First, the chemical name: potassium sorbate Second, the formula: C6H7KO2 Third, MW: 150.22 four, CAS: 590-00-1 five properties: white to pale yellow crystalline flake, crystalline powder or grainy. Odorless or slight odor. Long-term storage of hygroscopic and oxidative decomposition and coloring in the air. The relative density of 1.363. Melting point 270 ℃ (decomposition). Soluble in water, pH 1% aqueous solution is 7-8 six purposes: preservative; Fungicides. 7, Packing: lined with polyethylene plastic bag, coat plastic woven bag of 25Kg. Eight, storage and transport: It should be stored in a dry, ventilated and clean warehouse, kept away from moisture, heat, transport to prevent rain and moisture, should be stored separately from poisonous substances. Quality Index Specification GB13736-2008 content (dry basis), w /% Content (As Dry Basis) 98.0 ~ 101.0 Clarity test Test of the solution clarity by testing the free base test Test of Free Alkali by loss on drying experiment, w /% ≤ Loss on Drying 1.0 Chloride (Cl dollars), w /% ≤ Chloride (As CL) 0.018 Sulfate (SO4 dollars), w /% ≤ Sulphate (As SO4) 0.038 formaldehyde (HCHO in dollars), w /% ≤ Aldehyde (As HCHO) 0.1 heavy metals (Pb), mg / kg ≤ Heavy Metals (As Pb) 10 arsenic (As), mg / kg ≤ Arsenic (As As) 3 Lead (Pb), mg / kg ≤ Lead (As Pb) 2