Add: 8# Zhenxing road, Datong Industrial Park, Jiande city, Hangzhou city, Zhejiang province, China

Zip code: 311614

Tel: +86-571-58319696

Fax: +86-571-64571838

Natural calcium carbonate for Toothpaste

Standard: QB 2317-2007

Technical Index:

Detection Item	Index
Appearance	White powder, without grain and impurities
Carbonate identification	bubbles after add acetic acid
Identification of calcium	White precipitate, insoluble in 6N acetic acid, dissolved in hydrochloric acid
Loss on drying, %	0-2.0
Whiteness, degree	≥95.0
Purity (as CaCO₃)(dry)%	98.0-100.5
Acid insoluble, %	0-0.05
PH value	9.0-10.0
Amount of water absorption, mL/g	0.19-0.25
Sulfides ,%	0
Thionyl (reduced sulfur),, mg/kg	0-5
Arsenic (As), mg/kg	0-5
Heavy metals , mg/kg	0-15
Fe, mg/kg	0-200
Magnesium and alkali metal , %	0-1.5
Total number of bacterial cfu/g	≤100
Mold and yeast cfu/g	≤100
Fecal coliforms / cfu/g	Not detected
Staphylococcus aureus / cfu/g	Not detected
Pseudomonas/ cfu/g	Not detected

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