Ethyl isothiocyanate
Synonym(s):Ethyl mustard oil
- CAS NO.：542-85-8
- Empirical Formula: C3H5NS
- Molecular Weight: 87.14
- MDL number: MFCD00004820
- EINECS: 208-831-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-09-25 17:15:13
What is Ethyl isothiocyanate?
Chemical properties
clear colorless to slightly yellow liquid
Chemical properties
Colorless liquid; sharp, mustard-like aroma.
Occurrence
Reported found in horseradish
The Uses of Ethyl isothiocyanate
Military poison gas.
The Uses of Ethyl isothiocyanate
It is used as a pharmaceutical intermediate.
Definition
ChEBI: An isothiocyanate having an ethyl group attached to the nitrogen.
Aroma threshold values
High strength odor, recommend smelling in a 0.01% solution or less
Properties of Ethyl isothiocyanate
| Melting point: | -6 °C |
| Boiling point: | 130-132 °C(lit.) |
| Density | 0.995 g/mL at 25 °C(lit.) |
| vapor pressure | 15.199hPa at 25℃ |
| refractive index | n |
| FEMA | 4420 | ETHYL ISOTHIOCYANATE |
| Flash point: | 90 °F |
| storage temp. | Keep in dark place,Inert atmosphere,2-8°C |
| solubility | Chloroform (Sparingly), Ethyl Acetate (Soluble) |
| form | Liquid |
| color | Clear colorless to slightly yellow |
| Specific Gravity | 0.995 |
| PH | 6.3 (H2O, 20℃) |
| Odor | at 0.01 % in propylene glycol. pungent mustard garlic |
| Water Solubility | Reacts with water. Soluble in chlorinated and aromatic hydrocarbons. Miscible in ethanol and ether. |
| Sensitive | Moisture Sensitive |
| Merck | 14,3815 |
| JECFA Number | 1885 |
| BRN | 1737705 |
| Dielectric constant | 19.7（20℃） |
| Stability: | Air Sensitive, Hygroscopic, Moisture Sensitive, Volatile |
| CAS DataBase Reference | 542-85-8(CAS DataBase Reference) |
| EPA Substance Registry System | Ethane, isothiocyanato- (542-85-8) |
Safety information for Ethyl isothiocyanate
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H226:Flammable liquids H314:Skin corrosion/irritation H334:Sensitisation, respiratory H400:Hazardous to the aquatic environment, acute hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Ethyl isothiocyanate
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