Product Name: Quercetin Dihydrate

Botanical source : Sophorae Japonica

Part of plant used : Flower

CAS #:6151-25-3

TEST

 SPECIFICATION 5

Test Method

6Appearance

Identification

Melting point

Particle size

Reducing sugars

Sulfate

Chloride

Bulk density

Tapped Density

Heavy metals

-Arsenic

-Mercury

-Cadmium

-Lead  

Sulphated Ash

Loss on drying

Assay by HPLC

     by UV

Yellow powder

Must positive

305℃—315℃

95% pass through Sieve # 80 mesh

Not be detected

≤1000ppm

≤1000ppm

≥0.20gm/cc

≥0.30gm/cc

≤10ppm

≤1ppm

≤0.1ppm

≤1ppm

≤3ppm

≤0.30%

≤12.0%

≥95.0%

98.0%～102%

Visual

Infrared Absorption

Melting point Apparatus

US Screen

Chemical reaction

AJ192

AJ192

CP2010

CP2010

Visual Colorimetry

AAS

AAS

AAS

AAS

CP2010

120℃

HPLC

UV

Microbiological test:

Total plate count

Mildew & Yeast

E.Coli

Salmonella

Coliforms

≤10000cfu/g

≤1000cfu/g

Negative

Negative

≤10cfu/g

AOAC966.23

FDABAM8^th

FDABAM8^th

FDABAM8^th

AOAC911.14