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無(wú)水磷酸氫二鉀重質(zhì)

磷酸鉀鹽 2021年5月15日 1,211

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：174.178；三水物：228.238

四、CAS：無(wú)水物：7758-11-4；三水物：16788-57-1

五、性狀：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。具有吸濕性。

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25kg。

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		GB 1886.334-2021	FCC VII
含量（以干基計(jì)），w/%?????≥		Content(On dry basis), w/%??????≥		98.0	98.0
砷（As），mg/kg???????????≤		Arsenic(As),mg/kg?????????????≤		3.0	3.0
氟化物（以F計(jì)），mg/kg????≤		Fluoride(as F),mg/kg???????????≤		10.0	10.0
重金屬（以Pb計(jì)），mg/kg???≤		Heavy metal(as Pb),mg/kg ??????≤		10	———
水不溶物（以干基計(jì)），w/%??≤		Insoluble substances(On dry basis),w/%≤		0.2	0.2
鉛（Pb），mg/kg ??????????≤		Lead (Pb),mg/kg??????????????≤		2.0	2.0
干燥減量，w/%	K₂HPO₄??≤	Loss on drying,w/%?	K₂HPO_{4 ?????}?≤	2.0	2.0
	K₂HPO₄·H₂O	Loss on drying,w/%?	K₂HPO₄·H₂O	22.0-26.0	———
pH值（10g/L溶液）		pH value?(10g/L?Solution )		9.0±0.4	———

1、Chemical Name: Dipotassium Phosphate

2、Molecular Formula:?K₂HPO₄_?; K₂HPO₄· 3H₂O

3、Molecular Weight:?Anhydrous:174.178?; Trihydrate:228.238

4、CAS:?Anhydrous:7758-11-4?; Trihydrate:16788-57-1

5、Character:?It’s colorless or white square crystal granule or 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, and 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 and ventilative warehouse, kept away from heat and moisture during transportation, unloaded with care so as to avoid damage. Furthermore, it must be stored separately from poisonous substances.