GB 50325-2020 民用建筑工程室内环境污染控制标准：英文

专用

人人文库

NATIONALSTANDARD

OFTHEPEOPLE'SREPUBLICOFCHINA

STANDARDFORINDOORENVIRONMENTAL

POLLUTIONCONTROLOF

CIVILBUILDINGENGINEERING

GB50325-2020

DevelopedbyTheMinistryofHousingandUrbanRuralDevelopment

-

ofthePeople'sRepublicofChina

ApprovedbyTheMinistryofHousingandUrbanRuralDevelopment

-

ofthePeople'sRepublicofChina

ImplementationDateAugust1，2020专用

人人文库

ChinaPlanningPress

Beijing2024

ChineseeditionfirstpublishedinthePeoplesRepublicofChinain2020

EnglisheditionfirstpublishedinthePeoplesRepublicofChinain2024

byChinaPlanningPress

th

4Floor，CTower，GuohongBuilding

No.A11，Muxidi-Beili，Xicheng专用District

Beijing，100038

www.jhpress.com

PrintedinChinabyBeijinghouchengzemingPrintingTechnologyCo.，Ltd

©2020bytheMinistry人人文库ofHousingandUrban-RuralDevelopmentof

thePeoplesRepublicofChina

Allrightsreserved.Nopartofthispublicationmaybereproducedortransmittedinanyformor

byanymeans，graphic，electronic，ormechanical，includingphotocopying，recording，

oranyinformationstorageandretrievalsystems，withoutwrittenpermissionofthepublisher.

Thisbookissoldsubjecttotheconditionthatitshallnot，bywayoftradeorotherwise，belent，

resold，hiredoutorotherwisecirculatedwithoutthepublisherspriorconsentinanyformof

blindingorcoverotherthanthatinwhichthisispublishedandwithoutasimilarcondition

includingthisconditionbeingimposedonthesubsequentpurchaser.

ISBN978-7-5182-1722-9

NOTICE

ThisstandardiswritteninChineseandEnglish.TheChinesetextshallbetakenastherulingone

intheeventofanyinconsistencybetweentheChinesetextandtheEnglishtext.

专用

人人文库

AnnouncementoftheMinistryofHousingandUrban-Rural

DevelopmentofthePeople'sRepublicofChina

No.46（2020）

AnnouncementoftheMinistryofHousingandUrbanRural

-

DevelopmentonPublishingtheNationalStandard

StandardforIndoorEnvironmentalPollutionControlof

CivilBuildingEngineering

StandardforIndoorEnvironmentalPollutionControlofCivilBuildingEngineeringhasbeen

approvedasanationalstandardwithaserialnumberofGB50325-2020，andwillbeimplementedon

August1，2020.Inthisstandard，Articles3.1.1，3.1.2，3.6.1，4.1.1，4.2.4，4.2.5，4.2.6，4.3.1，4.3.6，

5.2.1，5.2.3，5.2.5，5.2.6，5.3.3，5.3.6，6.0.4，6.0.14，and6.0.23aremandatoryonesandmustbe

implementedstrictly.TheformerCodeforIndoorEnvironmental专用PollutionControlofCivilBuilding

EngineeringGB50325-2010willbecancelledandreplacedaccordingly.

ThisstandardisopentothepubliconthewebsiteoftheMinistryofHousingandUrbanRural

-

Development（www.mohurd.gov.cn），andispublishedanddistributedbytheChinaPlanningPress

undertheorganizationoftheResearchInstituteofStandardsandNormsoftheMinistryofHousingand

UrbanRuralDevelopment.

-

人人文库

MinistryofHousingandUrbanRuralDevelopmentofthePeople'sRepublicofChina

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January16，2020

Foreword

AccordingtotherequirementsofDocumentJIANBIAO［2015］No.274issuedbytheMinistryof

HousingandUrbanRuralDevelopment（MOHURD）ofthePeople'sRepublicofChina-＂Noticeon

-

PrintingandDistributing'theDevelopmentandRevisionPlanofNationalEngineeringConstruction

Standardsin2016'＂.Thestandardcompilationteamhascompiledthisstandardafterextensive

investigationandstudy，earnestsummaryofpracticalexperienceandextensivesolicitationofopinions

withreferencetorelevantinternationalstandardsandforeignadvancedstandards.

