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、抗氧化增效剂。
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 |
含量(干基计) ≥% |
Content(Dry Basis) |
98.0 |
砷(以As计,GT-3,配1g/10ml试样液) ≤% |
Arsenic(As As, GT-3;1g/10ml Molten Test Sample) |
0.0003 |
P2O5含量 ≥% |
Content( P2O5) |
39.94(Anhydrous) |
30.52(Trihydrate) | ||
K2O含量 ≥% |
Content( K2O ) |
52.94(Anhydrous) |
40.4(Trihydrate) | ||
氟化物(F) ≤% |
Fluoride(As F) |
0.001 |
重金属(以Pb计) ≤% |
Heavy Metals(As Pb) |
0.0015 |
水不溶物 ≤% |
Water Insoluble |
0.2 |
铅(GT-18-3,试样10g)≤% |
Lead (GT-18-3,10gSample) |
0.0002 |
干燥失重(105℃,4h) % |
Loss On Ignition(105℃,4h) |
≤2.0(Anhydrous) |
20.0-30.0 (Trihydrate) |
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、Usage: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 and Transport: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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