First, the chemical name: calcium dihydrogen phosphate, calcium phosphate II, the formula: Ca (H2PO4) 2, Ca (H2PO4) 2 H2O three, molecular weight: Anhydrous: 234.05; monohydrate:? 252.07 four, CAS: None the water: 7758-23-8; monohydrate: 10031-30-8 five properties: white crystal powder or crystalline flakes, the proportion of 2.220, at 100 ℃ lose crystal water, dissolved in hydrochloric acid and nitric acid, slightly soluble water (1.8%). Sixth, use: as a leavening agent in the food industry, dough regulator, buffer, organization modifier, curing agents, nutritional supplements, chelating agents and the like. 7, Packing: lined with polyethylene plastic bag, coat composite plastic woven bag, net weight 25 kg. Eight, storage and transportation: This product should be stored in dry and ventilated and clean warehouse, loading transportation to care, to prevent the packaging is damaged, preventing moisture, heat, moisture during transport to prevent rain, toxic substances should be isolated. Quality Index Specification GB25559-2010 FCC, 1999 content (Ca dollars), w /% dry matter Content (As Ca) 16.8-18.3 16.8-18.3 (Anhydrous) monohydrate 15.9-17.7 15.9-17.7 (Monohydrate) arsenic ( As), mg / kg ≤ Arsenic 3 3 Lead (Pb), mg / kg ≤ Lead 3 5 Heavy metal (P b dollars), mg / kg ≤ Heavy Mental (As P b) 10 15 Fluoride (as F) , mg / kg ≤ Fluoride 25 50 Loss on drying, anhydrous, w /% ≤ Loss On Drying 1.0 1.0 (Anhydrous) loss on ignition, monohydrate, w /% ≤ Loss On Ignition 14.0-15.5 14.0-15.5 (Monohydrate) Clarity Clarity experimentally - by testing Carbonate Carbonate - free acid and auxiliary salt Free Acid & Its Auxiliary Salt experimentally -