| Name | 4-methylphthalic acid |
| Synonyms | 4MPA 224-333-8 4-methylphthalate RARECHEM AL BO 0981 4-METHYLPHTALIC ACID 4-METHYLPHTHALIC ACID 4-Methylphthalic Acid 4-methylphthalic acid 4-methylbenzene-1,2-dicarboxylate 4-methyl-2-benzenedicarboxylicacid 2-Benzenedicarboxylicacid,4-methyl-1 4-METHYL-1,2-BENZENEDICARBOXYLIC ACID 4-methylbenzene-1,2-dicarboxylic acid 1,2-benzenedicarboxylic acid, 4-methyl- |
| CAS | 4316-23-8 |
| EINECS | 224-333-8 |
| InChI | InChI=1/C9H8O4/c1-5-2-3-6(8(10)11)7(4-5)9(12)13/h2-4H,1H3,(H,10,11)(H,12,13)/p-2 |
| Molecular Formula | C9H8O4 |
| Molar Mass | 180.16 |
| Density | 1.1987 (rough estimate) |
| Melting Point | 146-148 °C (lit.) |
| Boling Point | 232.96°C (rough estimate) |
| Flash Point | 204.4°C |
| Water Solubility | 3.984g/L(room temperature) |
| Vapor Presure | 8.24E-07mmHg at 25°C |
| Appearance | powder to lump |
| Color | White to Light yellow |
| pKa | 3.32±0.10(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.4209 (estimate) |
| MDL | MFCD00041946 |
| Physical and Chemical Properties | This product is white crystal, m.p.146 ~ 148 ℃, insoluble in water, and soluble in methanol, ethanol. |
| Hazard Symbols | Xi - Irritant![]() |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| HS Code | 29173995 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | 4-methylphthalic acid is an intermediate of the herbicide imidoxalic acid. |
| production method | the preparation method is to dehydrogenate 4-methyl -1,2,3, 6-tetrahydrophthalic anhydride and sulfur at 230~250 ℃ to form a product. |