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BENZENESULFONIC ACID
ICSC: 1626
Peer-Review Status: 18.10.2005 Validated
Benzenemonosulfonic acid
Phenylsulfonic acid 
CAS #: 98-11-3 RTECS #: DB4200000
UN #: 2585
EINECS #: 202-638-7
    Formula: C6H6O3S
Molecular mass: 158.2

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.  Use water in large amounts, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION      
 
EXPOSURE   STRICT HYGIENE!   
Inhalation Cough. Sore throat. Shortness of breath. Laboured breathing. Burning sensation. Headache. Nausea.  Use 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.  Wear 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 refer for medical attention. 
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 one or two glasses of water to drink. Do NOT induce vomiting. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: face shield, chemical protection suit and particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered plastic containers. Wash away remainder with plenty of water.  Do not transport with food and feedstuffs. 
EC Classification
 
UN Classification
UN Hazard Class: 8; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-80GC4-II+III.  Separated from oxidants, bases, metals and food and feedstuffs. Dry. Well closed. Ventilation along the floor. 

IMPORTANT DATA
Physical State; Appearance
GREY-TO-YELLOW HYGROSCOPIC CRYSTALS OR FLAKES WITH PUNGENT ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces 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. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Occupational exposure limits
TLV (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, skin and respiratory tract. Corrosive on ingestion. 

Effects of long-term or repeated exposure
 


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

NOTES
 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations