Acrylic acid, ester series polymerization inhibitor
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Acrylic acid, ester series polymerization inhibitor |
Chemical name: p-hydroxyanisole
Chemical alias: Hydroquinone monomethyl ether, p-hydroxyanisole, p-xylylene dimethyl ether
Molecular formula: C7H8O2
Molecular weight: 124.13
CAS NO.： 150-76-5
Properties: White crystals, soluble in alcohol, benzene, ether, etc., slightly soluble in water.
Quality standard:
| Index name | Quality Index |
| Appearance | White crystal |
| Melting point | 54 – 56.5 ℃ |
| Quinol | 0.01 - 0.05 % |
| Heavy metal (Pb) | ≤0.001% |
| Hydroquinone dimethyl ether | Undetectable |
| Chroma（APHA） | ≤10# |
| Loss on drying | ≤0.3% |
| Burning residue | ≤0.01% |
Application: It is mainly used as a polymerization inhibitor for the production of acrylonitrile, acrylic acid and other esters, methacrylates and other monomers. Its big advantage is that the monomer after adding MQ does not need to be removed when copolymerizing with other monomers, and it can be directly co-extracted from the ternary. It can also be used as antioxidant, plasticizer, etc.
