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BENZENESULFONIC ACIDICSC: 1626
October 2005
CAS #: 98-11-3Benzenemonosulfonic acid
Phenylsulfonic acid
UN #: 2585
EINECS #: 202-638-7

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION 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.   

 STRICT HYGIENE!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
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 CLASSIFICATION & 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. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 8; UN Pack Group: III 

STORAGE
Separated from oxidants, bases, metals and food and feedstuffs. Dry. Well closed. Ventilation along the floor. 
PACKAGING
Do not transport with food and feedstuffs. 
BENZENESULFONIC ACID ICSC: 1626
PHYSICAL & CHEMICAL INFORMATION

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). 

Formula: C6H6O3S
Molecular mass: 158.2
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  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly on spraying. 

Effects of long-term or repeated exposure
 


Occupational exposure limits
 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations