Tralopyril

Itisametal-freeantifoulingagentforuseinantifoulingpaintsforshiphullsorothermarinestructures.thisproducthasabroadspectrumofactivityagainsthard-shelledandsoft-bodiedinvertebrateanimalfoulingorganisms.Becauseofitschemicalandphysicalstabilityincoatings,thelowwatersolubilityandleachability,thisproductcontainingantifoulingpaintscanoftenbespecifiedformulti-yeardry-dockingintervalscomparabletothoseachievedwithcopper-basedproducts.

GeneralInformation

CommonName(ISO) Tralopyril
IUPACName 4-bromo-2-(4-chlorophenyl)-5-(trifluoromethyl)-1H-pyrrole-3-carbonitrile

CASName :1H-Pyrrole-3-carbonitrile,4-bromo-2-(4-chlorophenyl)-5-(trifluoromethyl)
CASRegistryNo.
MolecularFormula C12H5BrClF3N2
MolecularWeight 349.5

ChemicalAndPhysicalProperties

Thesepropertiesaretypicalbutdonotconstitutespecifications:

Appearance Whitetooff-whitepowder

Purity(Chromatography) Minimum98.0%w/w

WaterContent(Karl-FisherTitration) Maximum0.5%w/w

ParticleSizeDistribution(LaserDiffraction) D50:4.0-10.0µm;D99:maximum25.0µm

OilAbsorptionValue(ISO787-5) 28mlper100g

Density 1.714g/mlat20°C

VapourPressure 1.9x10-8Paat20°C;4.6x10-8Paat25°C

DissociationConstant pKa=7.08at26°C

pH 5.16at22°C(0.1%w/vdispersionindistilledwater)

SolubilityInWaterAndOrganicSolvents

SolubilityinWater

ColumnElution Solubility,inmg/l,at20°C

DistilledWater(pH4.9) 0.17
ArtificialSeawater(pH8.1) 0.16

SolubilityinOrganicSolvents

Solubility,ing/l,at20°C

Acetone
Ethylacetate
Methanol
n-Octanol
n-Heptane

Xylene

ChemicalStabilityAndCompatibility

Therearenoknownincompatibilitiesbetweenthisproductandbinderresins,pigments,fillers,solventsoradditivesthatarecommonlyusedinantifoulingpaints.thisproductispronetohydrolysisandphotolysisindiluteaqueoussolutions.However,ithasbeendemonstratedthatthisproductcanbeusedinwater-borneantifoulingpaintswithoutanystabilityissues.Photolysisofthisproductwillnormallynotoccurinpigmentedcoatingsystems.

ThermalStability

thisproductexhibitsexcellentthermalstability.IndynamicalDifferentialScanningCalorimetry(DSC)inopenatmosphereonlymelting(±249º)andendothermaldecompositionwasobserved.InadynamicalDSCrununderclosedconditionsalargeexothermwasmeasuredfrom±230º(325J/g),withmeltingduringtheexotherm.

ShelfLife

Ifstoredatambienttemperature,intheoriginalsealedcontainer,thisproductTechnicalhasaninitialshelflifeoffiveyears.

AntifoulingPaintFormulation

thisproductisfitforuseindifferenttypesofantifoulingpaintincludingtraditionalrosin-basedControlledDepletionPolymer(CDP)painttypes,aswellasSelf-PolishingCopolymer(SPC)systems.

Itisrecommendedtousethisproductinconjunctionwithasoftfoulingagenttoensurecompleteprotectionagainstbothhardandsoftfouling.

RecommendedUseLevels

Effectiveuselevelsofthisproductincopper-freeantifoulingpaintsaretypicallybetween4and6percentbyweight(ontotalformula,wetpaint).Alternatively,thisproductcanbeusedinconjunctionwithacopper-basedbiocide,eithertoreducethecopperlevelwithoutsacrificingperformanceortoincreasetheperformanceand/orservicelifeofcopper-basedproducts.

Advantages:

Metal-freeantifoulingagent

• Lowuseconcentrationsprovidecost-effectivealternativetocopper-basedantifoulants

• Broadspectrumcontrolofhardfoulingorganisms

• Long-lastingefficacy

• Effectiveinmarineandfreshwaterenvironments

• Breaksdownrapidlyintheaquaticenvironment

• Doesnotinducegalvaniccorrosion,particularlysuitableformetalhullsincludingaluminium

• Providespaintformulationflexibilityincludingbrightcoloursandimprovedcolourretention,lowerVOCaswellaswaterbasedpaints

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