磷酸氢二钾 DIPOTASSIUM PHOSPHATE
一、化学名: 磷酸氢二钾
二、分子式: K2HPO4,K2HPO4• 3H2O
三、分子量: 无水物:174.18;三水物:228.18
四、CAS: 无水物:7758-11-4;三水物:16788-57-1
五、性能: 无色或白色正方晶体粉末或颗粒,易潮解,呈碱性,不溶于乙醇,1﹪水溶液的PH值约为9。
六、用途: 在食品工业中作缓冲剂、螯合剂、酵母食料、乳化盐、增效剂。
七、包装: 内衬聚乙烯塑料袋,外套复合塑料编织袋包装,每袋净重25千克。
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 GB25561-2010 FCC V
含量(干基计),w% ≥ Content(Dry Basis) 98 98
砷(As),mg/Kg ≤ Arsenic 3 3
氟化物(以F计),mg/Kg ≤ Fluoride 10 10
重金属(以Pb计),mg/Kg ≤ Heavy metals 10 ----------
水不溶物, w% ≤ Water Insolubles 0.2 0.2
铅(Pb),mg/Kg ≤ Lead 2 2
干燥失重,w% 无水物 ≤ Loss on drying 2.0 2.0
三水物 20.0-30.0 20.0-30.0
pH值,(10g/L溶液) pH Value 9.0±0.4 ----------
1. Chemical Name: Dipotassium phosphate
2. Molecular Formula: K2HPO4,K2HPO4• 3H2O
3. Molecular Weight: anhydrous: 174.18; trihydrate: 228.18
4. CAS: anhydrous: 7758-11-4; trihydrate: 16788-57-1
5. Character: It’s colorless or white square crystal granule, easily deliquescent, alkaline, insoluble in ethanol. PH value is about 9 in 1% aqueous solution.
6. Uses: In food industry, it is used as buffering agent, chelating agent, yeast food, emulsifying salt, synergistic agent of anti-oxidation.
7. Packing: It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as the outer layer. The net weight of each bag is 25kg.
8.Storage & Transportation: It should be stored in a dry and ventilating warehouse. Be cautious to keep away from moisture and hot; unloaded with care, so as to avoid the damage. Furthermore, it should be stored separately from poisonous substances.
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