Description

1,1-Dimethoxyethene is a versatile acetal derivative of acetaldehyde, widely recognized as a key reagent in organic synthesis. Its primary value lies in its role as a highly effective protecting group for carbonyls and as a precursor for vinyl ethers, enabling critical transformations in complex molecule construction. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries, where it facilitates the synthesis of active ingredients and advanced intermediates.

Application

• Pharmaceutical Synthesis: Used as a protecting group for aldehydes and ketones in multi-step synthesis of active pharmaceutical ingredients (APIs).
• Agrochemical Manufacturing: Serves as a key intermediate in the production of certain herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Acts as a monomer or co-monomer precursor for specialty polymers and resins, including those with specific solubility or adhesion properties.
• Fine Chemical Production: Employed in the synthesis of fragrances, flavors, and other high-value specialty chemicals requiring acetal or vinyl ether functionalities.
• Organic Synthesis Reagent: Functions as a versatile reagent for acetalization reactions and as a source of the vinyloxy group in nucleophilic additions and cycloadditions.
• Cross-coupling Reactions: Utilized as a substrate in palladium-catalyzed cross-coupling reactions to form carbon-carbon bonds.

Basic Information

Product Name	1,1-Dimethoxyethene
CAS No.	922-69-0
Molecular Formula	C4H8O2
Molecular Weight	88.11 g/mol
Synonyms	Acetaldehyde Dimethyl Acetal; Dimethyl Acetal; 1,1-Dimethoxyethylene; Ethylidene Dimethyl Ether; Vinylal Dimethyl Ether; Dimethoxyethene; Acetaldehyde, Dimethyl Acetal; EINECS 213-076-1
EINECS	213-076-1

Quality Control

Our 1,1-Dimethoxyethene is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) for purity and identity confirmation, to ensure it meets the high standards required for synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat, sparks, and open flames. Due to its highly volatile nature, containers must be kept tightly sealed when not in use to prevent evaporation and maintain product integrity. Recommended storage temperature is 2-8°C (refrigerated) for extended stability.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	0.85 - 0.87 g/mL
Refractive Index (n20/D)	1.370 - 1.374

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.