Methacrylic acid(CAS#79-41-4)
| Hazard Symbols | C – Corrosive |
| Risk Codes | R21/22 – Harmful in contact with skin and if swallowed. R35 – Causes severe burns R37 – Irritating to the respiratory system R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. |
| 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. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2531 8/PG 2 |
| WGK Germany | 1 |
| RTECS | OZ2975000 |
| TSCA | Yes |
| HS Code | 2916 13 00 |
| Hazard Class | 8 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 1320 mg/kg |
Introduction
Methyl methacrylate (MMA) is a colorless liquid with a pungent odor. The following is an introduction to the properties, uses, preparation methods and safety information of methacrylic acid:Quality:Appearance: Colorless liquidDensity: 0.94 g/cm³Soluble: miscible with water and soluble in many organic solvents.Use:MMA is widely used as a monomer in the chemical industry for the polymerization of polymethyl methacrylate (PMMA).PMMA is widely used in optical fibers, optics, medical devices, building materials and handicrafts.MMA can also be used to polymerize acrolein resins and vinylate copolymers.Preparation method:The preparation of MMA can be done by acrylonitrile hydrogenation, isobutenone hydrogenation and methanol esterification. Among them, acrylonitrile hydrogenation is the main production method, through the reaction of acrylonitrile and hydrogen in the presence of a catalyst to obtain methacrylic acid.Safety Information:MMA is irritating and can cause irritation and burning sensation when it comes into contact with the skin and eyes. Direct contact with skin and eyes should be avoided and appropriate protective gloves and glasses should be worn.Long-term or heavy exposure to MMA can cause damage to the skin, eyes, and respiratory tract. Maintain good ventilation during operation and avoid inhaling its vapors.MMA is flammable and should be stored in a cool, dry place, away from fire and high temperatures.
