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.
