PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Uranyl nitrate hexahydrate | 13520-83-7 | 2980 |
6.00
14.01
11.01
14.02
11.00
4.09
4.10
2.00
3.05
3.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| N2.O8.U.6(H2.O) | URANYL NITRATE, HEXAHYDRATE, SOLUTION, DINITRATODIOXOURANIUM HEXAHYDRATE, NITRATE D^URANYLE, HEXAHYDRATÉ, EN SOLUTION (DOT FRENCH), NITRATO DE URANILO, HEXAHIDRATADO, EN SOLUCIÓN (DOT SPANISH), URANIUM DIOXIDE DINITRATE, HEXAHYDRATE, URANIUM, BIS(NITRATO-O)DIOXO-, HEXAHYDRATE, (T-4)-, URANIUM, DINITRATODIOXO-, HEXAHYDRATE, URANYL DINITRATE HEXAHYDRATE, URANYL NITRATE HEXAHYDRATE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 502.14 | 6 | 60.2 | 118 | 2.807 @ 13°C |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.3 | 7.0 | 42 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.063 | 0.34 | 2.0 |
Technical Basis
A review of available sources identified acute toxicity data (LD50, LDLo) for several species and routes. In addition, 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. Toxicity data were selected according to type of exposure, species, and route based on 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 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-nitrate-hexahydrate and https://ibilabs.com/uranium-uranyl-thorium-compounds/uranyl-compounds/uranyl-nitarte-hexahydrate/
Uranium, soluble compounds, IDLH: https://www.cdc.gov/niosh/idlh/uranium.html
Uranium, soluble compounds exposure limits: https://www.osha.gov/chemicaldata/545