USD $5.00-10.00 / Gram
USD $1.00-10.00 / Kilogram
USD $5.00-10.00 / Gram
USD $2.00-10.00 / Kilogram
USD $2.00-10.00 / Kilogram
USD $5.00-10.00 / Gram
USD $8.20-8.80 / Kilogram
USD $1.00-10.00 / Kilogram
USD $1.00-10.00 / Kilogram
food grade vitamin b2, riboflavin cas 83-88-5
product description:
1) specification: bp/usp
2) cas no.: 83-88-5
3) function: vitamin b2, also known as riboflavin, is an easily absorbed micronutrient with a key role in maintaining health in humans and animals. it is the central component of the cofactors fad and fmn, and is required by all flavoproteins . as such, vitamin b2 is required for a wide variety of cellular processes. like the other b vitamins, it plays a key role in energy metabolism, and for the metabolism of fats, ketone bodies, carbohydrates, and proteins.
quality standard:
test items | specifications | results |
appearance | orange yellow crystalline powder | meets |
identification | positive | meets |
acidity or alkalinity | check the color of the test solution after adding the respective solutions | meets |
lumiflavin | absorbance of the filtrate at 440nm does not exceed 0.025(usp);not more intense than by6(ep/bp | 0.009 meets |
absorbance | 0.31-0.33 a373nm/a267nm 0.36-0.39 a444nm/a267nm | 0.32 ,0.38 |
particla size | 100% passes through 80 mesh sieve | meets |
specific rotation | between-115° and 135° (ep/bp/usp) | -127° |
loss on drying | ≤1.5% | 0.4% |
heavy metals | <10ppm | meets |
residue on ignition | ≤0.3%(usp) ≤0.1%(ep/bp) | 0.1% |
residual solvents | method iv <467> (usp) | meets |
assay(on dried basis) | 98.0%-102.0%(usp) 97.0%-103.0%(ep/bp ) | 100.4% |