Themaintechnicalcontentsofthisstandardinclude：generalprovisions，termsandsymbols，

buildingmaterials，surveyanddesigningforbuildingengineering，construction，inspectionand

acceptance，etc.

Themaintechnicalcontentsrevisedinthisstandardareoutlinedbelow：

1.Tolueneandxyleneareaddedintoindoorairpollutants；

2.Theclassificationofdecoratingmaterialsisrefined，andthelimitandmeasurementmethodof

pollutantcontent（releaseamount）insomematerialsareadjusted；

3.Theenvironmentaltestchambermethodanddesiccatormethodformeasurementof

formaldehydeemissionfromwoodbasedpanelsareretained；

-专用

4.Therequirementsforpollutioncontrolpreassessmentandmaterialselectionforindoor

-

decorationdesignarespecified；

5.TherequirementsfortheminimumventilationfrequencyofclassIcivilbuildingswithnatural

ventilationarespecified；

6.Thecomprehensiveradonpreventionmeasuresofbuildingsareimproved；

7.Morestricterpollutioncontrolrequirementsforthedecorationofpreschools/nurseries/

kindergartens，schoolclassrooms，andstudentdormitoriesarespecified；

8.Thetestmethodforradonconcentration人人文库inindoorairisdefined.

9.Thepollutantconcentrationlimitinindoorairisredetermined；

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10.Thesamplingandtestmethodforbenzeneseriesandtotalvolatileorganiccompounds

（TVOC）withTCcompositeadsorptiontubesareadded，andthesamplingandmeasurement

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requirementsforindoorairpollutantsarefurtherimprovedandrefined.

Theprovisionsprintedinboldtypeinthisstandardaremandatoryonesandmustbeimplemented

strictly.Thisstandardisunderthejurisdictionof，anditsmandatoryprovisionsareinterpretedbythe

MinistryofHousingandUrbanRuralDevelopment.HenanProvincialAcademyofBuildingResearch

-

Co.，Ltd.isinchargeoftheexplanationofspecifictechnicalcontents.Therelevantoptionsandadvice

derivedfromtheprocessofimplementingthisstandardcanbepostedorpassedontoHenanProvincial

AcademyofBuildingResearchCo.，Ltd.（Address：No.4FengleRoad，ZhengzhouCity，Henan

Province，Postcode：450053）.

ChiefDevelopmentOrganizations：

HenanProvincialAcademyofBuildingResearchCo.，Ltd.

TihomeConstructionandDevelopmentCo.，Ltd.

1··

Co-DevelopmentOrganizations：

NationalCenterforQualitySupervisionandTestofBuildingEngineering

ChineseResearchAcademyofEnvironmentalSciences

ShanghaiZhongcaiEngineeringTestingCo.，Ltd.

DepartmentofEngineeringPhysics，TsinghuaUniversity

TianjinResearchInstituteofBuildingScienceCo.，Ltd.

ZhejiangAcademyofBuildingResearch&DesignCo.，Ltd.

KunshanConstructEngineeringQualityTestingCenter

ShenzhenInstituteofBuildingResearchCo.，Ltd.

ShandongProvincialAcademyofArchitecturalScienceCo.，Ltd.

