乙酸钾 POTASSIUM ACETATE

一、化学名：乙酸钾

二、分子式：C₂H₃KO₂

三、分子量：98.14

四、CAS：127-08-2

五、性状：白色结晶性粉末，易潮解，有咸味。1mol/l水溶液pH值为7.0-9.0。相对密度（d₄²⁵）1.570, 熔点292℃, 极易溶于水(235g/100mL, 20℃; 492g/100mL, 62℃)

六、用途：缓冲剂、中和剂、防腐剂、护色剂（动植物天然色保护剂）。

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25kg。

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	JECFA
含量（以干基计），w/% ≥	Content(As Dry Basis),w/% ≥	99.0
干燥失重（150℃，2h），w/% ≤	Loss On Drying(150℃,2h), w/% ≤	8.0
碱度	Alkalinity	正常(Normal)
钾化合物	Test for potassium	Pass Test
钠化合物	Test for sodium	正常(Normal)
铅，mg/kg ≤	Lead,mg/kg ≤	2
乙酸盐	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.