The color of diatomite is white, grayish white, gray, light gray, light grayish brown, light yellow, etc; Density: 1.9 ~ 2.3g/cm3; Bulk density: 0.34 ~ 0.65g/cm3; Melting point 1650 ℃ ~ 1750 ℃; Specific surface area 19 ~ 6chemical book 5cm2 / g; Pore volume: 0.45 ~ 0.98cm3/g; The water absorption is 2 ~ 4 times of its own volume. High chemical stability, insoluble in hydrochloric acid and easily soluble in alkali. It has many excellent properties such as relative incompressibility, soft, sound insulation, wear resistance, heat resistance and so on.

Diatomite is used as filter agent for synthetic resin, chemical fiber, dye, coating, solvent, acid, electrolyte, glycerol, carrier of chemical fertilizer and pesticide, ideal filler for plastic, rubber and pesticide, filter aid for recovering sodium thiocyanate, activated carbon for decolorization in nylon solution, anti caking agent of ammonium nitrate pellets, etc. It is also widely used in light industry, food, medicine, building materials, petroleum, papermaking, environmental protection and other departments. Diatomite has broad development prospects.

It is used for gas chromatography analysis, as raw material of diatomite carrier, as adsorbent, filter aid and filler. It is used for thin layer chromatography to separate carbohydrates, sugars, alcohols, amino acids, carboxylic acids and fatty acids.