Download or read book GB T 4945 2002 Translated English of Chinese Standard GBT 4945 2002 GB T4945 2002 GBT4945 2002 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2015-06-28 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard is applicable to the determination of acid or basic constituents in petroleum products and lubricants soluble or nearly-soluble in mixtures of toluene and isopropyl alcohol. It is applicable for the determination of acids or bases whose dissociation constants in water are larger than 10(9); extremely weak acids or bases whose dissociation constants are smaller than 10(9). If their hydrolysis constants are larger than 10(9), then there is influence.