ChinaAcademyofBuildingResearch

ChiefDrafters：

WANGXiyuanLIUHongkuiPANHongXIONGWeiBAIZhipeng

ZHULiMEIJingDENGShujuanZHUJunZHANGJiwenGUOQiang

YINXiaomeiLIUFengdongCHENYongliangWANGQianxue

CHENZeguangCHENSonghuaLUBinBASongtao

ChiefReviewers：

WANGYouweiWANGShilongXIEBaoyingLIJinchuanCAOYang

LIJianLIANGJipanLIShengyingLIANZhiwei

ChiefTranslators：专用

WANGXiyuanBAIZhipengGAOYaoWANGRondaWUWenbao

WANGQianxueLIYunlongTONYLeungSTEPHENW.Sadler

JIXuelinBIMinna

ChiefTranslationReviewers：

SHIXiaomingLIWeiCHENYunfaCAOYangZHANGYinping

SUNXiaoyan

人人文库

2··

Contents

1Generalprovisions………………（1）

2Termsandsymbols……………（2）

2.1Terms…………………………（2）

2.2Symbols………………………（3）

3Buildingmaterials………………（4）

3.1Inorganicnonmetallicmainbuildingmaterialsanddecoratingmaterials………………（4）

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3.2Woodbasedpanelsandfinishingproducts…………（4）

-

3.3Coatings………………………（5）

3.4Adhesives……………………（6）

3.5Waterbasedtreatmentagents……………………（6）

-

3.6Others…………………………（6）

4Surveyanddesigningforbuildingengineering…………………（9）

4.1Generalrequirements……………（9）

4.2Radonconcentrationmeasurementandresistanceonconstructionsites…………………（9）

4.3Choiceofconstructionmaterials…………………（10）

5Construction……………………专用（12）

5.1Generalrequirements……………（12）

5.2Onsiteexaminationofbuildingmaterials…………（13）

-

5.3Requirementsforconstruction……………………（14）

6Inspectionandacceptance………………………（16）

AppendixAMeasurementofradonexhalationratefrommaterialsurfaces……（19）

AppendixBMeasurementofemissionoffreeformaldehydeandVOCin

decoratingmaterials人人文库usingenvironmentaltestchambermethod……（21）

AppendixCMeasurementofradonconcentrationinsoilandradonexhalationrate

fromthesoilsurface…………………（23）

AppendixDMeasurementofbenzene，toluene，xyleneinindoorair……………（26）

AppendixEMeasurementofTVOCinindoorair………………（28）

Explanationofwordinginthisstandard……………（31）

Listofquotedstandards……………（32）

1Generalprovisions

1.0.1Thisstandardisformulatedwithaviewtopreventandcontrolindoorenvironmentalpollution

frommainbuildingmaterialsanddecoratingmaterialsincivilbuildingengineering，tosafeguardhuman

healthandpublicinterests，toachievethegoalofadvancedtechnologyandeconomicrationality.

1.0.2Thisstandardisapplicabletothecontrolofindoorenvironmentalpollutioninconstruction，

extension，andrenovationofcivilbuildingengineering.

1.0.3Indoorenvironmentalpollutantscontrolledbythisstandardincluderadon，formaldehyde，

ammonia，benzene，toluene，xylene，andtotalvolatileorganiccompounds.

1.0.4Theclassificationofcivilbuildingengineeringshallmeetthefollowingrequirements：

1ClassⅠcivilbuildingsshallincluderesidentialbuildings，residentialfunctionalapartments，

hospitalwards，nursinghomefacilitiesfortheelderly，preschools/nurseries/kindergartens，school

classrooms，studentdormitories，etc.

2ClassⅡcivilbuildingsshallincludeofficebuildings，shops/departmentstores，hotels，cultural

andentertainmentvenues，bookstores，libraries，exhibitionhalls，gymnasiums，publictransportation

waitingrooms，restaurants，etc.

1.0.5Themainbuildingmaterialsanddecoratingmaterialsselected专用forcivilbuildingengineeringshall

meettherequirementsofthisstandard.

1.0.6Notonlytherequirementsstipulatedinthisstandardforindoorenvironmentalpollutioncontrol

ofcivilbuilding，butalsothoseinthecurrentrelevantstandardsofthenationshallbecompliedwith.

人人文库

1··

2Termsandsymbols

2.1Terms

2.1.1civilbuildingengineering

Civilbuildingstructuralanddecoratingengineeringwithconstruction，extension，andrenovation

arecollectivelyreferredtoascivilbuildingengineering.

2.1.2environmentaltestchamber

Equipmentimitatingtheindoorenvironmentandusedtomeasurechemicalpollutantemissions

fromdecoratingmaterials.

