PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Uranium hydride; (Uranium(III) hydride) | 13598-56-6 |
18.00
4.09
2.00
10.00
3.09
3.04
|
||||||||||
| Formula | Synonyms | |||||||||||
| H3U | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 241.05 | S | 11.1 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.61 | 5 | 30 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.062 | 0.51 | 3.0 |
Technical Basis
A review of available sources identified the following: IDLH and TLV-TWA data for insoluble uranium compounds, as U. Data sources were selected according to the hierarchy listed in Table 3.1. A Compound Adjustment Factor was applied to TEEL-1 and TEEL-3 calculations as there were no available data sources for uranium(III) hydride. The IDLH (1990) CAF-adjusted uranium value was selected as the TEEL-3. A TEEL-2 was derived according to Table 3.5. The CAF-adjusted TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA x 3 x CAF
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH (1990) x CAF
This review generated TEEL values that are consistent with those in Rev 29A.
• TEEL-1 = TLV-TWA x 3 x CAF
• TEEL-2 = TEEL-3/6
• TEEL-3 = IDLH (1990) x CAF
This review generated TEEL values that are consistent with those in Rev 29A.
References
https://www.cdc.gov/niosh/idlh/7440611.html