Bulk Cosmetic Grade 99% Alpha, Beta Arbutin Powder
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498
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4.1(6)
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Product Name
Bulk Cosmetic Grade 99% Alpha, Beta Arbutin Powder
Substance
Manufacturer(s)
Specifications
- IUPAC Name: (2R,3S,4S,5R,6S)-2-(hydroxymethyl)-6-(4-hydroxyphenoxy)oxane-3,4,5-triol
- CAS Number: 497-76-7
- Chemical Formula: C12H16O7
- Molecular Weight: 272.25
- EC Number: 207-850-3
- Assay: ≥99.5%
- Appearance: White fine powder
- Melting point: 199~201±0.5℃
- Specific optical rotation: -66±2°
- Solubility: Soluble in water, slightly soluble in ethanol
- Clarity: Solution should be clarify, none suspended matters
- Loss on Drying: ≤0.5%
- Residue on ignition: ≤0.5%
- Heavy Metals: ≤10ppm
- Pb: ≤2ppm
- As: ≤2ppm
- Hg: ≤1ppm
- Total Plate Count: ≤300cfu/g
- Total Yeast & Mold: ≤50cfu/g
- E.Coli: Negative
- Salmonella: Negative
- Staphylococcus: Negative
- Arsenic: <2ppm
- Infrared characteristic peak: 1515cm-11220cm-11050cm-1±(5~8)cm-1
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