International Chemical Safety Cards

CHLOROSULFONIC ACID

ICSC: 1039

Sulfuric chlorohydrin
Chlorosulfuric acid
ClHO₃S / SO₂(OH)Cl
Molecular mass: 116.52

ICSC #    1039
CAS #     7790-94-5
RTECS # FX5730000
UN #        1754
EC #         016-017-00-1
October 16, 2001 Peer reviewed

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. Gives off irritating or toxic fumes (or gases) in a fire.	NO contact with alcohol, combustibles, reducing agents and water.	In case of fire in the surroundings: powder, carbon dioxide NO water .
EXPLOSION	Risk of fire and explosion on contact with many substances.		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. Nausea. Shock or collapse.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Ventilation. Collect leaking and spilled liquid in sealable containers as far as possible. Cautiously neutralize remainder with alkaline materials such as lime, crushed limestone, sodium bicarbonate, or soda ash. Then wash away with plenty of water. Do NOT absorb in saw-dust or other combustible absorbents. (Extra personal protection: complete protective clothing including self-contained breathing apparatus.)

Separated from food and feedstuffs . See Chemical Dangers. Dry. Well closed.

Unbreakable packaging; put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs.
C symbol
R: 14-35-37
S: 1/2-26-45
UN Hazard Class: 8
UN Packing Group: I

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1039

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

CHLOROSULFONIC ACID

ICSC: 1039

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PHYSICAL STATE; APPEARANCE:
COLOURLESS TO YELLOW LIQUID , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
The substance decomposes on heating on contact with water producing toxic and corrosive fumes . The substance is a strong oxidant and reacts violently with combustible and reducing materials. The substance is a strong acid, it reacts violently with bases and is corrosive. Reacts violently withalcoholspowdered metals, phosphorus, nitrates and many other substances causing fire and explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour and by ingestion.

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

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 vapour may cause lung oedema (see Notes). The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure. The substance may have effects on the teeth , resulting in erosion.

PHYSICAL
PROPERTIES

Boiling point at 100kPa: 151-152°C
Melting point: -80°C
Relative density (water = 1): 1.75

Solubility in water: reaction
Vapour pressure, Pa at 20°C: 133
Relative vapour density (air = 1): 4.02

ENVIRONMENTAL
DATA

N O T E S

Reacts violently with fire extinguishing agents such as water. 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. Depending on the degree of exposure, periodic medical examination is suggested.

Transport Emergency Card: TEC (R)-80G10a
;
NFPA Code: H4; F0; R2; W, OX

ADDITIONAL INFORMATION

ICSC: 1039	CHLOROSULFONIC ACID
(C) IPCS, CEC, 1994

IMPORTANT LEGAL NOTICE:

Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.