info@mixfoodgroup.com
86 15221870316
As a professional Ascorbic Acid (Vitamin C) supplier and manufacturer, Mixfood Biotech Corporation has been supplying and exporting Ascorbic Acid (Vitamin C) from China for almost 10 years, please be assured to buy Ascorbic Acid (Vitamin C) at Mixfood Biotech. Any inquiries and problems please feel free to send emails to us via info@mixfoodgroup.com, we will reply to you within 1 working day.
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°.
|
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 |
Name: Mixfood Sales
Mobile：86 15221870316
Tel：86 15221870316
Whatsapp：86 15221870316
Email：info@mixfoodgroup.com
Add：Building 1, 385 Yubei Road, Shanghai, China
