| Customization: | Available |
|---|---|
| Certification: | ISO, FDA |
| Assay Method: | HPLC, UV |
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Product name: Quercetin
Plant source: Sophora Japonica
Active ingredients: Quercetin
Specification: 95% 98% Test by HPLC
Appearance: light yellow fine powder
Testing method: UV/HPLC
CAS #: 117-39-5
Molecular Formula: C15H10O7
Molecular Mass: 302.24 g/mol
Extract Method: Grain alcohol
Applied in daily necessities field, aslo added into a large amount of oral cleaning products, such as dentifrices, mouthwash and tooth powder;
Applied in field, because of the function of inhibition and paralysis to sensory nerve endings, it canbe used as counter irritant.
| Item | Specification | Result |
| Assay | 95.0%-101.5% | 0.952 |
| (Anhydrous substance) | ||
| Appearance | Yellow, crystalline powder | Conforms |
| Solubility | Practically insoluble in water,Soluble in aqueous alkaline sol. | Conforms |
| Loss on drying | ≤12.0% | 0.1095 |
| Sulphated ash | ≤0.5% | 0.0014 |
| Melting point | 305-315°C | 310-312°C |
| Total Heavy Metals | ≤10ppm | Conforms |
| Pb | ≤3.0ppm | Conforms |
| As | ≤2.0ppm | Conforms |
| Hg | ≤0.1ppm | Conforms |
| Cd | ≤1.0ppm | Conforms |
| Microbiological | ||
| Total Plate Count | ≤1000cfu/g | Conforms |
| Total Yeast & Mould | ≤100cfu/g | Conforms |
| E. Coli | Negative | Negative |
| Salmonella | Negative | |
Packing & Delivery
Delivery:
Sea/Air Shipping & International Express
According to quantity and customer requirements
Shipping Time:
Within a week after payment
Package:
1-5kg/Aluminum foil bag, size: 22cm (Width)*32cm (Length)
15-25kg/Drum, size: 35cm (Diameter)*51cm (Height)
Storage:
Kept away from strong light and heat.
Shelf Life:
24 months
Our service
1.Free sample
2.Owning cultivation base as 100% Natural material stable source.
3.Manufacturer direct supply, Powerful R&D team and advanced test center
4.Leading plant extract manufacturer in China.
5.No excuse return of goods
6.OEM & ODM is available
Q1:Can i get some samples?
A: Yes, free samples are available, but the shipping cost be paid by our customers.
Q2:How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information.
Payment by Bank Transfer, Western Union or Paypal.
Q3:How to confirm the Product quality before place orders?
A: You can get free samples for some products, you only need to pay the shipping cost or arrange a courier to us and take the samples.
You can send us your product specifications and requests, we will manufacture the products according to your requests.
Q4: how about delivery lead time?
A:Delivery lead time: Within a week after payment confirmed.(Chinese holiday not included).
Q5:Is there a discount?
A:Different quantity has different discount
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