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BENZENESULFONIC ACID ICSC: 1626
Date of Peer Review: October 2005

Benzenemonosulfonic acid
Phenylsulfonic acid
CAS # 98-11-3 C6H6O3S
RTECS # DB4200000 Molecular mass: 158.2
UN # 2585
EC Index #
TYPES OF HAZARD / EXPOSURE ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames.
Powder, alcohol-resistant foam, water in large amounts, carbon dioxide.
EXPLOSION


EXPOSURE
STRICT HYGIENE!

Inhalation Cough. Sore throat. Shortness of breath. Laboured breathing. Burning sensation. Headache. Nausea.
Ventilation (not if powder), local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin Redness. Burning sensation. Pain. Skin burns.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
Eyes Redness. Pain. Severe deep burns.
Face shield and 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 Sore throat. Burning sensation in the throat and chest. Abdominal pain. Shock or collapse.
Do not eat, drink, or smoke during work.
Rinse mouth. Give plenty of water to drink. Do NOT induce vomiting. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Use face shield. Chemical protection suit. Sweep spilled substance into plastic containers. Wash away remainder with plenty of water.
Do not transport with food and feedstuffs.
EU Classification
UN Classification
UN Hazard Class: 8
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-80GC4-II+III
Separated from oxidants, bases, metals, food and feedstuffs Dry. Well closed. Ventilation along the floor.
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 2005

SEE IMPORTANT INFORMATION ON BACK
BENZENESULFONIC ACID ICSC: 1626
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
GREY TO YELLOW HYGROSCOPIC CRYSTALS OR FLAKES, WITH PUNGENT ODOUR.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes. The solution in water is a strong acid, it reacts violently with bases and is corrosive. Reacts violently with oxidants. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001).

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established. MAK not established.
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation and by ingestion.

INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly on spraying.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion.

PHYSICAL PROPERTIES
Boiling point: 190C
Melting point: 51C
Relative density (water = 1): 1.3 (at 47C)
Solubility in water, g/100 ml at 20C: 93
Relative vapour density (air = 1): 5.5
Flash point: 113C
Octanol/water partition coefficient as log Pow: -1.2
ENVIRONMENTAL DATA

NOTES

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 2005