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tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate

Basic information Uses Safety Supplier Related

tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate Basic information

Product Name:
tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate
Synonyms:
  • tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate
  • [2,2'-(1,4-Phenylene)bis(ethene)]-1,1,1',1'-tetracarboxylic acid tetraethyl ester
  • α,α'-Bis(ethoxycarbonyl)-1,4-benzenedipropenoic acid diethyl ester
  • Einecs 228-726-5
  • Propanedioic acid, 2,2'-(1,4-phenylenedimethylidyne)bis-, 1,1',3,3'-tetraethyl ester
  • Propanedioic acid, 2,2'-(1,4-phenylenedimethylidyne)bis-, tetraethyl ester
  • B-CAP
  • Hostavin B-CAP
CAS:
6337-43-5
MF:
C22H26O8
MW:
418.44
EINECS:
228-726-5
Mol File:
6337-43-5.mol
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tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate Chemical Properties

Melting point:
136-137℃
Boiling point:
484.4±45.0 °C(Predicted)
Density 
1.195
vapor pressure 
0Pa at 25℃
Water Solubility 
1mg/L at 22℃
InChI
InChI=1S/C22H26O8/c1-5-27-19(23)17(20(24)28-6-2)13-15-9-11-16(12-10-15)14-18(21(25)29-7-3)22(26)30-8-4/h9-14H,5-8H2,1-4H3
InChIKey
YUOKTNQLLUHUEK-UHFFFAOYSA-N
SMILES
C1(/C=C(\C(OCC)=O)/C(OCC)=O)=CC=C(/C=C(/C(OCC)=O)\C(OCC)=O)C=C1
LogP
3.39 at 23℃
EPA Substance Registry System
Propanedioic acid, 2,2'-(1,4-phenylenedimethylidyne)bis-, tetraethyl ester (6337-43-5)
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tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate Usage And Synthesis

Uses

UV-988 is a high-absorption UV absorber developed specifically for transparent polymer materials. It effectively absorbs the UVB band of ultraviolet light, which is sensitive to PC/PET/PMMA materials, reducing UV damage to the substrate. This allows the material to withstand various weather conditions and maintain good optical and physical properties even after long-term use. Consequently, it extends the lifespan of solar panels and films, achieving the goal of aging resistance.

Flammability and Explosibility

Non flammable

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