PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ammonium sulfite | 10196-04-0 | 9090 |
15.01
11.01
4.07
7.01
|
|||||||||
| Formula | Synonyms | |||||||||||
| H8N2O3S | AMMONIUM SULFITE, AMMONIUM SULPHITE, DIAMMONIUM SULFITE, DIAMMONIUM SULFONATE, SULFITE D^AMMONIUM (DOT FRENCH), SULFITO DE AMONIO (DOT SPANISH) | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 116.14 | S | 1.41 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 30 | 330 | 2000 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 6.3 | 69 | 420 |
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for ammonium sulfite. Reported GHS health hazard ratings (H314, H315, H319, H335, Category 1-3) indicate a high to mid-level health hazard, approximately equivalent to an HHR between 2 and 3. However, this chemical does not meet GHS hazard criteria in 68% of surveyed reports. 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.
• 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 that are 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 that are consistent with Rev. 29A*.
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Ammonium-Sulfite
PNOR/PNOS TLV-TWA: https://www.osha.gov/chemicaldata/801