Methyl tetrahydrophthalic anhydride CAS No.19438-64-3
Pharmaceutical Materials 2025-03-20
CAS No.19438-64-3
Names and Identifiers
| Name | 3a-methyl-5,6-dihydro-4H-isobenzofuran-1,3-dione |
| Synonyms | MTHPA AC-METHYL 1,3-Isobenzofurandione, 3a,4 |
| CAS | 11070-44-3 19438-64-3 |
| EINECS | 234-290-7 |
| InChI | InChI=1/C9H10O3/c1-9-5-3-2-4-6(9)7(10)12-8(9)11/h3,5-6H,2,4H2,1H3 |
Physico-chemical Properties
| Molecular Formula | C9H10O3 |
| Molar Mass | 166.17 |
| Density | 1,21 g/cm3 |
| Boling Point | 120 °C/3 mmHg |
| Flash Point | 157 °C |
| Water Solubility | Soluble in water |
| Vapor Presure | 0.373Pa at 24.85℃ |
| Appearance | Liquid |
| Color | Colorless to Light yellow |
| Storage Condition | Room Temprature |
| Refractive Index | 1.4970 to 1.5020 |
| MDL | MFCD00014585 |
| Use | For unsaturated polyester resin, epoxy resin curing agent, pesticide intermediates, dry-type transformer potting |
Risk and Safety
| Hazard Symbols | Xn – Harmful |
| Risk Codes | R36/37/38 – Irritating to eyes, respiratory system and skin. R42/43 – May cause sensitization by inhalation and skin contact. R41 – Risk of serious damage to eyes |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. S37/39 – Wear suitable gloves and eye/face protection S24 – Avoid contact with skin. S22 – Do not breathe dust. |
| UN IDs | UN 3082 9/PG III |
| RTECS | TI3325000 |
| Hazard Class | 9 |
| Packing Group | III |
Upstream Downstream Industry
| Raw Materials | Maleic anhydride |
Reference Information
| LogP | 2.45 at 20℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | methyl tetrahydrophthalic anhydride is an excellent organic solvent with a wide range of uses, mainly used in electronics, medicine, dyes, spices, cosmetics, paints, coatings, inks, electroplating and other industries. |
