Sodium fluoride Specifications: Content% ≥ 98.5 iron (Fe)% ≤0.02 free acid (HCI) content% ≤ 0.15 Chloride (CL dollars) ≤0.15 * salt (of SO4) ≤ 0.25 Water insolubles Content% ≤ 0.50105 ℃ Loss on drying% ≤0.40 fineness by 250 / μm test sieve% ≥90 sodium fluoride Properties: white granular or crystalline powder. Odorless. Tasteless. Burning (300 ° C on) after the decomposition into sodium fluoride and silicon tetrafluoride. Decomposition in lye. Generate fluoride and silica. There hygroscopicity. Dissolved in 150 parts of cold water, 40 parts of boiling water, insoluble in ethanol. Its cold solution was neutral, acidic decomposition in hot water. The relative density of 2.679. Moderately toxic, lethal dose (rat, oral) 125mg / kg. Irritation. Sodium fluoride purposes: construction, building materials industry the largest amount of fluorosilicate species. Mainly used as a cosolvent enamel, glass milky agent, acid clay and acid coagulant concrete and wood preservatives, pesticides industry for the manufacture of pesticides. Timber industry as a preservative; acid cement hygroscopic agent. For glass and enamel of milky agents; natural latex products used as a coagulant, electro-galvanized, nickel, iron three yuan coating used as an additive, is also used as a plastic filler. In addition, for the pharmaceutical and fluoride in drinking water treatment, and the manufacture of artificial cryolite sodium fluoride. Sodium fluoride outer packaging and transportation of woven bag, 25KG bag. It should be stored in a dry warehouse. Prevent moisture. Note that when gently handling, packaging to prevent breakage.