PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gallium | 7440-55-3 | 2803 |
14.01
11.01
14.02
7.01
11.00
4.09
4.04
4.07
10.00
3.09
|
|||||||||
| Formula | Synonyms | |||||||||||
| Ga | GALLIUM, GALIO (DOT SPANISH), GALLIUM (DOT FRENCH), GALLIUM ELEMENT | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 69.72 | S | 29.78 | 2204 | 5.904 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 30 | 330 | 2000 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 11 | 120 | 700 |
Technical Basis
A review of available sources did not identify exposure limits, acute toxicity data, or GHS health hazard ratings for gallium. Reported GHS health hazard ratings (H302, oral Category 4; H314, skin corrosion Category 1) indicate a low to high-level health hazard, approximately equivalent to an HHR=3 between HHR=1 (TEEL-3=79 mg/m3 and 7900 mg/m3, respectively). Considering this, the PNOS TLV-TWA was selected as the TEEL-1 basis (PNOS, Section 3.5.2). TEEL-3 and TEEL-2 values were derived according to Table 3.5, resulting in a TEEL-3 value within the range indicated by GHS health hazards.
• PAC-1 = TEEL-1 = TLV-TWA (PNOS, 10 mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values consistent with Rev. 29A*.
• PAC-1 = TEEL-1 = TLV-TWA (PNOS, 10 mg/m3) x 3
• PAC-2 = TEEL-2 = TEEL-1 x 11
• PAC-3 = TEEL-3 = TEEL-2 x 6
This review generated PAC values consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Gallium