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無(wú)水乙酸鉀

一、化學(xué)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(diǎn)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(dòng)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(fēng)清潔的庫房中，裝載運輸時(shí)要輕裝輕放，防止包裝破損，防止受潮、受熱，運輸過(guò)程中防止雨淋受潮，應與有毒物品隔離。

 

質(zhì)量指標SpecificationJECFA
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 potassiumPass Test
鈉化合物Test for sodium正常(Normal)
鉛，mg/kg           ≤Lead,mg/kg           ≤2
乙酸鹽Test for acetatePass Test
pH值（50g/L溶液，25℃）pH Value (50g/L solution,25℃)7.5-9.0

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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.