"Description Appearance: White to off-white Powder Assay:=98% PH(5%in water):6.5-8.5 Melting Point =240°C Heavy Metal:=10ppm D50 Particle size D50:=5.0µm D100 Particle size –10:=20.0µm Chemical Stability: Stable under normal temperatures and pressure. Conditions to Avoid: Incompatible materials, strong oxidants. Incompatibilities with Other Materials: not available. Hazardous Decomposition Products: irritating and toxic fumes and gases. Hazardous polymerization: not available"