2.1.3radonexhalationratefromthesurface

Theradioactivitylevelofradonatomsreleasedperunitareaandperunittimefromthesurfaceof

thesoilormaterial.

internalexposureindex

2.1.4（IRa）

Thequotientobtainedbydividingthespecificactivityofthenaturalradionuclideradium226inthe

-

mainbuildingmaterialsanddecoratingmaterialsbythespecificactivitylimitvalueof200.

externalexposureindex

2.1.5（Iγ）

Thesumofthequotientsobtainedbydividingthespecific专用activityofthenaturalradionuclides

radium226，thorium232，andpotassium40inthemainbuildingmaterialsanddecoratingmaterialsby

---

thespecificactivitylimitsof370，260，and4200，respectively.

2.1.6radonconcentration

Radonradioactivitylevelperunitvolumeofair.

woodbasedpanels

2.1.7-

Productswithwoodornonwoodplantfiberasthemainrawmaterial，canbefurthermadeintoa

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varietyofmaterialpieces，eitherwithorwithouttheadditionofadhesiveandotheradditives，andwhich

canbelayeredupandgluedtoobtain人人文库plywoodsheetsormouldingproducts.Theseproductsmainly

includeplywood，fiberboard，particleboardanditssurfacedecoratingboard，etc.

woodplasticcompositeproducts

2.1.8-

Akindofproductmadefromacertainpercentageofwoodfibermaterialsandthermoplastichigh

molecularpolymers.Theseproductsmainlyincludewoodplasticflooring，woodplasticdecorating

--

board，woodplasticdoors，etc.

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waterbasedtreatmentagents

2.1.9-

Theagentswithwaterasdiluentcanbeimmersedinsidethemainbuildingmaterialsand

decoratingmaterials，improvetheirperformanceofflameretardant，waterproof，anticorrosion，etc.

2.1.10bulkconstructionadhesive

Adhesiveswithsolventcontentorwatercontentwithin5%totalmassofthecolloid.

2.1.11totalvolatileorganiccompoundsintheair

Thetotalmassofvolatileorganiccompoundsintheairthatismeasuredundertheregulatedtesting

conditionsofthisstandard，abbreviatedasTVOC.

2.1.12volatileorganiccompoundsinthematerial

2··

Thegrossmassofvolatileorganiccompoundsinthematerialthatismeasuredundertheregulated

testingconditionsofthisstandard，abbreviatedasVOC.

2.1.13decoratingmaterialloadingfactor

Theratiooftotalexposuresurfaceareaofindoordecoratingmaterialstothenetroomspace

volume.

2.2Symbols

—Themasspercentageofthethmaterialinthetotalmaterialconsumption；

fii

Internalexposureindex

IRa—；

Externalexposureindex

Iγ—；

—Internalexposureindexofthethmaterial；

IRaii

—Externalexposureindexofthethmaterial.

Iγii

专用

人人文库

3··

3Buildingmaterials

3.1Inorganicnon-metallicmainbuildingmaterialsanddecoratingmaterials

3.1.1Theradioactivelimitsoftheinorganicnon-metallicmainbuildingmaterialssuchassand，

stone，brick，solidblock，cement，concrete，andconcreteprefabricatedcomponentsusedincivil

buildingengineeringshallmeettherequirementsofthecurrentnationalstandardGB6566Limitsof

RadionuclidesinBuildingMaterials.

3.1.2Theradioactivelimitsofinorganicnon-metallicdecoratingmaterialssuchasstone，building

sanitaryceramics，gypsumproducts，andinorganicpowderybondingmaterialsusedincivil

buildingengineeringshallbeclassifiedinaccordancewiththerequirementsofthecurrentnational

standardGB6566LimitsofRadionuclidesinBuildingMaterials.

3.1.3Wherecivilbuildingengineeringuseaeratedconcreteproductsandothermainbuildingmaterials

suchashollowbricks/hollowblockswithahollowrate（porosityrate）largerthan25%，etc.，the

radioactivitylimitsshallbeinaccordancewiththosespecifiedinTable3.1.3.

