Description
COA-BACKED NUTRITIONAL INGREDIENT
Vitamin B2 (Riboflavin) for B2B Fortification
Vitamin B2 (Riboflavin) is supplied for B2B fortification and premix projects. Specification centres on the declared potency, the carrier system and the stability behaviour in your finished format.
COA-Backed Specification
| Identity | Vitamin B2 (Riboflavin) |
|---|---|
| CAS No. | 83-88-5 |
| Form and colour | Fine yellow to orange-yellow crystalline powder |
| Assay | 98.0%-101.0% on dried basis |
| Method | HPLC |
| Particle size | 98% through 80 mesh |
| Loss on drying | <=5.0% |
| Ash | <=5.0% |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Representative batch | LXVC260225 |
| Manufacture date | 25 Feb 2026 |
| Shelf life | Two years when stored properly |
Representative values do not replace the current shipment COA.
Buyer Decision Guide
Vitamin grades are specified by potency, carrier and purity, and the same vitamin name can cover several physical forms. Confirm the exact form and the analytical method before comparing quotations; overage and stability requirements are project-specific.
- Confirm the exact physical form and carrier
- Check declared potency and the assay method
- Review stability and overage needs for your format
- Confirm light, heat and oxygen sensitivity in handling
How This Grade Differs
Vitamin B2 (Riboflavin) must be compared on physical form, carrier and declared potency rather than on the vitamin name alone. Powder, oil, crystal and diluted forms behave differently in blending, dosing and shelf life.
Compare these related grades before approval:
For a substitution review, compare riboflavin identity, the 98.0%-101.0% HPLC assay on a dried basis, crystalline powder form and the current offered-batch COA.
Private-label and OEM vitamin B2 supply
Vitamin B2 is supplied for private-label and OEM nutrition projects as well as for direct formulation. The grade is riboflavin at 98.0%-101.0% on a dried basis, released by HPLC, so a private-label specification can start from a documented assay rather than a marketing claim.
What can be agreed for a private-label run:
- the assay and particle size, against the agreed written specification; the current reference is 98% through 80 mesh;
- packing: a 1 kg foil bag, or a 25 kg fibre drum with an inner food-grade liner;
- custom packing and label arrangements, confirmed in writing before production;
- documents per batch: certificate of analysis, specification sheet and the export documents the destination market requires.
Private-label and custom-packing requests are reviewed case by case against production feasibility, quantity and the agreed specification. Typical lead time on the current packing arrangement is 7-15 working days.
Application Areas
- Vitamin premixes and dry blends
- Tablets, capsules and softgels
- Functional beverages and fortified foods
- Private-label nutrition projects
Packaging and Delivery
- Evaluation sample typically 10-20 g, subject to stock
- Regular MOQ typically 1 kg
- 1 kg foil bag or 25 kg fibre drum with inner food-grade liner
- Custom packing and private-label options subject to confirmation
- Typical lead time 7-15 working days after deposit
Quality and Documentation
Representative batch LXVC260225 supports the specification table above. Use the cited record for preliminary comparison and request the offered-lot COA for final technical approval. Batch COA, specification sheet, agreed third-party testing and export documents are available for buyer verification.
Frequently Asked Questions
What assay does Vitamin B2 Powder 98% carry on the certificate of analysis?
Assay 98.0%-101.0% on dried basis, determined by HPLC.
How is appearance checked?
Fine yellow to orange-yellow crystalline powder, compared against a retained sample from the approved batch.
How long can we hold stock before use?
Two years when stored properly from the manufacture date when the pack stays sealed and dry.
How do you control related substances?
Related substances are integrated on the same HPLC run used for the 98.0%-101.0% on dried basis assay.
How is lot traceability handled?
Each lot keeps batch records and a retained sample, and the certificate for LXVC260225 carries the same batch reference used in the quotation.
Can I get a sample before placing the order?
Yes. An evaluation sample is normally available before a formal order. Sample quantity, courier account and destination are confirmed at the time of request.
Are you a manufacturer or a trading company?
LongBio is Shaanxi Longsheng Biotechnology Co., Ltd., a direct manufacturer of botanical extracts and functional ingredients integrating R&D, production and export support. Factory review can be arranged by video or an on-site visit.
Which documents come with the shipment?
Batch COA, specification sheet, agreed third-party testing where required, commercial invoice, packing list, certificate of origin and transport documents. The exact set is confirmed against the product and destination market.
Can vitamin B2 be supplied under private label?
Yes. Private-label and OEM projects are reviewed case by case against production feasibility, quantity and the agreed specification. Packing can be a 1 kg foil bag or a 25 kg fibre drum with an inner food-grade liner, and each batch ships with a certificate of analysis and a specification sheet.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
Get the current batch COA, a sample or a quotation
