INTOX Home Page
THIONYL CHLORIDE ICSC: 1409
Date of Peer Review: October 2001

Sulfurous oxychloride
Sulfurous dichloride
Sulfinyl chloride
Sulfur chloride oxide
Thionyl dichloride
CAS # 7719-09-7 SOCl2
RTECS # XM5150000 Molecular mass: 118.97
UN # 1836
EC # 016-015-00-0
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Not combustible. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.
NO contact with water.
In case of fire in the surroundings: carbon dioxide, powder. NO water.
EXPLOSION

In case of fire: cool drums, etc., by spraying with water but avoid contact of the substance with water.
EXPOSURE
PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing. Symptoms may be delayed (see Notes).
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin Pain. Redness. Serious skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Pain. Redness. Severe deep burns.
Face shield, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Burning sensation. Abdominal pain. Shock or collapse.
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. (Extra personal protection: complete protective clothing including self-contained breathing apparatus).
Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
EU Classification
Symbol: C
R: 14-20/22-29-35
S: (1/2-)-26-36/37/39-45
UN Classification
UN Hazard Class: 8
UN Pack Group: I
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-80S1836;
NFPA Code: H4; F0; R2; W
Ventilation along the floor. Separated from food and feedstuffs. See Chemical Dangers. Dry. Well closed.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

SEE IMPORTANT INFORMATION ON BACK


THIONYL CHLORIDE ICSC: 1409
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW OR REDDISH, FUMING LIQUID, WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air.

CHEMICAL DANGERS:
The substance decomposes on heating above 140C producing toxic and corrosive fumes. Reacts violently with water to produce toxic fumes of sulfur dioxide and hydrogen chloride. Reacts with many substances such as combustible substances, amines, bases and metals, causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 1 ppm (Ceiling value) (ACGIH 2001).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is very corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of the substance may cause lung oedema (see Notes). The substance may cause effects on the lungs, resulting in inflammation and blockage of the airways. Exposure far above the OEL may result in death. The effects may be delayed. Medical observation is indicated.

PHYSICAL PROPERTIES
Boiling point: 76C
Melting point: -104.5C
Relative density (water = 1): 1.64
Solubility in water: reaction
Vapour pressure, kPa at 25C: 16
Relative vapour density (air = 1): 4.1
Relative density of the vapour/air-mixture at 20C (air = 1): 1.49
ENVIRONMENTAL DATA

NOTES
The occupational exposure limit value should not be exceeded during any part of the working exposure. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation is therefore essential.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999