SD Alcohol-40 (SD Alcohol 40, SD Alcohol 40B, Denatured Alcohol, Alcohol Denat, Dehydrated Ethanol, Alcohol Denatured) 变性酒精, 变性乙醇, SD 乙醇 40, SD 乙醇 40-B Cas No：64-17-5
为确保用于化妆品中之酒精无法转移为其他用途，因此经过特殊程序处理(加入不可食用成份)后之酒精，又称为 SD Alcohol (Specially Denatured alcohol)，主要为宣告其不可用以饮用，而在欧洲地区为了适用于国际名称惯例将其命名为 Alcohol Denat[1]。 SD Alcohol 仍然为酒精成份，只是据说因为经过处理，其蒸发速度较快，也因此能将化妆品的香味更快散逸而出，且停留于肌肤的时间也较短[1]。 以常见添加物(变性剂)而言，使用t-Butyl alcohol、denatonium benzoate、diethyl phthalate、methyl alcohol制成的变性酒精，安全性优于使用quassin、brucine、brucine sulfate者。 由于其刺激性之考量，虽具有良好之辅助卸妆效力，但不宜经常出现在卸妆类产品中，拒绝指数为 3/5(越高越不好)[2]，可让其他成份感觉清爽、不黏腻又好推匀，但会渗入健康细胞中，溶解表皮脂质，长期使用会造成皮肤逐渐黯淡无光泽[2]。 [1] James Whittall, MenEssentials President, "Alcohol Anonymous", 2004/11 [2] 张丽卿，『优质保养品选择策略』，联经出版社，2003/07/10。 本资料可引用于任何用途，但须注明出自 CosDNA，并提供连结 http://www.cosdna.com/ 修訂:2007-10-22
asuracc
发表于：2010-06-01 19:06
There are several grades of denatured alcohol, but the denaturants used are generally similar. The formulation for completely denatured alcohol, according to British regulations is typical:
Completely denatured alcohol must be made in accordance with the following formulation: with every 90 parts by volume of alcohol mix 9.5 parts by volume of methanol or a substitute for methanol and 0.5 parts by volume of crude pyridine, and to the resulting mixture add mineral naphtha (petroleum oil) in the proportion of 3.75 litres to every 1000 litres of the mixture and synthetic organic dyestuff (methyl violet) in the proportion of 1.5 grams to every 1000 litres of the mixture. |
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