sodium dichloroisocyanurate

sodium dichloroisocyanurate

English synonyms:

dichloroisocyanuric,acid,sodium salt
CDB 63

  • CAS No.:2893-78-9
  • Molecular Formula:C3CI2N3O3·Na
  • Molecular Weight:219.95

Hazard Overview

Health Hazard:

The dust is irritating to the nose and throat. Inhalation of high concentrations causes bronchospasm, respiratory distress and wheezing. Very high concentrations can cause pulmonary edema and even death if inhaled. It is irritating to the eyes and skin. Oral burns to the digestive tract.

Environmental hazards:.

A serious hazard to the environment.

Explosion hazard

This product is combustible and highly irritating.

First aid measures

Skin Contact:

Remove contaminated clothing and rinse with plenty of running water.

Eye Contact:

Lift the eyelids and rinse with running water or saline. Seek medical attention.


Remove from scene quickly to fresh air. Keep airway clear. If breathing is difficult, administer oxygen. If breathing stops, resuscitate immediately. Seek medical attention.


Gargle with water and give milk or egg whites. Seek medical attention.

Fire precautions

Hazardous Characteristics:

Strong oxidizer. Contact with flammable and organic materials can ignite easily. Reacts with nitrogen-containing compounds (such as ammonia, urea, etc.) to form explosive nitrogen trichloride. When heated or damp, it can easily produce highly toxic fumes.

Hazardous combustion products:.

Carbon monoxide, carbon dioxide, nitrogen oxides, hydrogen chloride, sodium oxide.

Fire extinguishing method:

Firefighters must wear full body fire and hazmat suits and extinguish the fire upwind. Whenever possible, move the container from the scene of the fire to an open area while extinguishing the fire. Then select the appropriate fire extinguishing agent according to the cause of the fire.

Spill Emergency Response

Emergency Response:

Isolate the spill contaminated area and restrict access. It is recommended that emergency responders wear dust masks and general operating uniforms. Do not come into direct contact with spilled material. Small spills: Cover with dry sand, vermiculite, or other inert material. Collect in a closed container with a clean shovel. Large spills: collect for recycling or take to a waste disposal site.

Handling Disposal and Storage

Precautions for Operation

Airtight operation, providing adequate local exhaust air. Prevent the release of dust into the workshop air. Operators must be specially trained to strictly follow operating procedures. It is recommended that operators wear dust masks (full face masks), one-piece mylar hazmat suits, and rubber gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Keep away from flammable and combustible materials. Avoid generating dust. Avoid contact with ammonium salts, nitrides, oxidizers and alkalis. Equip fire-fighting equipment and spill response equipment of appropriate variety and quantity. Emptying the container may leave harmful residues.

Storage Note:

Store in a cool, dry, well-ventilated warehouse. Keep away from fire and heat sources. Protect from direct sunlight. Package must be sealed and not exposed to moisture. It should be stored separately from flammable (combustible) materials, ammonium salts, nitrides, oxidizers, alkalis, etc. Do not mix them. Suitable materials should be available in the storage area to contain spills.

Exposure Control/Individual Protection

Engineering Control:

Tightly sealed to provide adequate local exhaust ventilation.

Respiratory Protection:

A dust mask (full face mask) must be worn when there is a possibility of exposure to dust. An air respirator should be worn in emergency situations for rescue or evacuation.

Eye Protection:

Protected in respiratory protection.

Body Protection:

Wear a hooded mylar hazmat suit.

Hand Protection:

Wear rubber gloves.

Other protection:

Smoking, eating and drinking are not allowed on the job site. Shower and change clothes after work. Maintain good hygiene habits.

Physical and Chemical Properties

  • Appearance and properties:White crystal with chlorine smell.
  • Melting point (℃):230~250
  • Heat of combustion (kJ/mol):Meaningless
  • Flash Point (°C):Meaningless
  • Ignition temperature (℃):Meaningless
  • Explosive Limit % (V/V):Meaningless
  • Lower Explosion Limit % (V/V):Meaningless
  • Solubility:Soluble in water.
  • Main use:Used for bleaching, disinfection, cleaning, etc.

Stability and Reactivity

Conditions for Avoiding Exposure:

Can be decomposed in contact with moisture.

Prohibited Compounds:

Flammable or combustible materials, ammonium salts, nitrogenous compounds, strong oxidizers, strong alkalis, moist air.

Toxicological Information


Hare percutaneous.
500 mg, heavy stimulation. Rabbit trans-ocular.
10mg/24 hours, moderate stimulation.

Acute toxicity:

LD50: 1420mg/kg(rat by mouth)

Ecological Data

Other harmful effects:

This substance is a serious hazard to the environment and is strictly prohibited from entering the environment.


Disposal Method:

Dispose of by safe burial. Damaged containers are not allowed to be reused and are to be buried in a specified place.

Transportation Information

  • Dangerous Goods Number:51077
  • UN No.:2465

Packaging Method:

Plastic bags or two-layer kraft paper bags outside the full opening or opening steel drum; plastic bags or two-layer kraft paper bags outside the ordinary wooden box; threaded glass bottles, plastic bottles or plastic bags outside the ordinary wooden box; threaded glass bottles, plastic bottles or tinned steel drums (cans) outside the full bottom lattice box, fiberboard box or plywood box.

Note for transportation

Rail transportation should be carried out in strict accordance with the Dangerous Goods Table in the Ministry of Railways “Rules for the Transportation of Dangerous Goods”. During transportation, the container should be shipped separately to ensure that it does not leak, collapse, fall or be damaged. The transport vehicle should be equipped with the appropriate variety and quantity of fire-fighting equipment during transport. It is strictly forbidden to mix with acids, flammables, organics, reducing agents, spontaneous combustibles, wet and flammable materials, etc.. The transport speed should not be too fast and overtaking should not be forced. Road transport should be in accordance with the prescribed route. Before and after loading and unloading the transport vehicles, they should be thoroughly cleaned and washed, and it is forbidden to mix with impurities such as organics and flammables.