Synonyms: Vitamin B3
Chemical Name: Niacin
Molecular Formula: C6H5NO2
CAS: 59-67-6
Properties: white or light yellow crystal or crystalline powder. odorless or slightly smelly, slightly have acidic taste. pH value is 3.0–4.0 in 1% aqueous solution. Isoelectric point is 4.23–4.25. λmax is 261.5nm between pH value is 1.28–1.30. No moisture absorption. very stable in the dry state, and fairly stable in aqueous solution. Almost break down in acid or alkaline solution. Soluble in boiling water and boiling ethanol, as well as alkaline hydroxides and carbonates solution. Hardly soluble in ether.
Usage: nutrition supplement, and color fixative.
Application: used for fortified in health foods, or used as chromogen of meat products instead of nitrite (combination with vitamin C, dosage is 0.1%–0.02%)
Quality Standard: CP2005
|
item |
standard |
|
appearance |
white crystal or crystalline powder |
|
solubility |
match standard |
|
melting point (℃) |
234–238 |
|
identification |
positive reaction |
|
color of solution |
match standard |
|
chloride (%) |
0.02 max |
|
sulfate (%) |
0.02max |
|
loss on drying (%) |
0.5 max |
|
residue on ignition (%) |
0.1 max |
|
heavy metal (ppm) |
20 max |
|
content (%) |
99 min |
Packaging: 25KG / barrel
Transportation: avoid sun and rain, be transported as general chemicals but with no toxic, hazard materials.
Storage: stored in dry clean dark environment, and not be mixed with toxic substances to avoid contamination.
Shelf life: two years |
