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. |