1-(2-Chlorophenyl)-2-thiourea
- CAS NO.：5344-82-1
- Empirical Formula: C7H7ClN2S
- Molecular Weight: 186.66
- MDL number: MFCD00004934
- EINECS: 226-291-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-08-28 09:47:25
What is 1-(2-Chlorophenyl)-2-thiourea?
Chemical properties
white crystals or powder
General Description
Needles or plates. Used as an herbicide. Not registered as a pesticide in the U.S.
Reactivity Profile
When heated to decomposition 1-(2-Chlorophenyl)-2-thiourea emits very toxic fumes of chlorides, nitrogen oxides, and sulfur oxides. [EPA, 1998]. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid.
Health Hazard
High oral toxicity.
Fire Hazard
When heated to decomposition 1-(2-Chlorophenyl)-2-thiourea emits very toxic fumes of chlorides, nitrogen oxides, and sulfur oxides.
Properties of 1-(2-Chlorophenyl)-2-thiourea
| Melting point: | 144-149 °C |
| Boiling point: | 250°C (rough estimate) |
| Density | 1.4179 (rough estimate) |
| refractive index | 1.6100 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| pka | 12.34±0.70(Predicted) |
| BRN | 776946 |
| CAS DataBase Reference | 5344-82-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Thiourea, (2-chlorophenyl)-(5344-82-1) |
| EPA Substance Registry System | 1-(o-Chlorophenyl)thiourea (5344-82-1) |
Safety information for 1-(2-Chlorophenyl)-2-thiourea
| Signal word | Danger |
| Pictogram(s) |
 Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H300:Acute toxicity,oral |
| Precautionary Statement Codes |
P330:Rinse mouth. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P302+P350:IF ON SKIN: Gently wash with plenty of soap and water. |
Computed Descriptors for 1-(2-Chlorophenyl)-2-thiourea
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