Sodium Acetate Anhydrous/Trihydrate

Chemical name: Sodium Acetate

Chemical formula: C2H3NaO2·xH2O(x=0 or 3)

Molecular weight: anhydrous: 82.03 ; trihydrate:136.08

CAS: anhydrous 127-09-3 ; trihydrate 6131-90-4

Description:Sodium Acetate occurs as colorless,transparent crystals or as a granular,crystalline or white powder.The anhydrous form is hygroscopic;the trihydrate effloresces in warm,dry air.One gram of the anhydrous form dissolves in about 2mL of water;1 g of the trihydrate dissolves in about 0.8mL of water and in about 19mL of alcohol.

Specifications

Name of index

FCC V

E262(i)

Identification

Pass test

Pass test

Assay(C2H3NaO2,on dried basis)  %

99.0-101

≥98.5

Alkalinity, %

≤0.2      anhydrous
≤0.05     trihydrate

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Lead, mg/kg

≤2

≤2

 Loss on drying%

≤1.0      anhydrous
36.0-41.0   trihydrate

≤2.0     anhydrous (120℃,4hours)
36.0-42.0  trihydrate  (120℃,4hours)

Potassium Compounds%  

Pass test


PH(1% aqueous solution)

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8.0-9.5

Arsenic g/kg

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≤3

Mercury

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≤1

Formic acid,formats and other oxidisable substances mg/kg

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≤1000

 

Applications : Buffer.

Packing :25kgs net paper bags.

Storage and transport : It should be stored in a ventilative and dry warehouse instead of in the open air, kept away from water, moisture and sunlight during transport, handled with care, so as to avoid damage to plastic bags. Furthermore, it should be stored separately from poisonous substances.

Shelf life : two years.


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