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SULFANILIC ACIDICSC: 0569
4-Aminobenzenesulfonic acid
Aniline-4-sulfonic acid
April 2005
CAS #: 121-57-3
EC Number: 204-482-5

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.    NO open flames.    Use water spray, powder, foam, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work.  Rinse mouth. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered sealable containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Separated from strong acids and strong bases. 
PACKAGING
 
SULFANILIC ACID ICSC: 0569
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE POWDER OR WHITE-TO-GREY CRYSTALS. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating at 288°C, on burning and on contact with strong acids. This produces toxic fumes including nitrogen oxides and sulfur oxides. Reacts violently with strong bases. 

Formula: C6H7NO3S
Molecular mass: 173.2
Decomposes at 288°C
Density: 1.49 g/cm³
Solubility in water: poor
Octanol/water partition coefficient as log Pow: -0.9  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
 

Effects of short-term exposure
The substance is irritating to the eyes. The substance is mildly irritating to the skin. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
At room temperature this substance is in the form of monohydrate.
It becomes anhydrous around 100°C. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xi; R: 36/38-43; S: (2)-24-37 

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    See Also:
       Toxicological Abbreviations