Acrylamide is an unsaturated amide, alias AM, its monomer is colorless transparent flake crystal, boiling point 125 ℃ (3325Pa), melting point 84 ~ 85 ℃, density 1.122g / cm. Soluble in water, ethanol, ether, acetone, chloroform, insoluble in benzene and heptane, in the acid environment can be hydrolyzed into acrylic acid. Is the organic synthesis of monomer materials, the production of pharmaceuticals, dyes, paint intermediates. The acrylamide monomer is very stable at room temperature, but it is prone to polymerization when it is at the melting point or above, the oxidation conditions, and the effect of ultraviolet light. When heated to dissolve, acrylamide releases a strong corrosive gas and nitrogen oxide compounds.
Stable at room temperature, but when the sudden polymerization of polymerization. Flammable, by high heat decomposition of corrosive gases. Very toxic, LD50126mg / kg. The central nervous system is harmful, and may cause cancer, the eyes and skin also have a strong stimulating effect. In 1974, Fukuoka County, Japan had occurred acrylamide poisoning incident. Allowable exposure in the air: US TWA 0.3mg / m (ACGIH), water 0.02 ~ 0.07mg / L.
Polyacrylamide is a water-soluble polymer, insoluble in most organic solvents, has good flocculation, can reduce the friction between the liquid, according to the ion characteristics can be divided into non-ionic, anionic, cationic and amphoteric four Type.
Polyacrylamide mesh: mesh refers to the size of the material or roughness, mesh number is the number of square meters per unit area. General definition is 1 inch * 1 inch area of the number of mesh, Number of mesh mesh. Such as 600 mesh is 600 square feet per square inch mesh, polyacrylamide mesh head 20 mesh to 80 mesh, that is, between 0.85mm ~ 0.2mm, which is the granular polyacrylamide mesh size, powder The size of polyacrylamide can be controlled at about 100 mesh, the greater the number of polyacrylamide easier to dissolve, the size of polyacrylamide alone can not measure the size of the product is good or bad.