Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Chemical Name
- Plastics & Elastomers Functions
- CAS No.
- 21645-51-2
- EC No.
- 244-492-7
- Technologies
Features & Benefits
Applications & Uses
- Applications
- Compatible Polymers & Resins
- 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 H20Alumina 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.
Properties
- Typical Properties
Value | Units | Test Method / Conditions | |
Median Particle Size | 2 | μm | — |
Mesh (+325) | Trace | % | — |