Methoxyacetone Handling, Preparation & Lab Use Protocol

Methoxyacetone is a low-molecular-weight, flammable ketone-ether compound (CAS 5878-19-3) widely employed as a synthetic intermediate and polar aprotic co-solvent in organic chemistry laboratories, requiring careful handling, proper storage, and adherence to established safety protocols to ensure researcher safety and experimental reproducibility.

CAS Number

5878-19-3

Molecular Formula

C₄H₈O₂

Molecular Weight

88.10 g/mol

Appearance

Colorless to pale yellow liquid

Boiling Point

~116 °C (lit.)

Flash Point

~20 °C (closed cup)

Solubility

Miscible with water and most common organic solvents

Aladdin SKU

M158844

Materials, Equipment & Safety Precautions

Before working with Methoxyacetone (Aladdin SKU: M158844, CAS 5878-19-3), assemble all required materials and review the Safety Data Sheet (SDS).

Required Materials

• Methoxyacetone (M158844)
• Amber glass storage bottles with PTFE-lined caps
• Appropriate organic-solvent-compatible syringes or pipettes
• Graduated glassware (volumetric flasks, measuring cylinders)
• Waste container labeled for halogen-free organic solvents

Personal Protective Equipment (PPE)

• Gloves: Nitrile gloves (minimum); consider butyl rubber for prolonged contact
• Eye protection: Chemical splash goggles
• Lab coat: Flame-resistant preferred given flammability
• Respiratory protection: Work in a well-ventilated fume hood; use organic vapor respirator if ventilation is inadequate

Key Safety Precautions

• Methoxyacetone is highly flammable (flash point ~20 °C). Keep away from open flames, sparks, and hot surfaces.
• Avoid inhalation of vapors; the compound has a ketone-like odor and may cause CNS effects at high concentrations.
• In case of skin or eye contact, flush immediately with copious water for at least 15 minutes and seek medical attention.
• Store in a cool, dry, well-ventilated flammable-materials cabinet, away from oxidizers and ignition sources.

Stock Solution Preparation & Dilution Procedure

This section describes preparation of a stock solution or working dilution of Methoxyacetone for use as a synthetic intermediate or co-solvent. All operations must be performed in a fume hood.

Step-by-Step Procedure

1. Condition the reagent: Allow the sealed bottle of M158844 to equilibrate to room temperature in the fume hood before opening, particularly if retrieved from cold storage.
2. Inspect the reagent: Confirm the liquid is colorless to pale yellow and free of visible particulates or cloudiness. If discoloration or precipitation is observed, do not use and contact Aladdin Scientific.
3. Measure the required volume: Using a gas-tight syringe or a PTFE-tipped dispensing pipette, transfer the desired volume of Methoxyacetone into a pre-tared, dry glass vessel. Record mass for gravimetric verification if high accuracy is required (density ~0.962 g/mL; verify against SDS/CoA).
4. Dilute if necessary: Add the appropriate volume of co-solvent (e.g., anhydrous THF, DCM, or ethanol depending on application) with stirring. Methoxyacetone is fully miscible with water and most organic solvents.
5. Mix thoroughly: Stir with a glass rod or magnetic stir bar for 2–5 minutes at room temperature until homogeneous.
6. Label the solution: Clearly label the container with compound name, SKU (M158844), concentration, solvent system, date of preparation, and preparer initials.
7. Store appropriately: Transfer to an amber glass bottle, seal tightly with a PTFE-lined cap, and store in a flammable-materials cabinet at 2–8 °C or as specified on the CoA.

Notes

• Avoid prolonged exposure of the neat liquid to air to minimize moisture uptake and oxidation.
• Prepare solutions fresh for moisture-sensitive reactions.
• Density (~0.962 g/mL) and exact purity should be confirmed from the product Certificate of Analysis (CoA) supplied with each lot.

Applications in Organic Synthesis

Methoxyacetone (1-methoxypropan-2-one) serves several roles in research and synthetic chemistry:

Synthetic Intermediate

Methoxyacetone is used as a building block in the synthesis of more complex molecules. Its bifunctional nature — containing both a ketone carbonyl and a methoxy group — allows it to participate in nucleophilic additions, condensation reactions, reductive aminations, and Wittig-type reactions to introduce the methoxyacetyl or hydroxyl-methoxy motif into target structures.

