What is the Difference between Soda-lime Glass and ...

Borosilicate glass is an “engineered “glass developed specifically for use in laboratories and applications where thermal, mechanical and ... Home / > Blog > WhatistheDifferencebetweenSoda-limeGlassandBorosilicateGlass? WhatistheDifferencebetweenSoda-limeGlassandBorosilicateGlass? ChemicalResistance Glassware LabSupplies Postedbywestlabblogcanada Nov022017 0Comments BorosilicateGlass Borosilicateglassisan“engineered“glassdevelopedspecificallyforuseinlaboratoriesandapplicationswherethermal,mechanicalandchemicalconditionsaretooharshforstandard,household-typesodalimeglass.Itisatypeofglasswith silica and borontrioxide asthemainglass-formingconstituents.Borosilicateglassesareresistanttothermalshockmorethanotherkindsofcommonglass.Itcangofromfreezertoovenandbackagain.Itshighthermalresistanceisduetohavingverylowcoefficientsofthermalexpansion.Itistypicallyusedforconstructionofreagentbottlesbecauseitislesssubjecttothermalstressandmeetsthedemandofmostlaboratories. Soda-LimeGlass Soda-limeglassisthemostprevalenttypeofglass.ThisisalsoknownasSoda-lime-silicaglass.Itisusuallyusedforwindowpanesandglasscontainerssuchasbottlesandjarsforbeverages,food,andsomecommodityitems.Soda-limeglassaccountsforabout90%ofmanufacturedglass. Comparison SiliconDioxideSiO2,BoronTrioxideB2O3,SodiumOxideNa2O,andAluminiumOxideAl2O3 arefourcompoundsofbothSoda-limeglassandBorosilicateglass.However,theproportionofeacharedifferentinBorosilicateglassandSoda-limeglass.ThemixtureinBorosilicateglassbindsallthechemicalsmoretightlytogether,leadingtoamuchhighermeltingpoint.BorosilicateglasshasahigherproportionofsiliconedioxidethanSodaLimeglass(80.6%inBorosilicateglassand69%inSoda-limeglass). ThemaindifferencesbetweenBorosilicateglassandSoda-limeglassinclude: Thermalresistance OneofthedifferencesbetweenSoda-limeglassandBorosilicateglassistheirthermalresistance.BorosilicateglasshasalowerCTE(CoefficientsofLinearThermalExpansion)thansoda-limeglass(aboutone-thirdthatofordinarysoda-limeglass). Thus,Borosilicateglassismoreresistanttothermalshock,therefore,isusuallyusedforglasswarethatmaybedirectlyheated,suchasbeakersorboilingflaskswhileSodaLimeglassisusedforglasswarewhichisnotlikelytobedirectlyandstronglyheated,forexamplepetridishes,TLCchromatographytanksandvolumetricglassware. Hardness Intermsofhardness,Borosilicateglassisharder,strongerandmoredurablethanSoda-limeglass.AccordingtotheMohsscaleofmineralhardness,diamond’srateis10,chalkis1,borosilicatecomesinat7.5andtheothertypesofglassat6.Borosilicateglassisless dense (about2.23g/cm3)thantypicalsoda-limeglassduetothelowatomicmassofboron. Plasticity ThelowerCTE(CoefficientsofLinearThermalExpansion)inBorosilicateglasscanbemodelledintocomplexshapeslikevacuumflasks. Resistancetoacids BorosilicateglassismoreresistanttotheacidoticchemicalthanSoda-limeglassandItismoresuitabletobeutilisedinthechemistrylaboratorieswheretheacidicandalkalinesolutionsareused. NoComments BlogTags LabEquipment(23) Workflow(22) LabDesign(21) LabPlanning(21) Chemistry(18) LabSafety(16) Modulab(14) Culture(14) DecisionMaking(13) Budget(13) Communication(13) Testing(12) Education(11) Innovation(11) Lab(10) Technology(10) Water(10) Leadership(9) LeanLabs(9) LabSupplies(9) pH(9) Cleaning(8) Plasticware(7) Glassware(6) STEM(6) Chemicals(6) watertreatment(6) Goals(5) ChemicalResistance(5) Centrifuge(4) Microscope(4) Distillation(4) SpillHandling(3) Glasswasher(3) Fridge(3) Sterilization(2) GammaRay(2) Conductivity(2) Packaging(1) Blood(1) BRIX(1) Refractometer(1) Biology(1) Showmore Totop