磷酸二氢钠(科多牌)

专业生产磷酸二氢钠 MonOSODIUM PHOSPHATE

一、化学名称：磷酸二氢钠
二、分子式：NaH2PO4，NaH2PO4•H2O，NaH2PO4•2H2O
三、分子量：无水物：120.01；一水物：138.01；二水物：156.01
四、CAS：无水物：7558-80-7；一水物：10049-21-5；二水物：13472-35-0
五、性状：无色柱状结晶。无臭。稍有潮解性。相对密度2.04。熔点60℃。易溶于水。不溶于乙醇。100℃以下加热，可溶于结晶水形成一水盐。加热至100℃失去结晶水而成无水物，继续加热则变为偏磷酸钠。
六、用途：缓冲剂、品质改良剂、乳化剂、营养增补剂、增效剂、盐水穿透助剂、糖澄清剂、稳定剂、凝胶剂、禽类烫毛剂。
七、包装：内衬聚乙烯塑料袋，外套复合塑料编织袋，每袋净重25kg。
八、贮存与运输：本品应贮存在干燥通风清洁的库房中，装载运输时要轻装轻放，防止包装破损，防止受潮、受热，运输过程中防止雨淋受潮，应与有毒物品隔离。
质量指标 Specification GB 1886.336-2021， FCC VII
含量(以干基计) , w/% Content (NaH2PO4), w/% 98.0-103.0 98.0-103.0
pH (10g/L溶液) pH Value （10g/L） 4.1-4.7 ————
水不溶物 , w/% ≤ Insoluble Substances, w/% ≤ 0.2 0.2
重金属(以Pb计)，mg/kg ≤ Heavy metal(Pb)，mg/kg ≤ 10 ————
铅 (Pb)，mg/kg ≤ Pb，mg/kg ≤ 4 4
砷(As)，mg/kg ≤ As，mg/kg ≤ 3 3
氟化物( 以F计)，mg/kg ≤ Fluorides (F)，mg/kg ≤ 50 50
干燥失重, w/%
NaH2PO4 ≤ Loss On Drying NaH2PO4 ≤ 2.0 2.0
NaH2PO4•H2O NaH2PO4•H2O 10.0-15.0 10.0-15.0
NaH2PO4•2H2O NaH2PO4•2H2O 20.0-25.0 20.0-25.0
1. Chemical Name: Monosodium Phosphate
2. Molecular Formula: NaH2PO4，NaH2PO4•H2O，NaH2PO4•2H2O
3. Molecular Weight: Anhydrous: 120.01; Monohydrate: 138.01; Dihydrate: 156.01
4. CAS: Anhydrous: 7558-80-7; Monohydrate: 10049-21-7; Dihydrate: 13472-35-0
5. Character: It is colorless column crystal, odorless, slightly deliquescence. The relative density is 2.04 and melting point is 60℃. It is easily soluble in water but insoluble in ethanol. If heated below 100℃, it can dissolve in its’ own crystal water and convert to monohydrate salt. When heated up to 100℃, it’ll lose crystal water and change to anhydrous substances, which will become Sodium metaphosphate if it continues to be heated.
6. Usage: In food industry, it is used as buffering, character improving agent, emulsifier, nutrition supplement, antioxidant additive, brine penetrable agent, sugar clarifier, stabilizer, coagulant and fowl scalding agent.
7. Packing: It is packed with polyethylene bag as inner layer and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage and Transport: It should be stored in a dry and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.