三聚磷酸钠Sodiumtripolyphosphate(STPP)别名：磷酸五钠化学式：Na5P3O10分子量：367.86执行标准：GB/T9983-2004（工业级）QB1034-91（食品级）性状：白色粉末,熔点622℃,易溶于水,对钙镁等金属离子有显著的螯合能力,能软化硬水,使悬浮液变成溶液,有弱碱性,无腐蚀性,是一种无机物表面活性剂,对润滑油和脂肪有强烈的乳化作用,堆密度通常分为低密度0.35-0.5g/cm3,中密度0.51-0.65g/cm3,高密度0.66-0.9g/cm3;五钠有I型(高温型)和II型(低温型)两种结晶形态,二者化学性质相同,区别在于热稳定性和吸湿性I型高于II型,同时二者的溶解度,溶解时水合热量都不同。用途：用作合成洗涤剂的主要助剂,肥皂增效剂,制革予鞣剂,工业用水的软水剂;油漆,高龄土,氧化镁,碳酸钙钻井泥浆等悬浮液处理的有效散剂;造纸用作防油污剂;食品工业中用于罐头,果汁饮料,奶制品,豆乳等的品质改良剂,主要供火腿罐头嫩化,蚕豆罐头中使豆皮软化,亦可用作软化剂和增稠剂。包装与贮运：内塑外编，每袋净重25、50、1000kg。防潮、防水、不可露天堆放。技术指标：序号指标名称工业级食品级1主含量（以Na5P3O10计）%≥94.095.02***%≥57.057.03水不溶物%≤0.10.054铁（Fe）%≤0.010.015PH值（1%水溶物）9.2-10.09.5-10.06***(以Pb计)%≤0.0017***(以As计)%≤0.00038氟化物(以F计)%≤0.0039粒度普通粉末16目过筛量%≥35目过筛量%≥100目过筛量%≥细粉100目过筛量%≥95.090.040.090.095.090.040.090.010白度%≥90.090.0Sodiumtripolyphosphate（STPP）Byname:Pent-sodiumPhosphateMolecularformula:Na5P3O10MolecularWeight:367.86Standardexecuted:GB/T9983-2004(technicalgrade)QB1034-91(foodgrade)CASNumber:7758-29-4Properties:Whitepowder;Meltingpoint622°C;Easilysolubleinwater;Ithasgotsalientchelatingcapacitytoi***ofCaandMgetc.andcansoftenhardwatertomakesuspensionsolutionbecomeintoclearsolution;Ithasgotweakalkalinitybutnocorrosiveness.Itisasurfactant,andhasgotoutstandingemulsificationtolubricantsandfat.Ithasdifferentbulkdensity,i.e.lowdensity0.35-0.5g/cm3,mediumdensity0.51-0.65g/cm3andhighdensity0.66-0.9g/cm3.Thisproducthastwocrystallineforms,namelyTypeI(hightemperaturetype)andTypeII(lowtemperaturetype).Thechemicalpropertiesofthetwotypesarethesame,andthedifferencebetweenthemliesinthethermostability,hygroscopicity,solubilityandhydrationheatwhendissolving.Uses:Usedasoneofthemainauxiliariesforsyntheticdetergent,synergistforsoap;watersoftener,tanningagentforleathermaking,auxiliaryfordyeing;Asaneffectivedispersionagentforsuspensionsoluti***ofcoatings,kaolin,magnesiumoxide,calciumcarbonateanddrillingmudetc.;Asanoilcontaminationresistanceagentinpaperproduction.Infoodstuffindustryitisusedasqualityimproverintheprocessofcannedfood,fruitjuicedrinks,foodstuffsfrommilkorsoybeans.Itmaytenderthemeatincannedhamandsoftentheskinofhorsebeanincannedhorsebean.Itmayalsoservesasasoftenerordensifierinfoodstuffindustry.)