100g/袋;500克/袋;1kg/袋;25千克/桶
Test Items | Specifications |
Appearance | White Crystals Or Crystalline Powder |
Identification | IR Spectrum |
Melting Point | 202~210℃ |
Clarity Of Water Solution | Transparent, Colorless, None Suspended Matters |
PH | 5.0~7.0 |
Specific Rotation | +175°~+185° |
Loss On Drying | ≤0.5% |
Residue On Ignition | ≤0.5% |
Hydroquinone | Negative |
Lead | ≤10mg/kg |
As | ≤2mg/kg |
Mercury | ≤1mg/kg |
Methanol | ≤2000mg/kg |
Aerobic Bacterial Count | ≤1000cfu/g |
Molds And Yeast Count | ≤100cfu/g |
Fecal Coliforms | Negative |
Staphylococcus Aureus | Negative |
Pseudomonas Aeruginosa | Negative |
Purity(HPLC) | ≥99.5% |
100g/袋;500克/袋;1kg/袋;25千克/桶
存放在阴凉、干燥、通风的地方。
2-8°C
减少黑色素、雀斑和美白化妆品原料
它可以帮助减少老年斑(棕色斑点)、雀斑和晒斑的出现
AA可以帮助减轻黑斑,减少紫色、红色或棕色痤疮疤痕的出现 ;