Riboflavin (Ph. Eur., USP) pure, pharma grade

Riboflavin (Ph. Eur., USP) pure, pharma grade
Content: 250 GRM
Physical Description:
Solid
Specification: Assay (UV, dried subst.)@98.0 - 102.0 %§a20°C/D; 0.5 %, 0.05 N NaOH, dried subst.@-115° - -135°§Identity@passes test§Loss on drying@max. 1.5 %§Sulfated ash@max. 0.1 %§A373 nm / A267 nm@0.31 - 0.33§A444 nm / A267 nm@0.36 - 0.39§Absorption maxima (223, 267, 373, 444 nm)@passes test§Impurity A (HPLC)@max. 0.025 %§Impurity B (HPLC)@max. 0.20 %§Impurity C (HPLC)@max. 0.20 %§Impurity D (HPLC)@max. 0.20 %§Related substances impurities (total) (HPLC)@max. 0.5 %§Largest unspecified impurity (HPLC)@max. 0.10 %§Lumiflavin (UV)@passes test