Methyl acetate[1]
IUPAC name	Methyl acetate
Systematic name	Methyl ethanoate
Identifiers
CAS number	79-20-9 Y
SMILES	O=C(C)OC
ChemSpider ID	6335
Properties
Molecular formula	C3H6O2
Molar mass	74.08 g/mol
Density	0.932 g/cm³
Melting point	-98 °C, 175 K, -144 °F
Boiling point	56.9 °C, 330 K, 134 °F
Hazards
MSDS	External MSDS
NFPA 704	3 1 0
Flash point	-9 °C
Y (what is this?)  (verify) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Methyl acetate, also known as acetic acid methyl ester or methyl ethanoate, is a clear, flammable liquid with a characteristic, not unpleasant smell like certain glues or nail polish removers. Methyl acetate has characteristics very similar to its analog ethyl acetate. Methyl acetate is used as a solvent in glues, paints, and nail polish removers, in chemical reactions, and for extractions. Methyl acetate is a non-polar (lipophilic) to weakly polar (hydrophilic) aprotic solvent. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or acids. Methyl acetate is VOC exempt.^[2]

Contents 1 Chemistry 2 Applications 3 See also 4 References

[edit] Chemistry

Methyl acetate is an ester that is synthesized from acetic acid and methanol in the presence of strong acids such as sulfuric acid in an esterification reaction. In the presence of strong bases such as sodium hydroxide or strong acids such as hydrochloric acid or sulfuric acid it is hydrolyzed back into methanol and acetic acid, especially at elevated temperature.

The conversion of methyl acetate back into its components, by an acid, is a first-order reaction with respect to the ester. The reaction of methyl acetate and a base, for example sodium hydroxide, is a second-order reaction with respect to both reactants.

[edit] Applications

Acetic anhydride is produced by carbonylation of methyl acetate in a process that was inspired by the Monsanto acetic acid synthesis.^[3]

[edit] See also

• Solvent
• Ethyl acetate

[edit] References