Table3.1.3Theradioactivitylimitofaeratedconcreteproductsandothermain

buildingmaterialswithahollowrate（porosityrate）largerthan25%

Measurementitem专用Limit

Radonexhalationratefromthesurface［Bq/（m2·s）］≤0.015

Internalexposureindex≤1.0

（IRa）

Externalexposureindex≤1.3

（Iγ）

3.1.4Themethodformeasuringtheradionuclidecontentofmainmaterialsanddecoratingmaterials

shallmeettherequirementsofthecurrentnationalstandardGB6566LimitsofRadionuclidesin

BuildingMaterials，andthemethodformeasuringradonexhalationratefromthesurfaceshallbein

accordancewiththosespecifiedinAppendix人人文库Aofthisstandard.

3.2Wood-basedpanelsandfinishingproducts

Theamountofreleasedfreeformaldehydeshallbemeasured，whenwoodbasedpanelsand

3.2.1-

finishingproductsareusedindoorsaspartofcivilbuildingengineering.

3.2.2Theenvironmentaltestchambermethodandthedesiccatormethodcanbothbeusedtomeasure

theamountofreleasedformaldehydefromwoodbasedpanelsandfinishingproducts.Theresultsfrom

-

theenvironmentaltestchambermethodwillprevailifthemeasurementsarenotconsistentwitheach

other.

Theamountofreleasedfreeformaldehydefromwoodbasedpanelsandfinishingproductsas

3.2.3-

measuredbytheenvironmentaltestchambermethodshallnotbelargerthan0.124mg/m3.The

measurementmethodshallcomplywiththeAppendixBofthisstandard.

Theamountofreleasedfreeformaldehydefromwoodbasedpanelsandfinishingproductsas

3.2.4-

measuredbythedesiccatormethodshallnotbelargerthan1.5mg/L.Themeasurementmethodshall

meettherequirementsofthecurrentnationalstandardGB/T17657TestMethodsofEvaluatingthe

.

PropertiesofWood-basedPanelsandSurfaceDecoratedWood-basedPanels

4··

3.3Coatings

Thefreeformaldehydelimitinindoorwaterbaseddecorativepanelcoatings，waterbasedwall

3.3.1--

coatings，andwaterbasedputtiesusedincivilbuildingengineeringshallmeettherequirementsofthe

-

currentnationalstandardGB18582LimitofHarmfulSubstancesofArchitecturalWallCoatings.

Thefreeformaldehydecontentintheotherwaterbasedcoatingsandwaterbasedputtiesfor

3.3.2--

civilbuildingengineeringshallbemeasured，andthelimitsshallbeinaccordancewiththosespecifiedin

Table3.3.2，andthemethodusedtomeasuretheamountoffreeformaldehydecontentshallmeetthe

requirementsofthecurrentnationalstandardGB/T23993DeterminationofFormaldehydeContentof

WaterborneCoatings—SpectrophotometricMethodwithAcetylacetone.

Table3.3.2Limitsoffreeformaldehydeinotherindoorwater-basedcoatingsandwater-basedputties

Limit

Measurementitem

OtherwaterbasedcoatingsOtherwaterbasedputties

--

Freeformaldehyde（mg/kg）≤100

Wheresolventbaseddecorativepanelcoatingsareusedincivilbuildingengineering，the

3.3.3-

limitsofVOCandbenzene，toluene+xylene+ethylbenzeneshallmeettherequirementsofthe

currentnationalstandardGB18582LimitofHarmfulSubstancesofArchitecturalWallCoatings.

Forsolventbasedwoodcoatingsandputties，allthesamelimitsaboveshallmeettherequirements

-

ofthecurrentnationalstandardGB18581IndoorDecoratingandRefurbishingMaterials—Limitof

.Forsolventbasedfloorcoatings，

HarmfulSubstancesofSolvent-BasedCoatingsforWoodenware专用-

thesecontentsshallmeettherequirementsofthecurrentnationalstandardGB38468Limitof

HarmfulSubstancesofInteriorFloorCoatings.

