Quercetin Dihydrate Powder
Primitive plants botanical name:Sophora japonica L.
Appearance:Green yellow powder to Yellow powder
Characteristic:Natural extraction source, non fermentation method, non chemical synthesis source
CAS No.:117-39-5
Specification&Content:95% Quercetin dihydrate,98% anhydrous quercetin
Part Used:Flowers and Buds
Active ingredients:Quercetin Noted:Except Quercetin dihydrate, We also have anhydrous quercetin in stock
Particle size:80mesh
Package :1kg/Foil bag, 25kgs/Drum (Two plastic-bags inside with Paper-drums),Or as per customer's requirements.)
Delivery time: 4-8days.
Sample: Free Sample Available
Online Transaction :Accepted
Certificate:ISO/HALAL/KOSHER
- Product Description
Quercetin Dihydrate Powder Manufacturer and Supplier
We specialize in natural plant extracts with over 18 years of expertise. Our Quercetin Dihydrate Powder features ≥95% purity (HPLC tested) and is extracted fromSophora japonica L.flower buds using non-synthetic methods.
With an annual production capacity exceeding 200 MT across 4 dedicated production lines, we ensure consistent quality and reliable supply. Our facility spans 150 m² and operates under FDA, HACCP, and ISO certifications. The dihydrate form (CAS No. 6151-25-3, molecular weight 338.27 g/mol) offers superior storage stability with 9-12% Loss on Drying. We deliver globally within 4-8 days, providing you with a dependable source for your formulation needs.





Why Choose Us?
18+ A long time of Fabricating Excellence
Since 2008, we've built profound mastery in botanical extraction innovation. Our group gets it the basic quality parameters you need.
Certified Quality Standards
You pick up peace of intellect with our FDA enrollment, HACCP, and ISO certifications. Each bunch experiences thorough HPLC testing to ensure virtue consistency.
Stable Supply Capacity
Our 200+ MT yearly yield guarantees you never confront supply interferences. Four generation lines keep up persistent accessibility for your bulk orders.
Competitive & Transparent
We work on fair estimating with no covered up costs. You get point by point COA documentation with each shipment.
Free Tests & Quick Response
Test our quality risk-free with complimentary tests. Our deals group reacts to your request inside 24 hours at sales@hisybio.com.






Specification Sheet
Product Name | Quercetin/Quercetin dihydrate |
Primitive plants botanical name | Sophora japonica L. |
Appearance | Green yellow powder to Yellow powder |
CAS No. | 117-39-5 |
Specification&Content | 95% Quercetin dihydrate,98% anhydrous quercetin |
Part Used | Flowers and Buds |
Active ingredients | Quercetin |
Particle size | 80mesh |
Taste | Characteristic |
Moisture | 5%max |
Ash | 1%max |
Heavy metal | 10ppm max |
Pesticides | Negative |
Total Plate Count | 1000cfu/g max |
Yeast / Mold | 100cfu/g max |
E. Coli | Negative |
Salmonella | Negative |
Test Method | HPLC,UV,TLC |
Certificate | ISO/HALAL/KOSHER |
Customization | Acceptable |
COA/MSDS/TDS | Available |
MOQ | Any order quantity is welcome |
Package | 1kg/Foil bag, 25kgs/Drum (Two plastic-bags inside with Paper-drums), Or as per customer's requirements.) |
Place of Origin | Xi'an ,China |
Grade | Food Grade |
Supply Ability | 400kg/month |
Sample | Freely Offered |
Delivery Method | DHL/ FedEx/ UPS/EMS or By air/ By sea |
Shelf Life | 2 years under well storage situation. |
Storage | Store in cool & dry place. Keep away from strong light and heat. |
Supplier | Shaanxi Hisy Biotechnology Co., ltd. |
Product Process
Our product undergoes a meticulous production process. We start with carefully selected raw materials, followed by extraction, purification, and crystallization. The powder is then dried under controlled conditions to ensure optimal moisture content. Finally, it's rigorously tested to meet our high-quality standards before packaging.

Benefits for Global Buyers
Regulatory Compliance Made Easy
Our products meet USP and EP monograph standards. You receive all documentation needed for smooth customs clearance and regulatory approval.
Formulation Flexibility
The powder's 80-mesh particle size ensures excellent compressibility for tablets and uniform dispersion in capsules. You achieve consistent dosing across production batches.
Extended Shelf Life
Unlike anhydrous forms, Quercetin Dihydrate Powder resists humidity fluctuations. Your finished products maintain label claim potency for 24+ months.
Cost-Effective Bulk Pricing
We offer competitive MOQs with volume discounts. You optimize procurement costs without sacrificing quality.
Technical Support
Our R&D team assists with formulation challenges. You benefit from our experience in immune support blends, pet nutrition, and cosmetic applications.

