Description
COSMETIC ACTIVE
alpha-Arbutin 99% — Single Isomer Grade
alpha-Arbutin is the alpha anomer of the hydroquinone glucoside used in skin-brightening formulations. Buyers specify the alpha isomer specifically because the beta form behaves differently in formulation, so the isomeric ratio matters more than the headline purity.
COA-Backed Specification
| Identity | alpha-Arbutin (4-hydroxyphenyl alpha-D-glucopyranoside) |
|---|---|
| Plant part | Not applicable (biotransformation product) |
| Form and colour | White to off-white crystalline powder |
| Assay | alpha-Arbutin 99.0% |
| Method | HPLC |
| Particle size | 98% through 80 mesh |
| Loss on drying | Within the limits of the approved specification |
| Ash | Within the limits of the approved specification |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Shelf life | Two years when stored properly |
Limits shown are the agreed specification. Result values are issued on the batch-specific certificate of analysis.
Buyer Decision Guide
The number that decides whether a lot is usable is the alpha-to-beta ratio and the residual hydroquinone level, not the 99% figure alone.
- Isomeric purity: alpha form at 99.0%, with the beta isomer reported separately on the COA.
- Residual hydroquinone: declared per lot. This is the impurity cosmetic buyers screen first.
- Appearance: white crystalline powder. Off-white lots indicate oxidation during drying.
- Solubility: water-soluble; confirm the concentration your formula needs before ordering a bulk lot.
- Heavy metals: held within cosmetic-grade limits and reported per batch.
- Documentation: COA, specification sheet and SDS issued with each shipment.
How This Grade Differs
The site lists no arbutin grade at all, so this page introduces the alpha isomer directly. Do not substitute beta-arbutin without telling your customer: the INCI name is the same but the efficacy and stability profile are not.
Quality and Documentation
Released on a batch certificate covering assay, isomeric ratio, hydroquinone, heavy metals and microbiology.
Frequently Asked Questions
What links the quotation to the delivered material?
The specification figure (alpha-Arbutin 99.0%) and the batch number on the COA carry through from quotation to certificate.
What do you declare for moisture and ash?
Both are released against the limits on the approved specification; the measured result for your lot appears on its COA.
What assay does alpha-Arbutin Powder 99% carry on the certificate of analysis?
Assay alpha-Arbutin 99.0%, determined by HPLC.
Which plant part is alpha-Arbutin Powder 99% produced from?
The plant part declared on the specification is Not applicable (biotransformation product).
Does the percentage refer to one compound or to a group?
It refers to alpha-Arbutin 99.0%, calculated by HPLC on the basis stated on the COA.
What is the minimum order quantity?
The regular MOQ is typically 1 kg. An evaluation sample of 10-20 g can usually be arranged before a formal order, subject to stock.
How is the material shipped?
Air and sea freight are both arranged, with the mode chosen against volume, destination and required date. Documents and the HS code are issued with the shipping instructions.
What is the usual lead time?
Regular production normally takes 7-15 working days after deposit, depending on stock, volume, testing and customisation requirements.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
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