3.3.4Whenindoorphenolicantirustcoatings，waterproofcoatings，fireproofcoatings，andother

solventbasedcoatingsareusedincivilbuildingengineering，theamountofVOCandbenzene，

-

toluene+xylene+ethylbenzeneshallbemeasuredaftertheyaremixedaccordingtothemaximum

dilutionratiospecified，theirlimitsshallbeinaccordancewiththosespecifiedinTable3.3.4.The

measurementmethodforVOCcontent人人文库shallmeettherequirementsofthecurrentnationalstandard

GB/T23985PaintsandVarnishesDeterminationofVolatileOrganicCompound（VOC）

Content—DifferenceMethod.Themeasurementmethodsforbenzene，toluene+xylene+ethyl

benzeneshallmeettherequirementsofthecurrentnationalstandardGB/T23990Determinationof

，，，.

theContentsofBenzeneTolueneEthyl-benzeneandXyleneinCoatingsbyGasChromatography

Table3.3.4LimitsofVOC，benzene，toluene+xylene+ethylbenzeneinphenolicantirustcoatings，

waterproofcoatings，fireproofcoatings，andothersolvent-basedcoatingsforindooruse

Toluene+xylene+ethyl

CoatingcategoryVOC（g/L）Benzene（%）

benzene（%）

Phenolicantirustcoatings≤270≤0.3-

Waterproofcoatings≤750≤0.2≤40

Fireproofcoatings≤500≤0.1≤10

Othersolventbasedcoatings≤600≤0.3≤30

-

3.3.5ThelimitsofVOC，benzene，toluene+xylene+ethylbenzene，andfreediisocyanate

（TDI+HDI）shallmeettherequirementsofthecurrentnationalstandardGB18581IndoorDecorating

5··

andRefurbishingMaterials—LimitofHarmfulSubstancesofSolventBasedCoatingsforWoodenware，

whenpolyurethanecoatingsandpolyurethaneputtiesforwoodareusedincivilbuildingengineering.

3.4Adhesives

Thelimitoffreeformaldehydeinindoorwaterbasedadhesivesusedincivilbuildingengineering

3.4.1-

shallmeettherequirementsofthecurrentnationalstandardGB30982LimitofHazardousSubstances

inConstructionAdhesive.

ThelimitofVOCinindoorwaterbasedadhesives，solventbasedadhesives，andbulkconstruction

3.4.2--

adhesivesusedincivilbuildingengineeringshallmeettherequirementsofthecurrentnationalstandard

GB33372LimitofVolatileOrganicCompoundsContentinAdhesive.

Thelimitofbenzene，toluene+xylene，andfreetoluenediisocyanate（TDI）inindoorsolvent

3.4.3-

basedadhesiveandbulkconstructionadhesiveusedincivilconstructionengineeringshallmeetthe

requirementsofthecurrentnationalstandardGB30982LimitofHazardousSubstancesinConstruction

Adhesive.

3.5Water-basedtreatmentagents

Forwaterbasedtreatmentagentsusedincivilbuildingengineering，includingwaterbased

3.5.1--

flameretardant（includingfireproofcoatings），waterproofagents，preservatives，reinforcingagents，

etc.，thecontentoffreeformaldehydeshallbemeasured，andthelimitshallnotbelargerthan100mg/kg.

Themeasurementmethodforfreeformaldehydecontentinwaterbasedtreatmentagentsshall

3.5.2专用-

beinaccordancewiththemethodofthecurrentnationalstandardGB/T23993Determinationof

FormaldehydeContentofWaterborneCoatings—SpectrophotometricMethodwithAcetylacetone.

3.6Others

3.6.1Theamountofammoniareleasedfromconcreteadmixturesincivilbuildingengineering

shallnotbelargerthan0.10%.Themeasurementmethodforammoniareleaseamountshallmeet

therequirementsofthecurrentnationalstandardGB18588LimitofAmmoniaEmittedfromthe

ConcreteAdmixtures.人人文库

3.6.2Theamountofammoniareleasedfromammoniareleasingflameretardantandfireproof

coatings，andwaterbasedbuildingwaterproofcoatingsincivilbuildingengineeringshallnotbelarger

-

than0.50%.Themeasurementmethodshallmeettherequirementsofthecurrentprofessionalstandard

JG/T415.

