Customization: | Available |
---|---|
CAS No.: | 70356-09-1 |
Appearance: | White Fine Powder |
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Item
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Standard
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Assay
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95.0%~105.0%
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Weight Loss
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≤ 0.5%
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Chromatographic Purity
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≤ 3.0%
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Total Impurities
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≤ 4.5%
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Concentration
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3% US); 5%(EC, AUS); 10%(JP)
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Certificate of Analysis
ANALYSIS | SPECIFICATION |
Assay | ≥99.5% HPLC |
Appearance | White powder |
Hydroquinone | Negative |
Melting Point | 203-206(±1)ºC |
Specific Optical Rotation | [a]20D= + 174.0°- +186.0° |
Infrared peak value | 1514cm-1; 1229 cm-1; 1215 cm-1; 1059 cm-1; 1034 cm-1 |
Solubility | Soluble in water, slightly soluble in ethanol |
Clarity | Solution should be clarify, none suspended matters |
PH(1% water solution) | 5.0-7.0 |
Loss on drying | ≤0.5% |
Residue on Ignition | ≤0.5% |
Heavy metals | ≤10ppm |
Lead | ≤2ppm |
Arsenic | ≤2ppm |
M | ≤1ppm |
Total Plate Count | ≤100cfu/g |
Total Yeast & Mold | ≤50cfu/g |
E.Coli | Negative |
Salmonella | Negative |
Staphylococcus | Negative |
Shipping Options as follows
EMS | Around 7-10 working days |
DHL | Around 3-5 working days |
Fedex | Around 4-6 working days |
TNT | Around 6-7 working days |
By Air | Around 5-7 working days |
By Sea | Around 15-30 working days |