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、性状：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。具有吸湿性。
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 |
Specification |
FCC VII |
|||
|
含量（以干基计），w/% ≥ |
Content(On Dry Basis), w/% ≥ |
98.0 |
98.0 |
||
|
砷（As），mg/kg ≤ |
Arsenic(As), mg/kg ≤ |
3 |
3 |
||
|
氟化物（以F计），mg/kg ≤ |
Fluoride(As F),mg/kg ≤ |
10 |
10 |
||
|
重金属（以Pb计），mg/kg ≤ |
Heavy Metal(As Pb), mg/kg ≤ |
10 |
———— |
||
|
水不溶物，w/% ≤ |
Insoluble Substances, w/% ≤ |
0.2 |
0.2 |
||
|
铅（Pb），mg/kg ≤ |
Lead (Pb), mg/kg ≤ |
2 |
2 |
||
|
干燥减量，w/% |
无水物 ≤ |
Loss on drying, w/% |
Anhydrous≤ |
2.0 |
2.0 |
|
pH值（10g/L 溶液，25℃） |
pH value（10g/L,25℃) |
8.6-9.4 |
———— |
||
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 white square crystal granule powder, 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 a polyethylene bag as the inner layer, a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.
8、Storage & Transportation: It should be stored in a dry ventilative warehouse, kept away from heat moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.
