≥1 piece |
Food supplement manufacturers often use the term folate for something different from "pure" folic acid: in chemistry, folate refers to the deprotonated ion, and folic acid to the neutral molecule—which both coexist in water. The International Union of Pure and Applied Chemistry and the International Union of Biochemistry and Molecular Biology state that folate and folic acid are the preferred synonyms for pteroylglutamate and pteroylglutamic acid, respectively.[18] Folate indicates a collection of "folates" that is not chemically well-characterized, including other members of the family of pteroylglutamates, or mixtures of them, having various levels of reduction of the pteridine ring, one-carbon substitutions and different numbers of glutamate residues.
ITEM |
SPECIFICATION |
RESULT |
Appearance |
Yellow Or Orange Crystalline Powder, Almost Odorless |
Conform |
Identification Ultraviolet Absorption A256/A365 |
Between 2.80 And 3.00 |
2.87 |
Water |
Not More Than 8.5% |
8.00% |
Residue On Ignition |
Not More Than 0.3% |
0.10% |
Chromatographic Purity |
Not Greater Than 2.0% |
Conform |
Organic Volatile Impurities |
Meet The Requirements |
Conform |
Assay |
97.0~102.0% |
98.15% |