Cyanuric chloride

CAS Number
108-77-0
EC Number
203-614-9
Chemical Formula
C3Cl3N3
Molecular Weight
184.41 g/mol

Description

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.

Other Names (Synonyms)

Tricyanogen chloride|sym-Trichlorotriazine|s-Triazine trichloride|Cyanuryl chloride|Cyanuric trichloride|Cyanuric acid trichloride|Cyanuric acid chloride|2,4,6-Trichloro-sym-triazine

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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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℃

Documentation

Safety & Handling Learn More

Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard

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

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.

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
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