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Ascorbic Acid

Ascorbic Acid

离岸价格

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Minimum Order

位置:

China

最小订单价格:

-

最小订单:

-

包装细节:

25KG/CTN

交货时间:

Promptly

供应能力:

-

付款方式:

T/T, L/C

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免费会员

联系人 danhua

Room 4105, Huagang International Business Building, No. 2, Chengshan Road, Jiangyin Jiangsu, China., Wuxi, Jiangsu

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详情

 

Ascorbic Acid  is a white or slightly yellow crystals or powder,a little acid.m.p.**0℃***2℃,easily soluble in water,a little soluble in alcohol and uneasily soluble in Ether and chlorofom and other organic solvent.In solid state it is stable in air.Its water solution is easliy mutated when it meets with air.

ITEM STANDARD
Appearance White or  almost  white crystal  or  crystalline powder
Identification   Positive
Melting point  **1 ℃  ~  **2℃ 
pH (5%,  w/v)   2.2 ~   2.5 
pH (2%,w/v)   2.4 ~   2.8 
Specific optical  rotation  **0.5°  ~  **1.5°  
Clarity  of  solution Clear 
Heavy metals ≤0.***3% 
Assay (as C 6H 8O6, %)  *9.0  ~  **0.5 
Copper ≤3 mg/kg
Iron ≤2 mg/kg
Mercury ≤1 mg/kg 
Arsenic ≤2 mg/kg 
Lead ≤2 mg/kg
Oxalic acid ≤0.2%
Loss   on drying ≤0.1%
Sulphated ash ≤ 0.1%
Residual solvents (as methanol) ≤ **0  mg/kg 
Total  plate count (cfu/g) ≤ ***0
Yeasts  & molds (cfu/g) ≤ **0  
Escherichia.  Coli/g  Absence 
Salmonella/  *5g  Absence 
Staphylococcus aureus/ *5g  Absence 

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至:

danhua < Sanmik Group Limited >

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