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(分子) Formula: K2HPO4，K2HPO4· 3H2O
3. Molecular Weight: anhydrous(无水物): 174.18; trihydrate(三水): 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.