Co-solvent and Reaction Medium

Due to its miscibility with both water and a broad range of organic solvents, Methoxyacetone can function as a polar co-solvent to improve solubility of substrates in mixed-solvent reaction systems. Its moderate boiling point (~116 °C) makes it suitable for reactions requiring elevated temperatures without the excessive vapor pressure hazard of lower-boiling ketones.

Reference Standard and Analytical Use

High-purity Methoxyacetone may be employed as a reference standard in GC, HPLC, or mass spectrometry method development for food, flavor, fragrance, or environmental analytical applications where methoxyacetone is a target analyte or impurity.

Always verify suitability of M158844 for your specific application by consulting the Certificate of Analysis for purity, water content, and relevant spectroscopic data.

Storage, Stability & Waste Disposal

Storage Conditions

• Store in tightly sealed amber glass bottles in a dedicated flammable-materials storage cabinet.
• Recommended storage temperature: 2–8 °C (confirm with lot-specific CoA).
• Keep away from heat, light, moisture, oxidizing agents, strong acids, and strong bases.
• Shelf life: Refer to the expiration date on the product label and CoA. Inspect before use.

Stability

Methoxyacetone is generally stable under recommended storage conditions. However, prolonged exposure to air, moisture, or light may lead to slow oxidation or polymerization. Discard any lot showing off-color, precipitation, or unusual odor beyond its characteristic ketone smell.

Waste Disposal

• Collect spent Methoxyacetone and contaminated materials (gloves, wipes) in clearly labeled, chemically compatible waste containers designated for flammable, non-halogenated organic waste.
• Dispose of all waste in full compliance with local, national, and institutional environmental health and safety (EHS) regulations.
• Do NOT pour Methoxyacetone down the drain or into general waste bins.
• Contact your institutional EHS office or a licensed chemical waste contractor for collection and incineration.

Frequently asked questions

What is the recommended storage temperature for Methoxyacetone (M158844)?

Methoxyacetone should be stored at 2–8 °C in a tightly sealed amber glass bottle inside a flammable-materials cabinet, away from heat, light, and oxidizing agents. Always confirm the storage conditions on the lot-specific Certificate of Analysis supplied with your order.

Is Methoxyacetone miscible with water and common organic solvents?

Yes, Methoxyacetone is miscible with water and with a broad range of common organic solvents including alcohols, ketones, esters, and chlorinated solvents, making it a versatile polar co-solvent for mixed-solvent reaction systems.

What safety precautions are required when handling Methoxyacetone in the lab?

Methoxyacetone is highly flammable (flash point ~20 °C), so it must be handled away from ignition sources in a fume hood. Researchers should wear nitrile or butyl rubber gloves, chemical splash goggles, and a lab coat. In case of skin or eye contact, flush immediately with water for at least 15 minutes and seek medical advice. All waste should be disposed of as non-halogenated flammable organic waste per institutional EHS guidelines.

Can Methoxyacetone be used directly as a reaction solvent?

Methoxyacetone can serve as a polar co-solvent or neat reaction medium for certain organic transformations, particularly where its ketone and ether functionalities are compatible with the reagents involved. However, its reactivity as a ketone (e.g., enolization, nucleophilic addition) must be considered to avoid unwanted side reactions. Verify compatibility with all reaction components before use.

How should I verify the purity of a received lot of Methoxyacetone?

Each shipment of M158844 is accompanied by a Certificate of Analysis (CoA) detailing purity (typically assessed by GC), appearance, density, and other quality parameters. Review the CoA upon receipt. If required, perform in-house verification by GC or NMR. Contact Aladdin Scientific if the received material does not meet the stated specifications.

References

1. Aladdin Scientific. Methoxyacetone (M158844) Product Page and Certificate of Analysis. Shanghai: Aladdin Scientific.
2. Methoxyacetone Safety Data Sheet (SDS). CAS 5878-19-3. Prepared in accordance with GHS/OSHA HazCom 2012 standards.
3. March, J. Advanced Organic Chemistry: Reactions, Mechanisms, and Structure, 4th ed. Wiley-Interscience, 1992.
4. Clayden, J.; Greeves, N.; Warren, S. Organic Chemistry, 2nd ed. Oxford University Press, 2012.

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.