of Chinese Stone Machinery
α Arbutin, White crystal powder, easily soluble in water,methanol,ethanol,propylene glycol, glycerin without precipitates. Alpha Arbutin also known as 4-Hydroxyphenyl-alpha-D-glucopyranoside, is mainly used to bind to tyrosinase of melanocytes in the skin and inhibit tyrosinase activity. It’s a popular whitening agent in Japan and other asian countries. It mainly use in cream,essence,facial mask for whiten skin and frechles removal. And the ability of α-arbutin to inhibit this enzyme ( whitening effect) is 10 to 15 times than of β-arbutin.
①Alpha Arbutin crystal powder 98% HPLC
②Alpha Arbutin crystal 99.5% HPLC
❶α Arbutin acts as a whitening agent to reduce melanin in the skin.
❷α Arbutin can tighten pores and skin,it can also promote cell growth and help skin wounds heal.
❸α Arbutin also regard as antiseptic and anti-inflammatory ingredients.
Analysis Items | Specifications | Methods |
Active Ingredients Tests | ||
α-Arbutin | ≥99.5% | HPLC |
Hydroquinone | ≤1.00ppm | HPLC |
Physical Tests | ||
Appearance | White Crystal Powder | Visual |
Particle size | 90% pass 60mesh | Ch.P 2020 IV<0982> |
Melting Point | 202.0~210.0 ±0.5 ℃ | Ch.P 2020 IV<0612> |
Specific Optical Rotation | +174.0˚~+186.0˚ | Ch.P 2020 IV<0621> |
pH value (1% solution) | 5.0~7.0 | Ch.P 2020 IV<0631> |
Water contents | ≤0.5% | GB 5009.3 |
Total ash | ≤0.5% | GB 5009.4 |
Chemical Tests | ||
Heavy Metals | ≤50.00ppm | GB 5009.11 |
Arsenic <As> | ≤3.00ppm | GB 5009.11 |
Lead <Pb> | ≤5.00ppm | GB 5009.12 |
Cadmium<Cd> | ≤2.00ppm | GB 5009.15 |
Mercury <Hg> | ≤1.00ppm | GB 5009.17 |
Microbiological Tests | ||
Total Bacteria Counts | ≤300cfu/g | GB 4789.2 |
Yeast and Molds | ≤10cfu/g | GB 4789.15 |
Coliforms | ≤90MPN/100g | GB 4789.3 |
Salmonella | Negative | GB 4789.4 |
Staphylococcus aureus | Negative | GB 4789.10 |
Shigella | Negative | GB 4789.5 |
★ Full series of α-Arbutin with high purity 99.5% both powder and crystal form.
★ High purity α- Abutin and low Hydroquinone residue less than 0.1ppm even negative.
★ Standardized products, reasonable price, professional service is continuously provided.
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