CAS:61789-51-3

CAS号：61789-51-3

品名：环烷酸钴CobaltNaphthenate

中文别名：石油酸亚钴;萘酸钴;石油酸钴;

英文别名：cobalt(2+),naphthalene-2-carboxylate;

分子式：C20H34CoO4

分子量：397.415

精确质量：397.179

Psa：80.26

EINECS号：263-064-0

外观与性状：黄色至棕色树脂质的液体

密度：0.95

熔点：140ºC

闪点：49ºC

折射率：n20/D 1.4620

储存条件：2-8ºC

安全说明：S23-S45-S53-S60-S61-S36-S37

危险类别码：R49; R10; R36/38; R42/43; R50/53; R40

包装等级：III

信号词：Danger

危险性防范说明：P210; P261; P280; P284; P301 + P310; P370 + P378

危险标志：GHS02, GHS08

危险性描述：H226; H304; H317; H334

简介：Cobalt(II)naphthenateisamixtureofcobalt(II)derivativesofnaphthenicacids.CobaltNaphthenateisacobaltsourcethatissolubleinorganicsolventsasanorganometalliccompound(alsoknownasmetalorganic,organo-inorganicandmetallo-organiccompounds).Cobaltnaphthenateisthecobaltsaltofnaphthenicacids.NaphthenicacidsareacomplexgroupofcarboxylicacidswiththegeneralformulaC,HZ~+~O~,wherenindicatesthecarbonnumberandZspecifiesthehydrogendeficiencyresultingfromringformation.Cobaltnaphthenateisthusamemberofthemetalcarboxylatesgroup.Allofthemetalcarboxylatesaltsaredesignedtoaddmetalstochemicalreactions.Theythereforeareexpectedtodissociateintofreemetalandfreeacid.Thehighpurityacetylacetonateanioncomplexesbybondingeachoxygenatomtothemetalliccationtoformachelatering.Becauseofthisproperty,CobaltNaphthenateiscommonlyusedinvariouscatalystsandcatalyticreagentsfororganicsynthesis.Thesecoordinationcomplexesarewidelyusedasoildryingagentsfortheautoxidativecrosslinkingofdryingoils.Metalnaphthenatesarenotwelldefinedinconventionalchemicalsensethattheyaremixtures.Theyarewidelyemployedcatalystsbecausetheyaresolubleinthenonpolarsubstrates,suchasthealkydresinsorlinseedoil.Thefactthatnaphthenatesaremixtureshelpstoconferhighsolubility.Asecondvirtueofthesespeciesistheirlowcost.Awell-definedcompoundthatexhibitsmanyofthepropertiesofcobaltnaphthenateisthecobalt(II)complexof2-ethylhexanoicacid.Oftenintechnicalliterature,naphthenatesaredescribedassalts,buttheyareprobablyalsonon-ioniccoordinationcomplexeswithstructuressimilartobasiczincacetate.Cobaltnaphthenateisusedprimarilyinunsaturatedpolyesterresins,paintdrierapplicationsandrubberadhesionpromotioninthetireindustry.Onecharacteristicofcobaltnaphthenateandothermetalcarboxylatesisthattheyreadilydissociatefromanionpairintofreemetalandfreeacid.Theyarefoundaspartiallydissociatedproductsintheambientenvironment(i.e.,neutralpH).DissociationisareversibleprocessandtheproportionofdissociatedsaltisdependentonthepHandpKa(thedissociationconstant),whichisthepHatwhich50%dissociationoccurs.InthelowpHenvironmentofthedigestivetract3(e.g.,pH1.2)completedissociationwilloccurforthesemetalcarboxylates.Thetransportand’bioavailabilityofthemetalsandacidsaredeterminedbytheirsolubilityinenvironmentalmediaandbiologicalfluidswhichisdeterminedbyenvironmentalparameterssuchaspH.Dissociationisareversiblereaction,splittingtheparentcompoundintotwoormorechemicalspecieswhichmaybeionic,butarenotnecessarilyso.Theprocesscanbegenerallyrepresentedas:

用途：主要用于橡胶粘合剂。

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