What Is L-Cystine 98% (Feed/)? Applications, Dosage, Alternatives & Specifications
Last updated: 2026-11-14 · CAS 56-89-3 · Food Grade
- Quick facts
- Name
- L-Cystine 98% (Feed/)
- CAS number
- 56-89-3
- Grade
- Food Grade
- Certifications
- ISO 9001 · ISO 22000 · HACCP · FAMI-QS · Kosher · Halal · GMP · SGS
- Application areas
- 6
- Documentation
- COA · TDS · SDS
Overview
L-Cystine 98% (Feed/Food Grade) is a premium-quality product supplied by ZEAL BIOTECH under strict quality management with full batch traceability. Sulfur amino acid supporting keratin (feathers, wool, hair, claws), disulfide cross-linking, glutathione/antioxidant defense and bile; spares methionine and supports feather/wool growth and skin/hoof quality; converted to cysteine in the body.
Applications
Vitamins & Multivitamins
Single vitamins and comprehensive multi formulas.
Minerals
Macro and trace minerals in well-absorbed forms.
Amino Acids & Peptides
Free-form amino acids and peptide ingredients.
Specialty Actives
CoQ10, PQQ, alpha-lipoic acid, carnitine and related ingredients.
Sports & Weight Management
Creatine, beta-alanine, pre-workout and weight-management blends.
Healthy Aging & Sleep
Melatonin, antioxidants, joint and longevity products.
Specification
| Item | Specification |
|---|---|
| Product Name | L-Cystine 98% (Feed/Food Grade) |
| CAS Number | 56-89-3 |
| Appearance | White crystalline powder, nearly insoluble in water |
| Grade | Food / Supplement Grade |
| Packaging | 25kg net fiber drum with PE liner |
| Shelf Life | 24 months |
Packaging & Storage
- Packing: 25kg net fiber drum with double PE liner.
- Sample: 100-500g free sample available.
- Storage: Keep in tightly closed packaging, cool, dry, well-ventilated. Protect from light and moisture.
- Shelf Life: 24 months from production date.
Quality & Certifications
Every batch tested by in-house QC lab. COA, TDS, SDS provided with each shipment.
Regulatory & Compliance
EU
Complies with EU regulations and FAMI-QS standards.
USA
Meets FDA and AAFCO requirements.
China
Registered under Chinese MOA regulations.
International
Kosher, Halal, ISO certified. FTA forms available.
Safety & Handling
- Hazard Class: Generally non-hazardous. Refer to SDS for details.
- Storage: Room temperature, dry, sealed. Avoid strong oxidizers.
- Transport: Non-dangerous goods. Standard sea/air freight.
- SDS: Available on request at sales@xadditive.cn.
Frequently asked questions
MOQ?
MOQ is 1kg for trial, 25kg for regular orders. Free samples available.
Shelf life?
24 months from production date when stored properly.
Certifications?
ISO 9001, ISO 22000, HACCP, FAMI-QS, Kosher, Halal, COA, SDS, TDS.
How to get quote?
Email sales@xadditive.cn with your requirement. Reply within 30 minutes.
Request a quote & COA
Ask for the current specification sheet, a COA sample and a bulk quotation — reply within 30 minutes on working days.