Quercetin HPLC95%UV98%
Quercetin,another name:Sophora Japonica Extract.
【Physical character】Yellow powder or granular,slightly soluble in water.
【Main specification】
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Assay: |
HPLC95% |
UV98% |
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Specification: |
Dihydrate （9.0% ~ 12.0%） |
Anhydrate （≤4.0%） |
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Appearance: |
Powder |
Granular |
【Botanical Source】 Sophora Japonica
Related products
【Function & Application】
1.Enhances capillary resistance, reduces capillary brittleness,lowers blood lipids.
2.A natural plant dyestuff. It can be used as a medium for wool and cotton, yellow with aluminum salt, olive yellow with chromium salt, orange with tin salt and olive green with iron salt.
【CAS NO.】6151-25-3
【Molecular Formula 】C15H10O7
【Packaging】
Net weight ≤5kg, PE bag sealed, pack in Carton.
Net weight ≥5kg≤25kg, PE bag sealed,pack in Fibre Drum.
【Storage and transportation requirements】
Keep far away from fire and sunlight, dampness and keep in seal.Don't store and transport with toxic and harmful goods.
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TESTITEM |
STANDARD |
RESULT |
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Appearance |
Yellow powder or granular |
Complies (Visual) |
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Melting point |
305-315℃ |
Complies (Melting point apparatus) |
|
Identification |
Must Positive |
Complies |
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Loss on drying |
9.0%---12.0% |
Complies |
|
Residue on ignition |
≤0.5% |
Complies |
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Mesh size |
100% pass 100 mesh |
Complies |
|
Assay |
≥95% |
96.5%/99.2% (HPLC/UV) |
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HEAVY METAL |
STANDARD |
RESULT(ICP-MS) |
|
Lead |
≤3ppm |
Complies |
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Cadmium |
≤1ppm |
Complies |
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Mercury |
≤0.1ppm |
Complies |
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Arsenic |
≤1ppm |
Complies |
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MICROBIOLOGICAL TEST |
STANDARD |
RESULT |
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Total microbial count |
≤1000cfu/g |
Complies |
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Yeast & mold |
≤100cfu/g |
Complies |
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E.Coli |
Negative |
Negative |
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Salmonella |
Negative |
Negative |
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Other |
STANDARD |
RESULT |
|
Shelf life |
2 Years |
Complies |