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The R.J. Marshall Company A202

The R.J. Marshall Company A202 is used in Adhesives, Sealants, Electrical, PVC.

Chemical Name: Alumina Trihydrate (ATH)

Functions: Flame Retardant

Chemical Family: Aluminum Compounds, Trihydrates

Compatible Polymers & Resins: Polyvinyl Chloride (PVC)

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Knowde Enhanced TDS

Identification & Functionality

Plastics & Elastomers Functions
CAS No.
21645-51-2
EC No.
244-492-7

Features & Benefits

Applications & Uses

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 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.
 

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Median Particle Size2μm
Mesh (+325)Trace%