QualitycharacteristicsStandard1.AppearanceColorlessorslightlyyellow,transparentviscousliquidwithweaktypicalodor2.pHof5%solution5.5–7.53.Watercontent,wt.%,max.0.54.Sulphateashcontent,wt.%,max.0.15.Lossmassatdrying,%,max.3.06.FreeAceticAcidcontent,wt.%,max.0.0247.Hydroxylnumber,mgKOH/g260-2908.Mono-anddi-ethyleneglycolcontent,wt.%,max.0.259.Colorof25%watersolution,Hazen,max.2510.EthyleneOxidecontent,wt.%,max.0.0111.Ironcontent,wt.%,max.0.0001