Thiophosgene

  • Thiocarbonyl chloride
  • Carbon chlorosulfide
  • Carbonothioic dichloride
Formula
CCl2S
Structure
Description
A reddish liquid.
Uses
Organic synthesis.

Registry Numbers and Inventories.
CAS
463-71-8
EC (EINECS/ELINCS)
207-341-6
EC Index Number
607-201-00-8
EC Class
Toxic; Harmful; Irritant
RTECS
XN2450000
RTECS class
Primary Irritant
UN (DOT)
2474
Beilstein/Gmelin
1633495
Beilstein Reference
4-03-00-00281
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
CCl2S
Formula mass
114.97
Boiling point, °C
73
Vapor pressure, mmHg
127 (25 C)
Vapor density (air=1)
4.0
Density
1.5085 g/cm3 (15 C)
Solubility in water
Slightly soluble
Surface tension
25 g/s2
Refractive index
1.54424
Partition coefficient, pKow
2.07
Heat of vaporization
30.1 kJ/mol
Heat of combustion
-8000 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C). Do not store in metal containers. Keep containers tightly closed. Store protected from moisture. Store under an inert atmosphere.
Handling
Wash thoroughly after handling. Ground and bond containers when transferring material. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Do not ingest or inhale. Handle under an inert atmosphere. Store protected from air. Wash clothing before reuse. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acids - bases - alcohols - amines - metals - moist air or water.
Decomposition
Hydrogen chloride, phosgene, oxides of sulfur, irritating and toxic fumes and gases.

Fire.
Flash Point,°C
-2
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use foam, dry chemical, or carbon dioxide. Cool all affected containers with flooding quantities of water. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. Use water spray to knock-down vapors.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas.
Combustion products
Toxic phosgene, hydrogen chloride, and sulfur dioxide may be generated in a fire.

Health.
Exposure effects
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
   Inhalation
Causes severe respiratory tract irritation with possible burns.
   Skin
Causes severe skin irritation and possible burns.
   Eyes
Causes severe eye irritation and possible burns.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
2474
Response guide
Hazard class
6.1
PRTC
T
Packing Group
II
 
USCG CHRIS Code
TPG
 
Std. Transport #
4923298