Dispersibility: evenly distributed in water and flax oil. Water-soluble matter: ín0.4%. Moisture content: ín 0.5% Oil absorption: 60g~90g/100g Danger: particles suspended in the air. Solubility: no soluble in water or solvent. Chemical varieties: inorganic compound. Chemical resistance: acid and alkali resisting. Bulk density: 24-28g/100ml Heavy metal content: in ppm as.2; ba.5; cd.5; cr.5; hg.1; pb.5; sb.2; se.5; Toxicity: no toxicity, and no stimulative effects on skin and mucous membrane. Temperature resistant degree: no change at 900íµ, noncombustible and non-self-ignite. Particle size distribution: 92% of particle-size concentrated within the standard particle-size range. 25kg in a drum