Riboflavin Vitamin B2 Powder Supplier
Bulk Riboflavin (Vitamin B2) crystalline powder for ingredient sourcing, with defined particle-size and analytical specifications supported by batch-specific COA data.
Riboflavin Vitamin B2 Product Overview
Riboflavin is Vitamin B2. Riboflavin is the unphosphorylated form of vitamin B2, with a distinct chemical identity and physical profile.
Riboflavin Identity & Physical Profile
Riboflavin has the molecular formula C17H20N4O6 and a molecular weight of approximately 376.36. It occurs as a yellow to orange-yellow crystalline powder and is very slightly soluble in water. Dry material is comparatively stable under diffused light, while riboflavin in solution is sensitive to light exposure.
C17H20N4O6
The molecular formula distinguishes standard Riboflavin from its phosphate sodium derivative.
Very Slightly Soluble in Water
Water solubility varies with crystalline structure; FCC reports approximately 1 g dissolving in 3,000 to 20,000 mL of water.
Light-Sensitive in Solution
Dry material is not affected by diffused light under the FCC description, while dissolved riboflavin deteriorates under light exposure.
Riboflavin Specification & Batch Results
Product acceptance criteria and certified batch results are presented side by side for direct review.
| Test Item | Specification | Batch Result |
|---|---|---|
| Identity & Physical Properties | ||
| Appearance | Orange-yellow crystalline powder | Meets |
| Identification | Intense yellowish-green fluorescence disappears upon addition of mineral acids or alkalies | Meets |
| Lumiflavin | Absorbance of filtrate at 440 nm does not exceed 0.025; not more intense than BY6 | Meets |
| Particle Size | 95% passes through 80 mesh sieve | Meets |
| Specific Rotation | −115° to −135° | −120° |
| Chemical Quality | ||
| Loss on Drying | ≤1.5% | 0.3% |
| Heavy Metals | <10 ppm | <10 ppm |
| Residue on Ignition | ≤0.3% (USP) | 0.06% |
| Assay | ||
| Riboflavin on Dried Basis | 98.0%–102.0% | 98.5% |
Riboflavin Raw Material Evaluation
Raw-material evaluation includes chemical identity, assay basis, physical specification and batch-specific analytical results. Particle size is controlled as a defined specification for this Riboflavin material.
Riboflavin vs. Riboflavin Sodium Phosphate
The two materials have different identities and different assay bases. The assay percentages should not be used as a direct purity comparison between the products.
| Selection Point | Riboflavin | Riboflavin Sodium Phosphate |
|---|---|---|
| Chemical form | Unphosphorylated Riboflavin | Phosphate sodium derivative |
| Water behavior in established physical-property data | Very slightly soluble | Water-soluble; FCC reports about 1 g in 30 mL |
| Moisture behavior | No hygroscopic designation used in the cited FCC description | Described by FCC as hygroscopic |
| Analytical profile in batch specification | Includes a defined particle-size requirement | Includes related substances, residual solvents and microbiological controls |
| Assay interpretation | Assay applies to standard Riboflavin | Assay is expressed as riboflavin content for the phosphate sodium material |
Riboflavin Packaging & Batch Traceability
Batch traceability includes manufacturing, release and expiry information together with packing details.
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