Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Basic Information
Product Name: Methacrylic anhydride
CAS Number: 760-93-0
Alias: 2-Methylpropenoic anhydride
Molecular Formula: C8H10O3
Molecular Weight: 154.16
IUPAC Name: 2-methylprop-2-enoic anhydride
Structural Information
- Structure Type: Unsaturated carboxylic anhydride
- Structural Features: Two methacrylic acid groups connected by anhydride linkage, contains carbon-carbon double bonds with high polymerization activity
Physical & Chemical Properties
- Appearance: Colorless transparent liquid
- Odor: Pungent acid irritating odor
- Melting Point: -20 °C
- Boiling Point: 112 °C (32 mmHg)
- Density: 1.035 g/cm3 (20 °C)
- Refractive Index: n20/D 1.445
- Solubility: Reacts with water to generate methacrylic acid; miscible with ethanol, acetone, toluene and other organic solvents
- Stability: Easy to self-polymerize under heat, light and initiator; hydrolyzes rapidly when exposed to water; incompatible with alcohols, amines, strong oxidants and strong bases
Synthesis & Applications
Production Method
Methacrylic acid reacts with acetic anhydride or methacryloyl chloride, followed by vacuum distillation purification.
Main Applications
- Polymer monomer intermediate: Modify acrylic resin, polyolefin, cellulose materials
- Surface coating raw material: Crosslinking agent for UV curable coatings, printing inks
- Chemical modification reagent: Esterification/amidation modifier for hydroxyl and amino-containing compounds
- Medical material additive: Functional monomer for contact lens and dental polymer materials
Safety & Storage Instructions
Hazard Classification (GHS)
- H226 Flammable liquid and vapor
- H314 Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
Personal Protection
Full-face splash goggles, alkali-resistant full protective clothing, gas respirator, nitrile gloves; strictly isolated from water during operation
Storage Condition
Hermetically sealed metal drum, cool dark warehouse (≤25°C), add polymerization inhibitor; separate from water, alcohols, amines, oxidants and heat sources
Transportation
Class 3 flammable corrosive hazardous goods; prevent leakage, collision and sun exposure, isolate moisture
Quality Specifications
- Purity: ≥98.0% (GC)
- Water content: ≤0.1%
- Color (APHA): ≤20
- Inhibitor (MEHQ): 500–1000 ppm
Information Summary Table
| Item | Specification |
| CAS Number | 760-93-0 |
| Product Name | Methacrylic anhydride |
| Synonym | 2-Methylpropenoic anhydride |
| Molecular Formula | C8H10O3 |
| Molecular Weight | 154.16 |
| Appearance | Colorless transparent liquid |
| Boiling Point | 112 °C (32 mmHg) |
| Solubility | Hydrolyze in water, miscible with organic solvents |
| Purity Standard | ≥98.0% |
| Storage Condition | Sealed cool storage, add inhibitor, isolate water & heat |
| Hazard Property | Flammable, corrosive, strong skin/eye burn hazard |
| Main Usage | UV coating crosslinker, polymer modifier, organic synthesis acylation reagent |
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