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磷酸氢二钠十二水

产品介绍

一、化学名:磷酸氢二钠

二、分子式:Na2HPO4,Na2HPO4·2H2O,Na2HPO4·12H2O

三、分子量:无水物:141.96;二水物:177.99;十二水物:358.14

四、CAS:秒速时时彩无水物:7558-79-4;二水物:10028-24-7;十二水物:10039-32-4

五、性状白色结晶性粉末和颗粒,易溶于水,不溶于乙醇,相对密度为1.52,熔点34.6℃,180℃时失去结晶水成无水物,无水物形式易吸潮。

六、用途:食品中作焙制品,防止氧化变色,奶制品的乳化剂,防止蛋白凝固,固体饮料起螯合,乳化缓冲作用。

七、包装:秒速时时彩内衬聚乙烯塑料袋.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SpecificationGB 25568-2010FCC VII
含量Na2HPO4(以干基计),w/% ??≥Assay (Na2HPO4, Dry Basis),w/% ??≥98.098.0
砷(As),mg/kg???????????????≤As, mg/kg??????????????????≤33
重金属(以Pb计),mg/kg??????≤Heavy Metal (Pb), mg/kg?????????≤10————
铅(Pb),mg/kg???????????????≤Pb,mg/kg??????????????????≤44
氟化物(以F计),mg/kg???????≤Fluorides,mg/kg?????????????≤5050
水不溶物,w/% ????????????????≤Insoluble?Substances,w/% ???????≤0.20.2
干燥减量,w/% Na2HPO4 ??????≤Loss On DryingNa2HPO4 ????????≤5.05.0
Na2HPO4·2H2ONa2HPO4·2H2O18.0-22.018.0-22.0
Na2HPO4·12H2O ≤Na2HPO4·12H2O ??≤61.0————

1、Chemical Name:?Disodium Phosphate

2、Molecular Formula:, Na2HPO4,Na2HPO4·2H2O,Na2HPO4·12H2O

3、Molecular Weight: Anhydrous: 141.96; Dihydrate: 177.99; Dodecahydrate: 358.14

4、CAS: Anhydrous: 7558-79-4; Dihydrate: 10028-24-7; Dodecahydrate: 10039-32-4

5、Character:?It is white or colorless rhombic crystalline or prismatic crystal. It’s easily soluble in water, but insoluble in ethanol. The relative density is 1.52?and melting point is 34.6℃. If heated to 180℃, it will lose crystal water and convert to anhydrous.

6、Usage: In food industry, it is used as agent for baking to avoid oxidation stain and as emulsifier in dairy product to prevent egg white from solidification. It is also used as emulsifier and chelating agent for solid drinks.

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:秒速时时彩?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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