- Min.Order :0 Metric Ton
- Purity: 99.73%
Keywords
Quercetin Sophora Japonica L. 117-39-5
Quick Details
- Appearance:Fine Powder/Yellow, crystalline powder
- Application:Quercetin soluble in glacial acetic acid, alkaline solution yellow, almost insoluble in water, ethanol solution;Taste very bitter.Can be used as a drug, has a good expectorant, cough, and there was a
- PackAge:
- ProductionCapacity:|Metric Ton|Day
- Storage:Store in Cool & dry place Keep away from strong light and heat
- Transportation:
Superiority:
high purity with good service and competitive price
Details:
|
Item |
Specifiaction |
Result |
|
Assay |
|
|
|
Assay (anhydrous substance) UV |
99% |
99.73% |
|
Physical Tests |
||
|
Appearance： |
Fine Powder |
Complies |
|
Identification |
Must positive |
Complies |
|
Color |
Yellow, crystalline powder |
Complies |
|
Solubility |
Practically insoluble in water |
Complies |
|
Soluble in aqueous alkaline sol. |
Complies |
|
|
Melting point |
305-315℃ |
310℃ |
|
Odor |
Characteristic |
Complies |
|
Taste |
Characteristic |
Complies |
|
Particle Size |
100% Pass 100 Mesh |
Complies |
|
Chemical Controls |
||
|
Loss On Drying |
9.0-12.0% |
10.2% |
|
Sulphated ash |
≤0.5% |
0.06% |
|
Heavy Metals |
≤10 ppm |
Complies |
|
Arsenic (As) |
< 2PPM |
Complies |
|
Lead (Pb) |
< 0.5PPM |
Complies |
|
Cadmium (Cd) |
< 0.5PPM |
Complies |
|
Mercury(Hg) |
< 0.5PPM |
Complies |
|
Solvents Resides |
0.01% Max |
Complies |
|
Microbiologicals |
||
|
Total Plate Count |
≤1000CFU/g |
Complies |
|
Yeast & mold |
≤100CFU/g |
Complies |
|
E.coli |
Negative |
Negative |
|
Salimonella |
Negative |
Negative |
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