PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diammonium sulfide; (Ammonium sulfide) | 12135-76-1 | 2683 |
14.01
4.01
11.01
4.08
4.05
7.01
8.00
11.00
4.09
4.07
|
|||||||||
| Formula | Synonyms | |||||||||||
| H8N2S | AMMONIUM SULFIDE, SOLUTION, AMMONIUM HYDROGEN SULFIDE SOLUTION, AMMONIUM MONOSULFIDE, AMMONIUM SULFHYDRATE SOLUTION, AMMONIUM SULFIDE, AMMONIUM SULFIDE SOLUTION, AMMONIUM SULPHIDE, SOLUTION, DIAMMONIUM SULFIDE, SULFURE D^AMMONIUM, EN SOLUTION (DOT FRENCH), SULFURO DE AMONIO, EN SOLUCIÓN (DOT SPANISH), TRUE AMMONIUM SULFIDE | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 68.14 | L | 104 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 0.51 | 27 | 50 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.4 | 75 | 140 |
Technical Basis
A review of available sources did not identify exposure limits or acute toxicity data for diammonium sulfide. Excerpts of human toxicity effects for ammonium sulfide reported the follow effects: diammonium sulfide 1) “may be absorbed via the skin and cause hydrogen sulfide poisoning”, 2) “causes severe burns of eyes” and 3) may “decomp to hydrogen sulfide in stomach with subsequent systemic poisoning.” As such, analysts evaluated available exposure limits for hydrogen sulfide (AEGLs, CASRN: 7783-06-4). The AEGLs were selected due to their priority among Protective Action Criteria (Section 1).
• PAC-1 = AEGL-1 (hydrogen sulfide, CASRN: 7783-06-4)
• PAC-2 = AEGL-2 (hydrogen sulfide, CASRN: 7783-06-4)
• PAC-3 = AEGL-3 (hydrogen sulfide, CASRN: 7783-06-4)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A and current sources are consistent, the hydrogen sulfide AEGLs (CASRN: 7783-06-4); however, the Rev. 29A TEELs were molecular weight adjusted; per Section 3.2.2, AEGLs may not be weight adjusted. Accordingly, current ppm values are unmodified, resulting in different values.
• PAC-1 = AEGL-1 (hydrogen sulfide, CASRN: 7783-06-4)
• PAC-2 = AEGL-2 (hydrogen sulfide, CASRN: 7783-06-4)
• PAC-3 = AEGL-3 (hydrogen sulfide, CASRN: 7783-06-4)
This review generated PAC values inconsistent with Rev. 29A. The Rev. 29A and current sources are consistent, the hydrogen sulfide AEGLs (CASRN: 7783-06-4); however, the Rev. 29A TEELs were molecular weight adjusted; per Section 3.2.2, AEGLs may not be weight adjusted. Accordingly, current ppm values are unmodified, resulting in different values.
References
Chemical information. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Diammonium-sulfide
Human toxicity effects: https://pubchem.ncbi.nlm.nih.gov/compound/Diammonium-sulfide#section=Human-Toxicity-Excerpts&fullscreen=true
AEGL (Hydrogen sulfide, CASRN: 7783-06-4). Retrieved from: https://www.epa.gov/aegl/hydrogen-sulfide-results-aegl-program