Help Global Chemical Trade Easier

Ascorbic acid

  • CAS NO: 50-81-7
  • Grade: food grade
  • Specs: powder
  • Packaging: 25kg/carton
  • Capacity: 3000MTS/month
  • Certifications : ISO,KOSHER,HALAL,BRC,HACCP
  • Price: Inquiry

Vitamin C is also called L- ascorbic acid. It is soluble in water, less soluble in ethanol, insoluble in chloroform, benzene, ether, petroleum ether, oil and other organic solvents, with acidity and reducing, there are four isomers, namely L-ascorbic acid, D-ascorbic acid, L-isoascorbic acid, D-isoascorbic acid.

Fruits and vegetables are rich in vitamin C, the main form of existence is L-ascorbic acid, its strongest efficacy, that is, commonly referred to as ascorbic acid. Under certain conditions, ascorbic acid can be oxidized to produce dehydroascorbic acid, L-dehydroascorbic acid can also be reduced in organisms, into L-ascorbic acid, this change is reversible, so L-dehydroascorbic acid still has biological activity. However, the activity of dehydroascorbic acid disappears when it is further oxidized to diketoglobituric acid, which is irreversible.

Test Items

Test Parameters

Test Result

Appearance

White or almost white crystals crystalline powder

Complies

Identification

Positive reaction

Positive

Metling Point()

About 190

191.0

PH(5%,W/V)

2.1~2.6

2.41

PH(2%,W/V)

2.4~2.8

2.42

Loss on Drying(%)

≤0.4

0.07

Cd(ppm)

≤1
<1

Arsenic(ppm)

≤3
<3

Lead(ppm)

≤2
<2

Copper(ppm)

≤5
<5

Heavy Metals(ppm)

≤10
<10

Iron(ppm)

≤2
<2

Mercury(ppm)

≤1
<1

Mesh

40~80Complies

Oxalic Acid(%)

≤0.2
<0.2

Sulphate Ash(Residue on Ignition)(%)

≤0.1
<0.1

Specific Optical Rotation

+20.5~+21.5

+20.81◦

Residual Solvents(ppm)

Methanol:NMT3000

<3000

Assay(%)

99.0~100.5

99.71

Conclusion:

Conform to BP2008/USP31/E300/FCCV.



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.

Send Your Message

Any question about this product, please feel free to contact.

Share This Product

Contacts
Rebecca
Tel: +86-532-8387-5218
Mobile: +86-198-5320-8343
Email: [email protected]