PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beryllium | 7440-41-7 | 1567 |
15.01
4.01
11.01
4.08
11.00
4.09
4.07
2.00
10.00
9.00
|
|||||||||
| Formula | Synonyms | |||||||||||
| Be | BERYLLIUM POWDER, BERILIO, EN POLVO (DOT SPANISH), BERYLLIUM, BERYLLIUM ATOM, BERYLLIUM ELEMENT, BÉRYLLIUM EN POUDRE (DOT FRENCH), BERYLLIUM METAL: BERYLLIUM, BERYLLIUM-9, GLUCINIUM | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 9.01 | S | 1287 | 2471 | 10 | 1860 | 1.85 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.00015 | 0.025 | 0.1 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.00041 | 0.068 | 0.27 |
Technical Basis
A review of available sources identified the following exposure limits: TWAs (PEL, TLV), and ERPGs (ERPG-2 and ERPG-3 only). Data sources were selected according to the hierarchy listed in Table 3.1. The ERPG-2 and ERPG-3 were selected as the TEEL-2 and TEEL-3, respectively. The TLV-TWA was selected as the TEEL-1 basis.
• TEEL-1 = TLV-TWA (0.00005 mg/m3) x 3
• TEEL-2 = ERPG-2 (0.025 mg/m3)
• TEEL-3 = ERPG-3 (0.1 mg/m3)
This review generated TEEL-3 and TEEL-2 values consistent with Rev. 29A. The Rev. 29A TEEL-1 was derived from the TEEL-2 (Table 3.5), while the current TEEL-1 basis is an TLV-TWA exposure limit.
• TEEL-1 = TLV-TWA (0.00005 mg/m3) x 3
• TEEL-2 = ERPG-2 (0.025 mg/m3)
• TEEL-3 = ERPG-3 (0.1 mg/m3)
This review generated TEEL-3 and TEEL-2 values consistent with Rev. 29A. The Rev. 29A TEEL-1 was derived from the TEEL-2 (Table 3.5), while the current TEEL-1 basis is an TLV-TWA exposure limit.
References
Exposure limits: https://www.osha.gov/chemicaldata/531
TLV-TWA. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Beryllium
ERPG: https://cameochemicals.noaa.gov/chemical/238