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磷酸二氢钠

工业级、食品级、医药级、试剂级磷酸二氢钠

产品描述详情/ Product description

化 学 名:
磷酸二氢钠
英文名称:
Monosodium Phosphate
分 子 式:
NaH2PO4,NaH2PO4·H2O,NaH2PO4·2H2O K3PO4·nH2O
分 子 量:
无水物:120.01;一水物:138.01;二水物:156.01
CAS NO:
无水物:7558-80-7;一水物:10049-21-5;二水物:13472-35-0
性  能:
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。
包  装:
内衬聚乙烯塑料袋,外套复合塑料编织袋,每袋净重25千克。
贮存与运输:
应贮在干燥,通风清洁的库房中.
用途:
缓冲剂;品质改良剂;乳化剂;营养增补剂;抗氧化增效剂;盐水穿透助剂;糖澄清剂;稳定剂;凝胶剂;禽类烫毛剂。
其他信息:
质量指标 GB 25564-2010
含量(以干基计) , w/% 98.0-103.0
pH (10g/L溶液) 4.1-4.7
水不溶物 , w/%  ≤ 0.2
重金属(以Pb计),mg/kg  ≤ 10
铅 (Pb),mg/kg  ≤ 4
砷(As),mg/kg   ≤ 3
氟化物( 以F计),mg/kg   ≤ 50
干燥失重, w/% NaH2PO4  ≤ 2.0
NaH2PO4·H2O 10.0-15.0
NaH2PO4·2H2O 20.0-25.0

 

Chemical Name:Monosodium Phosphate

Molecular Formula:NaH2PO4,NaH2PO4·H2O,NaH2PO4·2H2O

Molecular Weight: Anhydrous: 120.01; Monohydrate: 138.01; Dihydrate: 156.01

CAS: Anhydrous: 7558-80-7; Monohydrate: 10049-21-7; Dihydrate: 13472-35-0

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.

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.

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.

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.

 

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