Quercetin Dihydrate Powder Benefits
Capable Antioxidant Protection
As a bioflavonoid polyphenol, it conveys remarkable free-radical rummaging capability. Your clients advantage from cellular assurance against oxidative stress.
Immune Framework Support
It capacities as a zinc ionophore, encouraging zinc transport into cells. This instrument fortifies resistant defense details naturally.
Anti-Inflammatory Properties
The compound tweaks NF-κB pathways, lessening fiery reactions. Your joint wellbeing and pet care items pick up science-backed efficacy.
Histamine Regulation
It acts as a normal histamine enemy. This makes it important for regular wellness formulations.
Skin Wellbeing Enhancement
In restorative applications, it shields against UV harm and avoids oxidation-induced browning. Your anti-aging serums keep up soundness and viability.

How To Use?
Nutraceutical Supplements
Recommended dose: 500-1000 mg day by day in capsules or tablets. Combine with Zinc and Vitamin C for safe defense stacks. The steady precious stone structure anticipates debasement in both softgels and hard-shell formats.
Functional Pet Nutrition
Incorporate 50-100 mg per serving in hypoallergenic pet nourishments or joint back chews. Blend with tastefulness enhancers to veil the characteristic sharp taste. This makes a difference oversee canine atopic dermatitis effectively.
Cosmetic Formulations
Add 0.5-2% concentration to serums, creams, or emulsion bases. Guarantee pH alteration to soluble extend for dissolvability. The dihydrate shape anticipates oxidation browning in wrapped up products.
Always conduct solidness testing with your particular definition framework. Store in cool, dry conditions absent from coordinate light.


Quality Assurance
Batch-to-Batch Consistency
You get uniform molecule estimate dispersion and immaculateness levels over orders. Our quality control framework minimizes variety in follow pollutions like kaempferol and isorhamnetin.
Traceability System
Every clump interfaces to particular crude fabric parcels. You can follow from wrapped up item back to source development for total supply chain visibility.
Third-Party Testing
We welcome free lab confirmation. Our item reliably passes outside reviews for overwhelming metals, pesticides, and microbiological safety.
Temperature-Controlled Storage
Your item keeps up keenness in our climate-controlled stockrooms. This anticipates dampness assimilation and jam the basic 9-12% LOD determination.


OEM/ODM Services
Custom Detailing Development
Share your target profile, and we'll create models. Our R&D group optimizes proportions for safe mixes, beauty-from-within items, or pet wellness formulas.
Private Labeling
You get wrapped up items with your brand personality. We handle everything from detailing to bundling plan consultation.
Flexible Bundling Options
Choose from 1kg thwart sacks to 25kg drums, or indicate custom sizes. We suit both test runs and commercial-scale production.
Contract Manufacturing
Leverage our 200+ MT capacity for your item line. You decrease capital venture whereas keeping up quality control through our certified forms.

Packaging and Delivery
Standard Packaging:
· 1kg per foil bag for small orders
· 25kg per fiber drum with double plastic-bag lining
· Custom packaging available upon request
Delivery Timeline:4-8 days globally
Shipping Methods:Air freight, sea freight, or express courier
Free Sample:Available for quality evaluation
All packages include proper labeling, COA, and handling instructions to ensure your material arrives in optimal condition.


FAQ
Q: What's the contrast between dihydrate and anhydrous quercetin?
A: The dihydrate shape contains two water atoms (9-12% LOD), advertising superior capacity steadiness. Anhydrous has <4% LOD but is more hygroscopic. We stock both forms.
Q: Can I get tests some time recently bulk ordering?
A: Yes, we give free tests up to 50g. You as it were cover shipping costs for assessment purposes.
Q: What documentation do you provide?
A: Each shipment incorporates COA, MSDS, allergen articulation, non-GMO statement, and certificates (ISO/HALAL/KOSHER).
Q: What's your least arrange quantity?
A: Our standard MOQ is 25kg, but we suit littler amounts for trial orders.
Q: How do you guarantee steady quality?
A: Each clump experiences HPLC testing, molecule measure examination, and microbiology screening. We keep up strict SOPs over all generation stages.
Contact Us
Ready to secure your supply of premium Quercetin Dihydrate Powder? Our team is here to support your formulation success.
Email: sales@hisybio.com

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