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一,、化學(xué)名： 磷酸氫二鉀
二,、分子式： K2HPO4,，K2HPO4· 3H2O
三,、分子量： 無(wú)水物：174.18,；三水物：228.18
四,、CAS: 無(wú)水物：7758-11-4,；三水物：16788-57-1
五,、性能：無(wú)色或白色正方晶體粉末或顆粒,，易潮解,，呈堿性，不溶于乙醇,，1﹪水溶液的PH值約為9,。
六、用途： 在食品工業(yè)中作緩沖劑,、螯合劑,、酵母食料、乳化鹽,、抗氧化增效劑,。
七、包裝： 內(nèi)襯聚乙烯塑料袋,，外套復(fù)合塑料編織袋包裝,，每袋凈重25千克。
八,、貯存與運(yùn)輸： 本品應(yīng)貯存在干燥通風(fēng)清潔的庫(kù)房中,，裝載運(yùn)輸時(shí)要輕裝輕放，防止包裝破損,，防止受潮,、受熱,，運(yùn)輸過(guò)程中防止雨淋受潮，應(yīng)與有毒物品隔離,。
|
質(zhì)量指標(biāo) |
Specification |
GB25561-2010 |
FCC V |
|
|
含量(干基計(jì)),w% ≥ |
Content（Dry Basis） |
98 |
98 |
|
|
砷（As),mg/Kg ≤ |
Arsenic |
3 |
3 |
|
|
氟化物（以F計(jì)）,mg/Kg ≤ |
Fluoride |
10 |
10 |
|
|
重金屬（以Pb計(jì)),mg/Kg ≤ |
Heavy Metals |
10 |
---------- |
|
|
水不溶物, w% ≤ |
Water Insolubles |
0.2 |
0.2 |
|
|
鉛（Pb）,mg/Kg ≤ |
Lead |
2 |
2 |
|
|
干燥失重,w% |
無(wú)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.
