adjusted IDLH (1990, antimony, CASRN: 7440-36-0, 80 mg/m3)
This review generated TEEL-1 and TEEL-3 values consistent with Rev. 29A. The Rev. 29A and current TEEL-2 use the same methodology; minor differences may be due to rounding.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Antimony-hydroxide
Antimony exposure limits: https://www.osha.gov/chemicaldata/526
Antimony IDLH and TLV-TWA: https://www.cdc.gov/niosh/idlh/7440360.html