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Ascorbic acid/Vitamin C

  • CAS NO: 50-81-7
  • Purity: 99.0% min
  • Packaging: carton, 25kgs/drum,
  • Certifications : ISO,GMP,FDA,HACCP,HALAL,KOSHER
  • Price: Inquiry

Introduction: 

Vitamin C is a white monoclinic crystal or crystalline powder with melting point on 190 ℃ -192 ℃, no smell, sour, yellowish color after long time standing. The product is easily soluble in water, slightly soluble in ethanol, insoluble in ether, chloroform. The aqueous solution is acidic. 5% (W / V) aqueous solution PH2.1-2.6 (W / V), the rotation of aqueous solution is +20.5 ~ +21.5.

Specification:

Appearance
White or almost white, crystalline powder or colourless crystals
Melting Point
About 190℃, with decomposition
Identification
Positive reaction
pH (with 5% water solution)
2.1 ~ 2.6
pH (with 2% water solution)
2.4 ~ 2.8
Appearance of solution
Clarity : clear; Colour: ≤BY7
Specific optical rotation
+20.5º~ +21.5º
Loss on drying
≤0.4%
Impurity E
≤0.2%
Related substance

Impurity C: ≤0.15%

Impurity D: ≤0.15%

Unspecified impurities: ≤0.10%

Total impurities: ≤0.2%

Copper
≤5.0ppm
Iron
≤2.0ppm
Arsenic
≤3.0ppm
Lead
≤2.0ppm
Mercury
≤1.0ppm
Cadmium
≤1.0ppm
Heavy metals
≤10ppm
Sulphated ash
≤0.1%
Residual solvents
Meets the requirement
Assay
99.0%~100.5%


CAS NO.
50-81-7
Name
L(+)-Ascorbic acid
Alias
L-Ascorbic acid; Vitamin C; L-Threo-2,3,4,5,6-pentahydroxy-1-hexenoic acid-4-lactone
Formula
C6H8O6
Formula weight
176.12
Structural formula
Water solubility
333 g/L (20 ºC)
Specific rotatory power
20.5 º (c=10,H2O)
Melting point
190-192 ºC
Safety Description
S24/25   
  • Payment term: T/T 30% in advance and T/T 70% against copy of B/L. or 100% L/C at sight.
  • Shipment time: Within 3 weeks after confirming order.
  • We take photos of every stage of the process and can send them to you. Before we ship the container, you will have photos and lab test results.

Provide quality after-sale service once the container is received.

   In case the product is damaged, we will refund you or resend a new packaging.
   Also, if the goods are not as per your specification, we will callback the container at our cost, or compensate you as per our agreement.

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