Ascorbic acid Granular
Vitamin C, also known as ascorbic acid and L-ascorbic acid, is a vitamin found in food and used as a dietary supplement. As a supplement it is used to treat and prevent scurvy. Evidence does not support use in the general population for the prevention of the common cold.
|Appearance||White or almost white crystal or crystalline powder|
|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|
|Assay (as C 6H 8O6, %)||99.0 ~ 100.5|
|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|
|Staphylococcus aureus/ 25g||Absence|
【Introduction】 Ascorbic acid (Vitamin C) deficiencies are well documented. Deficiencies include internal and external hemorrhages, reduced bone collagen, lower jaw erosion, anemia, structural deformities, fin erosion, scoliosis (bent-back), poor growth, mortalities etc.