Certification: | RoHS, BRC, ISO, FDA, HACCP |
---|---|
Assay Method: | HPLC-MS, GPC, HPLC, UV |
Application Form: | Injection, Lotion, Suppository, Paste, Tablet, Capsule |
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Name: Vitamin C
Appearance: colorless crystal
Grade: Food Grade
Molecular Formula: C6H8O6
CAS No. 50-81-7
ENIECS NO. 200-066-2
Other name: Ascorbic Acid
Testing Item
|
Standard
|
Result
|
Assay
|
99.0%-100.5%
|
99.72%
|
Appearance
|
White or almost White
crystals Crystalline Powder |
pass
|
Solubity
|
Easily soluble in water
|
pass
|
Identification
|
Positive Reaction
|
Positive
|
Melting Point
|
About 190ºC
|
190.6 ºC
|
Copper
|
≤5ppm
|
<5ppm
|
Heavy Metals
|
≤10ppm
|
<10ppm
|
Mercury
|
≤0.1mg/kg
|
<0.1mg/kg
|
Lead
|
≤2mg/kg
|
<2mg/kg
|
Arsenic
|
≤3ppm
|
<3ppm
|
Oxalic Acid
|
≤0.2%
|
<0.2%
|
Iron
|
≤2ppm
|
<2ppm
|
Cadmium(Cd)
|
<1mg/kg
|
<1mg/kg
|
Impurity E
|
≤0.2%
|
<0.2%
|
Loss on Drying
|
≤0.4%
|
<0.4%
|
Sulphate Ash(Residue On Ignition)
|
≤0.1%
|
<0.1%
|
Specific Optical Rotation
|
+20.5°-+21.5°
|
21.08°
|