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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、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 |
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.
