Amspec KR

Amspec KR is a grade of antimony trioxide appropriate for use as a flame retardant synergist used in combination with a halogen compound. Many materials utilize its flame retardant properties including plastics, rubber, paints, paper, textiles and electronics. Antimony trioxide is appropriate for use in polypropylene (PP), polyethylene (PE), ethylene propylene diene M-class rubber (EPDM), polyvinyl chloride (PVC), high impact polystyrene (HIPS), acrylonitrile butadiene styrene (ABS), polyurethanes, phenolics, epoxies, and many others.

Other applications of antimony trioxide include a clarifying agent for glass, an opacifier for porcelain and enamel, and a white pigment.

Typical Chemical Composition
Minimum Total Sb2O3 (%) 99.5
Maximum Impurity Levels
Arsenic, AS (%) 0.10
Lead, Pb (%) 0.10
Selenium, Se (ppm) 30
Iron, Fe (ppm) 60
Typical Physical Properties
Specific Gravity 5.2 – 5.7
Average particle size (μ) 0.9 – 1.3
Minimum L value 90.0
Minimum a value -1.5
Minimum b value 4.0
325 Mesh (%) 0.1

For any handling and storage questions please see the Amspec Material Safety Datasheet for this product.