GB/T 5173-1995表面活性剂和洗涤剂　阴离子活性物的测定　直接两相滴定法.pdf

中华人民共和国国家标准

NationalStandardofthePeople'sRepublicofChina

GB/T5173-1995

ReplaceGB5173-1985

表面活性剂和洗涤剂阴离子活性物的测定直接两相滴定法

Surfaceactiveagentsanddetergents

—Determinationofanionic-activematterby

directtwo-phasetitrationprocedure

ApprovedonDec.08,1995ImplementedonAug.01,1996

ApprovedbyStateBureauofQualityTechnicalSupervision

1

Surfaceactiveagentsanddetergents

—Determinationofanionic-activematterby

directtwo-phasetitrationprocedure

ThisstandardisequivalenttointernationalstandardISO2271:1989Surfaceactiveagents-Detergents-

Determinationofanionic-activematterbymanualormechanicaldirecttwo-phasetitrationprocedure.

ThemanualtitrationmethodspecifiedinISO2271isadoptedonlyandethidiumbromideoniumisaddedinthemixedindicatorandisusedtogetherwiththedimidiumbromidemonohydrate,andincaseofarbitration,the

dimidiumbromidemonohydrateshallbeusedstill

1Subjectcontentsandapplicablescope

Thisstandardspecifiesthedeterminationofanionic-activematterbydirecttwo-phasetitrationprocedurein

surfaceactiveagentsanddetergents.

Thisstandardisapplicableofanalysisofalkylbenzenesulfonate,alkanesulfonate,alkylsulfate,alkylhydroxysulfate,alkylphenolsulfate,alcoholmethoxylethoxysulfate,dialkylsulfosuccinicsaltandotheranion

activesolidorliquidproductwithahydrophilicgroupineachmolecule.

Thisstandardisnotapplicableifcationicsurfaceactiveagentsarepresent.

Therelativemolecularweightofanionactivemattermustbeknownordeterminedinadvanceiftheanalysis

resultisexpressedbypercentagemasscontent.

NOTE:

1)Lowrelativemolecularmasssulfonatespresentashydrotropes(toluene,xylene)donotinterferewhenpresentinconcentrationsofupto15%(m/m)relativetotheactivematter.Athigherlevels,theirinfluence

shouldbeevaluatedinea