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無水乙酸鉀

乙酸鹽 2020年8月12日 1,241

一、化學名：乙酸鉀

二、分子式：C₂H₃KO₂

三、分子量：98.14

四、CAS：127-08-2

五、性狀：白色結晶性粉末，易潮解，有咸味。1mol/l水溶液pH值為7.0-9.0。相對密度（d₄²⁵）1.570,?熔點292℃,?極易溶于水(235g/100mL, 20℃; 492g/100mL, 62℃)、乙醇(33g/100mL)和甲醇(24.24g/100mL, 15℃)，不溶于乙醚。

六、用途：緩沖劑、中和劑、防腐劑、護色劑（動植物天然色保護劑）。

七、包裝：內襯聚乙烯塑料袋，外套復合塑料編織袋包裝，每袋凈重25kg。

八、貯存與運輸：本品應貯存在干燥通風清潔的庫房中，裝載運輸時要輕裝輕放，防止包裝破損，防止受潮、受熱，運輸過程中防止雨淋受潮，應與有毒物品隔離。

質量指標	Specification	JECFA
含量（以干基計），w/% ????????≥	Content(As Dry Basis),w/% ????≥	99.0
干燥失重（150℃，2h），w/% ????≤	Loss On Drying(150℃,2h),?w/% ??≤	8.0
堿度	Alkalinity	正常(Normal)
鉀化合物	Test for potassium	Pass Test
鈉化合物	Test for sodium	正常(Normal)
鉛，mg/kg???????????≤	Lead,mg/kg???????????≤	2
乙酸鹽	Test for acetate	Pass Test
pH值（50g/L溶液，25℃）	pH Value (50g/L?solution,25℃)	7.5-9.0

1、Chemical Name: Potassium ?Acetate

2、Molecular Formula :?C₂H₃KO₂

3、Molecular Weight:?98.14

4、CAS:?127-08-2

5、Character:?It is white crystalline powder. It’s easily?deliquescent and tastes salty. PH value of 1mol/L aqueous solution is 7.0-9.0. Relative density（d₄²⁵）?is 1.570. Melting point is 292℃. It’s highly soluble in water?(235g/100mL, 20℃; 492g/100mL, 62℃), ethanol?(33g/100mL)?and methanol (24.24g/100mL, 15℃), but insoluble in ether.

6、Usage:?It is used as buffering agent, neutralizer, preservative?and?color fixative to

protect natural colors?of animals and plants.

7、Packing:?It is packed with polyethylene bag as inner layer, and a compound plastic woven bag as outer layer. The net weight of each bag is 25kg.

8、Storage?and?Transport:?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.

標簽: 無水乙酸鉀