dimethyl (p-methoxybenzylidene)malonate Chemical Properties

Melting point:

56-57℃

Boiling point:

144-145 °C(Press: 0.17 Torr)

Density 

1.187

vapor pressure 

0Pa at 20℃

solubility 

soluble in Methanol

form 

powder to crystal

color 

White to Almost white

Water Solubility 

91mg/L at 20℃

LogP

2.4 at 20℃

EPA Substance Registry System

Propanedioic acid, [(4-methoxyphenyl)methylene]-, dimethyl ester (7443-25-6)

Safety Information

HS Code 

2918.99.4700

dimethyl (p-methoxybenzylidene)malonate Usage And Synthesis

Description

Dimethyl (p-methoxybenzylidene)malonate (UV absorber PR25; Dimethyl 4-methoxy benzylidene malonate; Dimethyl 2-(4-methoxybenzylidene)malonate) is an unique UV absorber with excellent absorbtion especially in the UVB-range. It is colourless and, even in high concentration in the resin, does not lead to any discolouration and will not form coloured complexes with metal ions as many other UV absorbers do. Dimethyl (p-methoxybenzylidene)malonate can be used in solvent-borne coatings and general industrial coatings, particularly recommended for UV-cured systems and clear coats where colour neutrality is essential. It is recommended for use in PVC, polyesters, PC, polyamides, styrene plastics, EVA copolymers, and cellulosics, particular in Rigid PVC materials.

Uses

Dimethyl 4-methoxybenzylidene malonate is an organic carboxylic acid ester, mainly used as an ultraviolet absorber.

Flammability and Explosibility

Non flammable

dimethyl (p-methoxybenzylidene)malonate (7443-25-6)Related Product Information

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