Ascorbic Acid

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Identification:

Product Name: Vitamin C

CAS : 50-81-7

Synonyms : L-Ascorbic acid; Vitamin C; L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone

Molecular Formula : C6H8O6

Molecular Weight : 176.12

EINECS : 200-066-2

Properties：

Melting point:190-194 °C (dec.)

alpha:20.5 º (c=10,H2O)

Boiling point:227.71°C (rough estimate)

Density:1,65 g/cm3

Refractive index:21 ° (C=10, H2O)

FEMA:2109 | ASCORBIC ACID

Storage temp.:0-6°C

Solubility;H2O: 50 mg/mL at 20 °C, clear, nearly colorless

Form:powder

pka:4.04, 11.7(at 25℃)

Color:white to slightly yellow

PH:1.0 - 2.5 (25℃, 176g/L in water)

Optical activity:[α]25/D 19.0 to 23.0°, c = 10% in H2O

Water Solubility:333 g/L (20 ºC)

Specification:

Appearance:White or almost white, crystalline powder or colorless crystals

Melting point:About 190℃, with decomposition

Infrared absorption spectrum:Infrared absorption spectrum accord with the reference spectrum of ascorbic acid CRS

PH (with 5% water solution):2.1-2.6

PH (with 2% water solution):2.4-2.8

Appearance of solution:Clarity: clear: Color: ≤BY2

Specific optical rotation:+20.5º to +21.5º

Loss on drying:0.4% max

Impurity E:0.2% max

Related substance:

Impurity C: ≤0.15%

Impurity D: ≤0.15%

Unspecified impurities: ≤0.10%

Total impurities: ≤0.2%

Copper:5.0ppm max

Iron:2.0ppm max

Arsenic:3.0ppm max

Lead:2.0ppm max

Mercury:1.0ppm max

Cadmium:1.0ppm max

Heavy metals:10ppm max

Sulphated ash:0.1% max

Residual solvents:Meets requirement

Assay:99.0% to 100.5%

Product Package:

25kg/carton, or according to the requirements of the customers.

Product Storage:

Put in a sealed, dry and ventilated place, Guard Against Fire.

Application:

Synthetic medicinal vitamin C is identical with natural vitamin C.The product can promote the formation of folate into tetrahydrofolate, which is conducive to the synthesis of nucleic acid and the formation of red blood cells.Can also make the reduction of ferric iron ions to ferric iron ions, which is easy to be absorbed by the body, but also conducive to the generation of cells.

Some photos of shipment: