Ascorbic acid - Yangzhou Chemical Co.,Ltd.

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    Ascorbic acid

  • Category:
    Food Additives
  • Browse number:
    414
  • Release time:
    2024-03-25 16:15:37
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Product Name

Ascorbic acid

CAS No.

50-81-7

Main Specification

ITEMSTANDARDAppearanceWhite or  almost  white crystal  or  crystalline powderIdentification  PositiveMelting point 191 °C  ~  192°C pH (5%,  w/v)  2.2 ~   2.5 pH (2%,w/v)  2.4 ~   2.8 Specific optical  rotation +20.5°  ~  +21.5°  Clarity  of  solutionClear Heavy metals≤0.0003% Assay (as C 6H 8O6, %) 99.0  ~  100.5 Copper≤3 mg/kgIron≤2 mg/kgMercury≤1 mg/kg Arsenic≤2 mg/kg Lead≤2 mg/kgOxalic acid≤0.2%Loss   on drying≤0.1%Sulphated ash≤ 0.1%Residual solvents (as methanol)≤ 500  mg/kg Total  plate count (cfu/g)≤ 1000Yeasts  & molds (cfu/g)≤ 100  Escherichia.  Coli/g Absence Salmonella/  25g Absence Staphylococcus aureus/ 25g Absence 



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