Complaint
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
Application
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.
Technical Specification:
| 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 | |
Package :
Delivery:Sea/Air Shipping & International Express
Shipping Time:15 working days 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
FAQ
Q&A
Q1: How to confirm the Product Quality before placing orders?
A: By sending you our available samples.
Or if you have special requirement on the goods, we can prepare samples according to your requirement for your confirmation.
Q2: Can you supply free samples?
A: Yes, we can provide some free sample, but the shipping cost should be on the customers' account. You can either pay the shipping cost or arrange a courier to collect the samples.
Q3: What's the MOQ?
A: For the high value product, our MOQ starts from 1g and generally starts from 10g.
For other low value product, our MOQ starts from 100g and 1kg.
Q4: How to place order and make payment?
A: You can send our your Purchase order(if your company has), or just send a simple confirmation by email or by TradeManager, and we will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly.
Q5: How do you treat quality complaint?
A: All our products are strictly tested by our QC, and confirmed by QA; unqualified material will not be released to customer.
In case any quality problem is confirmed to be caused by us, we will replace the goods or refund your payment
