Chlorendic acid

CAS: 115-28-6

Overview

Chlorendic acid (CAS 115-28-6 ) is a chlorinated dicarboxylic acid used as a reactive flame retardant and chemical intermediate in polymer and resin manufacturing. Its high chlorine content is incorporated directly into polymer backbones.

This delivers durable flame retardancy that cannot be washed out or migrated away like additive-type retardants. In unsaturated polyester resins, it is reacted into the polymer chain to produce flame-retardant laminates.

These composites are used in construction panels, ducting, and electrical enclosures. Aerospace and defense applications rely on these resins where self-extinguishing performance must meet stringent specification requirements.

This performance is achieved without compromising structural integrity. Electronics manufacturers use it in circuit board laminates and insulating components where sustained flame resistance under thermal load is a requirement.

It also functions as a monomer in alkyd and specialty resin systems for automotive and industrial coatings. These applications often require halogenated flame-retardant certification for safety and compliance standards.

The product is supplied as an off-white to pale yellow crystalline powder. Technical grade is the standard commercial form, with purity levels typically specified at 98% or higher for reactive resin applications.

Packaging is available in multi-kilogram bags through to bulk quantities to suit both formulation-scale and industrial production sourcing requirements for global chemical distribution and manufacturing.

Physical Properties

Melting Point	209 °C
Boiling Point	175°C (rough estimate)
Density	1.7157 (estimate)
Appearance	solid
Color	White to Off-White
Form	Solid

Safety & Handling

Danger GHS05 GHS07 GHS08 Hazard Statements H302 Harmful if swallowed H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H335 May cause respiratory irritation H350 May cause cancer H351 Suspected of causing cancer Precautionary Statements P203 Obtain, consult and follow expert instructions for use. 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. P280 Wear protective gloves/protective clothing/eye protection/face protection. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+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. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. 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	2917.20.0000
Storage Class	11 - Combustible Solids
WGK (Germany)	3

Other Names

Industries

Building & Construction Automotive Aerospace & Defense Electronics Plastics & Polymers