PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ammonium thiocyanate | 1762-95-4 | 3077 |
15.01
11.01
4.05
7.01
7.00
4.10
4.07
12.00
3.12
|
|||||||||
| Formula | Synonyms | |||||||||||
| CH4N2S | AMMONIUM THIOCYANATE, AMMONIUM ISOTHIOCYANATE, AMMONIUM RHODANATE, AMMONIUM RHODANIDE, AMMONIUM SULFOCYANATE, AMMONIUM SULFOCYANIDE, RHODANID, THIOCYANIC ACID, AMMONIUM SALT | |||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 76.13 | S del | 149.6 | 1.305 |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 15 | 25 | 150 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 4.8 | 8.0 | 48 |
Technical Basis
A review of available sources identified exposure limits (OEL-TWA) and acute toxicity data (TDLo, LD50) for several species and routes. Data sources were selected according to the hierarchy listed in Table 3.1. Toxicity data were selected according to type of exposure, species, and route according to the hierarchies stated in Sections 3.3.1, 3.3.2, and evaluated using factors in Tables 3.2, 3.3, and 3.4. The most preferred species and route, a rat oral LD50, was selected as the TEEL-3 basis. The human TDLo was considered as the TEEL-2; however, it resulted in a TEEL-2 > TEEL-3. Instead, the TEEL-2 value was derived according to Table 3.5. The OEL-TWA was selected as the TEEL-1 basis.
• TEEL-1 = OEL-TWA (Latvia, 5 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (750 mg/kg)
This review generated TEEL-3 and TEEL-2 values consistent with Rev. 29A. The Rev. 29A TEEL-1 was derived from the TEEL-2, while the current TEEL-1 basis is a 3 x TWA (Section 3.4.2).
• TEEL-1 = OEL-TWA (Latvia, 5 mg/m3) x 3
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (750 mg/kg)
This review generated TEEL-3 and TEEL-2 values consistent with Rev. 29A. The Rev. 29A TEEL-1 was derived from the TEEL-2, while the current TEEL-1 basis is a 3 x TWA (Section 3.4.2).
References
Chemical information: https://pubchem.ncbi.nlm.nih.gov/compound/Ammonium-thiocyanate.
OEL-TWA: https://ilv.ifa.dguv.de/limitvalues/2873
Rat oral LD50: Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases., 30(10)(51), 1986. Retrieved from: https://pubchem.ncbi.nlm.nih.gov/compound/Ammonium-thiocyanate.