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p-TOLUENESULFONIC ACID (max. 5% sulfuric acid)ICSC: 0773 (October 2006)
Toluene-4-sulfonic acid
4-Methylbenzenesulfonic acid
p-Methylphenylsulfonic acid
Tosic acid
CAS #: 104-15-4
UN #: 2585
EC Number: 203-180-0

  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, alcohol-resistant foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT DISPERSION OF DUST! AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS PREVENTION FIRST AID
Inhalation Sore throat. Cough. Burning sensation. Laboured breathing. Shortness of breath.  Use local exhaust. Use breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention. 
Skin Redness. Pain. Serious skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention. 
Eyes Redness. Pain. Burns.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Sore throat. Burning sensation in the throat and chest. Shock or collapse.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Sweep spilled substance into covered dry, plastic containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

excl mark;warncorr
DANGER
Harmful if swallowed
Causes severe skin burns and eye damage
Harmful to aquatic life 

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

STORAGE
Dry. Separated from strong bases and food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
p-TOLUENESULFONIC ACID (max. 5% sulfuric acid) ICSC: 0773
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS HYGROSCOPIC FLAKES. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. This produces toxic and corrosive fumes including sulfur oxides. The substance is a strong acid. It reacts violently with bases and is corrosive. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Formula: C7H8O3S / CH3C6H4SO3H
Molecular mass: 172.2
Melting point: 106-107°C
Relative density (water = 1): 1.24
Solubility in water, g/100ml at 25°C: 67 (freely soluble)
Flash point: 184°C c.c.
Octanol/water partition coefficient as log Pow: 0.9 (calculated) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
Serious local effects by all routes of exposure. 

Effects of short-term exposure
The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. Inhalation of the aerosol may cause lung oedema. See Notes. Medical observation is indicated. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is harmful to aquatic organisms. 

NOTES
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 are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.
UN 2585 applies to p-toluenesulfonic acid with no more than 5% free sulfuric acid.
UN 2583 applies to p-toluenesulfonic acid with more than 5% free sulfuric acid.
Hydrated form has CAS number 6192-52-5. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xi; R: 36/37/38; S: (2)-26-37 

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