PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Uranyl fluoride; (Uranium oxyfluoride) | 13536-84-0 |
15.01
11.01
4.01
4.07
4.08
4.05
11.00
8.00
3.09
4.11
|
||||||||||
| Formula | Synonyms | |||||||||||
| U.O2.F2 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 308 | S | 6.37 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.78 | 4.3 | 26 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.062 | 0.34 | 2.1 |
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for uranyl fluoride. Instead, analysts evaluated soluble uranium exposure limits (U, CASRN: 7440-61-1, IDLH, STEL, TWAs) for TEEL development. Data sources were selected according to the hierarchy listed in Table 3.1. The 1990 and 1994 IDLH were evaluated; the 1990 IDLH is based on acute toxicity data, while the 1994 IDLH includes chronic toxicity data. Considering this, the 1990 IDLH was selected as the TEEL-3 basis (Table 3.1) and a compound adjustment factor was applied (Section 3.2.2). TEEL-2 value was derived according to Table 3.5. The TLV-STEL was selected as the TEEL-1 basis and a compound adjustment factor was applied (Section 3.2.2).
• PAC-1 = TEEL-1 = MW-adjusted TLV-STEL (soluble uranium compounds, CASRN: 7440-61-1, 1990, 0.6 mg/m3)
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = MW-adjusted IDLH (1990, soluble uranium compounds, CASRN: 7440-61-1; 20 mg/m3)
This review generated PAC values consistent with Rev. 29A*.
• PAC-1 = TEEL-1 = MW-adjusted TLV-STEL (soluble uranium compounds, CASRN: 7440-61-1, 1990, 0.6 mg/m3)
• PAC-2 = TEEL-2 = TEEL-3/6
• PAC-3 = TEEL-3 = MW-adjusted IDLH (1990, soluble uranium compounds, CASRN: 7440-61-1; 20 mg/m3)
This review generated PAC values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Uranyl-fluoride
Uranium, soluble compounds, IDLH: https://www.cdc.gov/niosh/idlh/uranium.html
Uranium, soluble compounds exposure limits: https://www.osha.gov/chemicaldata/545