Acetyl isothiocyanate

  • Acetic acid, anhydride with isothiocyanic acid
Formula
C3H3NOS
Structure

Registry Numbers and Inventories.
CAS
13250-46-9
UN (DOT)
2810
Beilstein/Gmelin
635801
Beilstein Reference
3-03-00-00278

Properties.
Formula
C3H3NOS
Formula mass
101.13
Boiling point, °C
132.5
Vapor pressure, mmHg
8.8 (25 C)
Density
1.151 g/mL (20 C)
Solubility in water
Soluble
Refractive index
1.5231 (18<sup>o</sup>C)
Heat of vaporization
37.0 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place. Unsuitable: Do not allow water to enter container. Store at 2-8 C
Protection
Compatible chemical-resistant gloves.
Respirators
Government approved respirator.
Small spills/leaks
Absorb on sand or vermiculite and place in closed containers for disposal. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures. Do not allow water to enter container because of violent reaction.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, Carbon dioxide, Nitrogen oxides, Sulfur oxides, Hydrogen cyanide.

Fire.
Flash Point,°C
34
Fire fighting
Extinguish using Carbon dioxide, dry chemical powder, or appropriate foam. Unsuitable: Do not use water. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Emits toxic fumes under fire conditions. Water reactive material.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
2
 

Health.
Exposure effects
Toxic. Reacts violently with water. Toxic by inhalation, in contact with skin and if swallowed. Irritating to eyes, respiratory system and skin. May cause sensitization by inhalation.
   Ingestion
Toxic if swallowed.
   Inhalation
Toxic if inhaled. Material is irritating to mucous membranes and upper respiratory tract.
   Skin
Causes skin irritation. Toxic if absorbed through skin.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of skin contact, flush with copious amounts of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.
UN number
2810
Response guide
Hazard class
6.1
Packing Group
II