Physical Properties:

Methyl methoxyacetate (CAS 6290-49-9), Is a clear, colorless to light brown flammable liquid (𝐶4𝐻8𝑂3) with a pleasant, fruity odor and a boiling point of 129-130°C. It acts as a solvent in coatings and adhesives, featuring a density of $\sim$1.05 g/mL and a refractive index of 1.396.

Key Properties and Specifications

Physical State: Liquid

Appearance: Clear, colorless to light brown

Molecular Formula: 𝐶4𝐻8𝑂3

Molecular Weight: 104.11 g/mol

Boiling Point: 129–130°C (lit.)

Density: 1.051 g/mL at 25°C

Flash Point: $\sim$35°C (96°F)

Refractive Index: 𝑛20/𝐷 1.396

Solubility: Soluble in organic solvents (e.g., ethanol, ether); less soluble in water.

Stability: Stable under recommended storage conditions (<15°C).

Incompatible Materials: Acids, bases, strong oxidizing agents.

Industrial Applications and Safety

• Uses: Solvent for paints, coatings, and adhesives.
• Handling: Flammable liquid; keep away from heat, sparks, and open flames.
• Safety: Generally low toxicity but should be used with proper ventilation to avoid inhalation.

Methoxymethyl Acetate (CAS 6290-49-9) is more commonly referred to as Methyl Methoxyacetate or Methoxyacetic acid methyl ester. It is a colorless, flammable liquid (𝐶4𝐻8𝑂3) primarily used in chemical synthesis. Other common synonyms include Methyl 2-methoxyacetate, Methyl 𝛼-methoxyacetate, and Acetic acid, 2-methoxy-, methyl ester.

Key Synonyms for CAS 6290-49-9

• Methyl methoxyacetate
• Methoxyacetic acid methyl ester
• Methyl 2-methoxyacetate
• Acetic acid, 2-methoxy-, methyl ester
• Methyl 𝛼-methoxyacetate
• Methoxyacetic acid, methyl ester
• Methoxymethyl acetate (less common IUPAC-style name)
• NSC 61447
• CBC 108569

• MDL Number: MFCD00008451
• EC Number (EINECS): 228-539-9

Methyl methoxyacetate (CAS 6290-49-9) is a colorless, fruity-scented liquid used primarily as a chemical intermediate in the production of pharmaceuticals (including vitamin 𝐵6), pesticides, and dyes. It acts as a specialized solvent in perfumes and cosmetics, a reagent for syntheses, and in the manufacturing of plastics.

Key Uses and Applications

• Pharmaceutical Intermediate: Used in the synthesis of Vitamin 𝐵6 and cyclic sulfonamides.
• Chemical Synthesis: Serves as a building block for organic compounds, including 4-hydroxy-2-mercapto-5-methoxypyrimidine.
• Solvent & Additive: Employed in perfumes, cosmetics, and as a flavoring agent/additive in foods.
• Manufacturing: Utilized in the production of dyes, plastics, and pesticides.

Properties and Safety

Appearance: Colorless to slightly brown liquid.

Hazard: Flammable liquid (Category 3), causes skin and eye irritation.

Storage: Store in a cool, well-ventilated place away from ignition sources.