LimitandTestMethodofHarmfulSubstancesinFire-retardantCoating

3.6.3Theamountofresidualformaldehydefromconcreteadmixtureswhichcanreleaseformaldehyde

incivilbuildingengineeringshallnotbelargerthan500mg/kg.Themeasurementmethodshallmeet

therequirementsofthecurrentnationalstandardGB31040LimitofResidualFormaldehydefromthe

ConcreteAdmixtures.

3.6.4Theamountoffreeformaldehydereleasedfrombondedwoodstructuralmaterialsincivil

buildingengineeringshallnotbelargerthan0.124mg/m3.Themeasurementmethodshallmeetthe

requirementsoftheAppendixBofthisstandard.

3.6.5Theamountoffreeformaldehydereleasedfromcurtainandsoftpackageincivilbuilding

engineeringshallnotbelargerthan0.124mg/m3.Themeasurementmethodshallmeetthe

requirementsoftheAppendixBofthisstandard.

6··

3.6.6Thelimitoffreeformaldehydeinwallpaper（cloth）shallbeinaccordancewithTable3.6.6.The

measurementmethodshallmeettherequirementsofthecurrentnationalstandardGB18585Indoor

DecoratingandRefurbishingMaterials—LimitofHarmfulSubstancesofWallpapers.

Table3.6.6Limitsoffreeformaldehydeinindoorwallpaper（cloth）

Limit

Measurementitem

NonwovenwallpaperWovenwallpaper（cloth）Otherwallpaper（cloth）

-

Freeformaldehydecontent（mg/kg）≤120≤60≤120

3.6.7ThemeasurementmethodofvolatilecontentinPVCcoiledfloor，woodplasticcompositeproducts

floor，andrubberplasticflooringmaterialsforcivilbuildingengineeringshallmeettherequirementsofthe

currentnationalstandardGB18586

IndoorDecoratingandRefurbishingMaterials-LimitofHarmful

SubstancesofPolyvinylChlorideFloorCoverings.Thelimitshallbeinaccordancewiththose

specifiedinTable3.6.7.

Table3.6.7LimitsofvolatilesinPVCcoiledfloor，woodplasticcompositeproductsfloor，

andrubberplasticflooringmaterials

MaterialstypeLimits（g/m3）

Glassfibersubstrate≤75

PVCcoiledfloor（foamingtype）

Othersubstrate≤35

Glassfibersubstrate≤40

PVCcoiledfloor（nonfoaming）

Othersubstrates专用≤10

Woodplasticcompositeproducts（foamedsubstrate）≤75

Woodplasticcompositeproductsfloor

≤40

（wherethebasematerialisnotfoamed）

Rubberandplasticflooringmaterials≤50

3.6.8ThemeasurementmethodsfortheamountofVOCemission，andthefreeformaldehydecontent

shallbeinaccordancewiththosespecifiedinAppendixBofthisstandard.ThelimitsofVOCandthe

freeformaldehydeinthecarpetand人人文库carpetlinerforcivilbuildingengineeringshallbeinaccordancewith

thosespecifiedinTable3.6.8.

Table3.6.8EmissionlimitsofVOCandfreeformaldehydeincarpetandcarpetliner

MaterialstypeMeasurementitemsLimits［mg/（m2·h）］

VOC≤0.500

Carpet

Freeformaldehyde≤0.050

VOC≤1.000

Carpetliner

Freeformaldehyde≤0.050

3.6.9Thelimitoffreeformaldehyde，benzene+toluene+ethylbenzene+xylene，andVOCinthe

indoorwallpaperadhesiveandwallpaper（cloth）adhesiveofbasefilmsforcivilbuildingengineering

shallbeinaccordancewiththosespecifiedinTable3.6.9.Themeasurementmethodfortheamountof

thebenzene+toluene+ethylbenzene+xyleneandfreeformaldehydeshallmeettherequirementsof

thecurrentna