Preservatives
Ascorbic Acid
- HS Code: 293627
- CAS No:50-81-7
- QC:Haccp,Kosher,Halal,Iso
- Ascorbic Acid
- Product description: Ascorbic Acid
Ascorbic Acid is a white or slightly yellow crystals or powder,a little acid.m.p.190℃-192℃，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.
In the food industry,it can both use as nutrition-al supplements,supplementary VC in food processing,and also is good Antioxidants in food preservation,widely used in meat products,,fermented flour products,beer,tea dtinks, fruit juice,canned fruit,canned meat and so on;also commonly used in cosmetics,feed additives and other industrial areas.
ITEM
STANDARD
Appearance
White or almost white crystal or crystalline powder
Identification
Positive
Melting point
191 ℃ ~ 192℃
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 solution
Clear
Heavy metals
=<0.0003%
Assay (as C 6H 8O6, %)
99.0 ~ 100.5
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)
=< 500 mg/kg
Total plate count (cfu/g)
=< 1000
Yeasts & molds (cfu/g)
=< 100
Escherichia. Coli/g
Absence
Salmonella/ 25g
Absence
Staphylococcus aureus/ 25g
Absence
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