R.J. Marshall - AH255 - 21645-51-2 - Aluminum Compounds

Enhanced TDS

Chemical Family: Aluminum Compounds,
Trihydrates
Chemical Name: Alumina Trihydrate (ATH)
Plastics & Elastomers Functions: Flame Retardant
CAS No.: 21645-51-2
EC No.: 244-492-7
Technologies: Elastomers,
Plastics
Product Families: Elastomers — Elastomer Additives
Flame Retardants
Plastics — Polymer Additives
Flame Retardants

Materials Features: Abrasion Resistant,
Arc Resistant,
Chemical Resistant,
Low Smoke Emission,
Non-Halogenated,
Non-Toxic,
Tracking Resistant

Markets: Adhesives & Sealants,
Building & Construction,
Electrical & Electronics,
Industrial
Applications: Adhesives & Sealants — Building & Construction
Other Building & Construction Applications
Building & Construction — Building Materials
Structural Components
Industrial — Chemical & Industrial Manufacturing
Industrial Adhesives & Sealants
Adhesives & Sealants — Industrial & Assembly Adhesives
Other Industrial & Assembly Applications
Building & Construction — Infrastructure, Roads & Paving
Other Infrastructure Applications
Building & Construction — Other Building & Construction Applications
Electrical & Electronics — Other Electrical & Electronics Applications
What is Alumina Trihydrate?: Alumina Trihydrate (A1203•3H20) is the most widely used flame retardant in the world due to its versatility and low cost. Available in different particle sizes, it can be used in a wide range of polymers at processing temperatures below 220°C. ATH is non-toxic, halogen-free, chemically inert, and has low abrasiveness. Additional benefits are arc and track in plastics to arcing, acid resistance, and smoke suppression. At about 2200C, ATH begins to decompose endothermically releasing approximately 35% of its weight as water vapor.
A1203.3H20 + HEAT------> A1203 + 3 H20

Alumina Trihydrate acts as heat sink thereby retarding pyrolysis and reducing the burning rate. "Ihe water vapor released has an added effect of diluting combustion gasses and toxic fumes.

Physical Form

Powder,

Typical Properties