Riboflavin CAS: 83-88-5 CAS NO.83-88-5

items

limits

results

appearance

orange yellow crystalline powder

conform

indentification

positive

conform

acidity or alkalinity

check the color of the test solution

after adding the respective solutions

conform

lumiflavin

absorbance of the filtrate at 440nm

does not exceed 0.025(usp);

0.009

absorbance

0.31 – 0.33 a375nm/a267nm

0.36 – 0.39 a444nm/a267nm

0.32/0.38

partical size

100% pass 60 mesh

conform

specific rotation

between-115°and-135°(ep/bp/usp)

121°(usp)

loss on drying

≤1.5%

0.8%

heavy metals

<10ppm

conform

residue on ignition

≤0.03%(usp)

0.1%

organic volatile impurities

method iv<467>(usp)

conform

assay(on dried basis)

98.0% - 102.0%(usp)

101.85%