Cyanuric chloride

CAS: 108-77-0

Overview

Cyanuric chloride (CAS 108-77-0 ), also known as sym-trichlorotriazine, is a reactive triazine intermediate used across chemical synthesis and industrial manufacturing. Its three replaceable chlorine atoms make it a building block for producing dyes and agrochemicals.

This versatile compound is essential for manufacturing UV stabilizers and flame retardants at a commercial scale. In textile processing, it acts as a coupling agent for reactive dyes, bonding colorants permanently to cellulose fibers in cotton dyeing operations.

Coatings and polymer formulators use it to synthesize UV absorbers and light stabilizers that protect resins, films, and surface coatings from photodegradation. These applications ensure long-term durability for materials exposed to sunlight.

Water treatment chemical producers rely on it as a precursor to chlorinated isocyanurates used for disinfection and algae control. It plays a critical role in maintaining safety standards for industrial and municipal water systems.

In flame retardant production, it serves as a core scaffold for nitrogen-based FR additives incorporated into plastics and elastomers. This functionality is vital for meeting fire safety regulations in the construction and automotive sectors.

Cyanuric chloride is supplied as a white crystalline powder or flakes. Technical grade is the standard commercial form, with purity typically specified at 98% or higher for industrial synthesis applications.

It is packaged in moisture-controlled containers given its reactivity with water during storage and transport. Proper handling ensures the material maintains its chemical integrity for high-precision manufacturing processes.

Physical Properties

Melting Point	146 °C
Boiling Point	192 °C
Density	1.32 g/cm³
Flash Point	190°C
Appearance	White Powder
Color	White
Odor	pungent odor
Form	Solidified Mass or Fragments
Water Solubility	reacts
Vapor Pressure	0.8 mm Hg ( 62.2 °C)
Refractive Index	1.676
Log P	1.73-2.14 at 25℃

Safety & Handling

Danger GHS05 GHS06 GHS07 GHS08 Hazard Statements H301 Toxic if swallowed H302 Harmful if swallowed H313 May be harmful in contact with skin H314 Causes severe skin burns and eye damage H315 Causes skin irritation H317 May cause an allergic skin reaction H318 Causes serious eye damage H330 Fatal if inhaled H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled H335 May cause respiratory irritation H336 May cause drowsiness or dizziness H361 Suspected of damaging fertility or the unborn child H370 Causes damage to organs H372 Causes damage to organs through prolonged or repeated exposure H373 May causes damage to organs through prolonged or repeated exposure Precautionary Statements P203 Obtain, consult and follow expert instructions for use. P233 Keep container tightly closed. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 In case of inadequate ventilation wear respiratory protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P320 Specific treatment is urgent (see … on this label). P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P403 Store in a well-ventilated place. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P316 Get emergency medical help immediately. P301+P317 Get emergency medical help. P302+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P332+P317 Get emergency medical help. P333+P317 Get emergency medical help. P342+P316 Get emergency medical help immediately. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code	29336980
UN Number	2670
ADR Class	8
Packing Group	II
Storage Class	6.1B - Non-combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)	1

Other Names

Industries

Water Treatment Coatings, Adhesives, Sealants & Elastomers Textile, Leather & Paper Plastics & Polymers