Introduction：Basic information about dimethyl (p-methoxybenzylidene)malonate CAS 7443-25-6, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
dimethyl (p-methoxybenzylidene)malonate Basic information
| Product Name: | dimethyl (p-methoxybenzylidene)malonate |
| Synonyms: | Cyasorb UV 1988;Dimethyl 4-methoxybenzylidenemalonate;Hostavin BRE 25;NSC 306435;PR 25;Sanduvor PR 25;4-MethoxybenzylideneMalonate;UV-1988 |
| CAS: | 7443-25-6 |
| MF: | C13H14O5 |
| MW: | 250.25 |
| EINECS: | 231-185-8 |
| Product Categories: | |
| Mol File: | 7443-25-6.mol |
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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℃ |
| storage temp. | Storage temp. 2-8°C |
| solubility | soluble in Methanol |
| form | powder to crystal |
| color | White to Almost white |
| Water Solubility | 91mg/L at 20℃ |
| InChI | InChI=1S/C13H14O5/c1-16-10-6-4-9(5-7-10)8-11(12(14)17-2)13(15)18-3/h4-8H,1-3H3 |
| InChIKey | JMFYZMAVUHNCPW-UHFFFAOYSA-N |
| SMILES | C(OC)(=O)/C(=C\C1=CC=C(OC)C=C1)/C(OC)=O |
| LogP | 2.4 at 20℃ |
| EPA Substance Registry System | Propanedioic acid, [(4-methoxyphenyl)methylene]-, dimethyl ester (7443-25-6) |
Safety Information
| TSCA | TSCA listed |
| 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 Preparation Products And Raw materials
