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TRICHLOROISOCYANURIC ACIDICSC: 1675
1,3,5-Trichloro-s-triazine-2,4,6(1H,3H,5H)-trione
Symclosene
Trichloro-s-triazinetrione
April 2007
CAS #: 87-90-1
UN #: 2468
EC Number: 201-782-8

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible but enhances combustion of other substances. Gives off irritating or toxic fumes (or gases) in a fire.  Risk of explosion on heating. Risk of explosion on contact with combustible substances or incompatible substances. See Chemical Dangers.  NO contact with combustible substances.    Use water in large amounts, foam, dry powder.  In case of fire: keep drums, etc., cool by spraying with water. NO direct contact with water. 

 STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Laboured breathing.  Use local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention. 
Skin Redness.  Protective gloves.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. 
Eyes Redness. Pain. Burns.  Wear safety goggles.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Abdominal pain. Burning sensation. 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: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered dry, sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

flam circlecorrskull;toxicenviro;aqua
DANGER
May intensify fire; oxidizer
Harmful if swallowed
Fatal if inhaled
Causes mild skin irritation
Causes serious eye damage
Very toxic to aquatic life 

Transportation
UN Classification
UN Hazard Class: 5.1; UN Pack Group: II 

STORAGE
Dry. Well closed. Separated from amines, combustible substances and reducing agents. See Chemical Dangers. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
 
TRICHLOROISOCYANURIC ACID ICSC: 1675
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER WITH PUNGENT ODOUR. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces toxic fumes. May explode on heating. The substance is a strong oxidant. It reacts with combustible and reducing materials. Reacts violently with ammonia, ammonium salts and amines and sodium carbonate (soda ash) . This generates fire and explosion hazard. Reacts with strong acids. This produces toxic gas (chlorine - see ICSC 0126). 

Formula: C3Cl3N3O3
Molecular mass: 232.4
Decomposes at >225°C
Density: 2.07 g/cm³
Solubility in water, g/100ml at 25°C: 1.2
Vapour pressure: negligible
Octanol/water partition coefficient as log Pow: 0.26  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is severely irritating to the eyes and respiratory tract. The substance is mildly irritating to the skin. Corrosive on ingestion. Inhalation of dust may cause lung oedema. See Notes. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed. 

Effects of long-term or repeated exposure
 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
The substance decomposes in water producing hypochloric acid and cyanuric acid.
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 is therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
See ICSC 1313. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: O, Xn, N; R: 8-22-36/37-31-50/53; S: (2)-8-26-41-60-61 

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    See Also:
       Toxicological Abbreviations