ALPHA LIPOIC ACID

ALPHA LIPOIC ACID ver.2.0 HS/SMPRODUCT STANDARDPRODUCT NAMEALPHA LIPOIC ACID-PC80(COSMETIC)This product contains minimum of 80.0% α-lipoic acidthioctic acid, 1,2-dithiolane-6-pentanoicacid).1.AppearanceSlight yellowish or yellowish crystalline powder.It has no smell or slightly unique smell.2.Certification TestThe maximum absorbance wavelength: 331335 nm.The minimum absorbance wave length: 278283 nm.3.Content of -Lipoic Acid Min. 80.0% (HPLC)4.Loss on Drying Max. 0.5 % (1g, 40, reduced pressure, P O , 4 hours)6.Ignition Residue Max. 0.1 %7.Purity Test(1)6,8-Epitrithiooctanoic acid Max. 0.1 % (HPLC)(2)Heavy Metals Max. 10 ppm (The Second Method)(3)Arsenic Max. 1 ppm (The Third Method, Apparatus B)8.Standard Plate Counts Max. 1 10 cfu/g (Analysis for Hygienic Chemists)9.Moulds and Yeasts Max. 1 10 cfu/g (Analysis for Hygienic Chemists)10.Coliforms Negative (Analysis for Hygienic Chemists)11.Residual Solvents(1)Ethanol Max. 0.1 % (GC)(2)Other SolventsAcetone Not detected (Max. 1 ppm) (GC/MS)Cyclohexane Not detected (Max. 1 ppm) (GC/MS)Dichloromethane Not detected (Max. 1 ppm) (GC/MS)Ethyl acetate Not detected (Max. 1 ppm) (GC/MS)Hexane Not detected (Max. 1 ppm) (GC/MS)MTBE Not detected (Max. 1 ppm) (GC/MS)Toluene Not detected (Max. 1 ppm) (GC/MS)12.Composition Ingredient ContentThioctic Acid 80%Hydrogenated Rapeseed Oil 20%100%Ref: The Japanese Standards of Cosmetic Ingredients.28