(Ethylenedioxy)dimethanol (CAS 3586-55-8), commonly referred to as EDDM or Ethylene glycol bis(semiformal), is a specialized organic compound used primarily as a fast-acting biocide and preservative. It belongs to the class of formaldehyde-releasing agents, which provide antimicrobial action by slowly releasing formaldehyde in a controlled manner. EDDM is particularly valued in the industrial sector for its high water solubility, low odor, and broad-spectrum activity against bacteria and fungi. It is a critical component in maintaining the shelf-life of water-based products, such as metalworking fluids, polymer emulsions, and adhesives.

1. Broad-Spectrum Antimicrobial Activity

• Advantage: Highly effective against a wide range of Gram-positive and Gram-negative bacteria, as well as yeast and molds.

• Benefit: Superior Product Protection: Prevents spoilage, gas formation, and unpleasant odors in aqueous systems, ensuring the quality and performance of industrial fluids.

2. Fast-Acting & Long-Lasting Preservative

• Advantage: Provides quick initial sterilization followed by sustained antimicrobial protection through controlled release.

• Benefit: Extended Fluid Life: Reduces the frequency of fluid changes in metalworking applications, lowering operational costs and waste disposal.

3. Excellent Compatibility & Low Odor

• Advantage: Miscible with water in all proportions and possesses a significantly lower odor profile compared to other formaldehyde releasers.

• Benefit: Improved Workspace Environment: Can be easily formulated into various coatings and detergents without affecting the final product's scent or color, making it more user-friendly for operators.

Metalworking Fluids

Essential preservative for soluble oils, semi-synthetic, and synthetic fluids to prevent microbial degradation and bio-corrosion.

Paints and Coatings

Used as an in-can preservative to prevent microbial growth during storage and maintain product viscosity.

Detergents and Cleaners

Added to industrial and household liquid cleaners to ensure long-term stability and hygiene.

Adhesives and Emulsions

Protects water-based glues and polymer dispersions from fungal and bacterial spoilage.

• Packaging: 200kg net weight in UN-certified plastic drums; 1000kg IBC tanks.

• Storage: Store in a cool, dry, and well-ventilated warehouse. Crucial: Keep containers tightly closed. Avoid storage at temperatures above 40 C for extended periods as this may accelerate formaldehyde release. Store away from strong acids and oxidizing agents.

EDDM; (Ethylenedioxy)dimethanol; 1,2-Bis(hydroxymethoxy)ethane; Ethylene glycol bis(semiformal).

• Ethylene Glycol (CAS 107-21-1) —— Precursor and related glycol material.

• Formaldehyde (CAS 50-00-0) —— The active antimicrobial component released by EDDM.

• Isothiazolinones (CMIT/MIT) (CAS 55965-84-9) —— Often used in combination for synergistic biocide effects.

• Triethanolamine (CAS 102-71-6) —— Commonly used in metalworking fluid formulations for pH control.

• Polymer Emulsions (e.g., VAE) (CAS 24937-78-8) —— Aqueous systems requiring EDDM preservation.

Q: Where can I find the EINECS number for (Ethylenedioxy)dimethanol?

A: The EINECS number is 222-720-6, as listed in the physical properties table.

Q: Is EDDM safe for use in all types of paints?

A: EDDM is highly compatible with most water-based coatings. However, because it releases formaldehyde, it should be checked against specific local regulations regarding VOCs and indoor air quality standards.

Q: How does EDDM compare to other biocides like MIT?

A: EDDM is often preferred for its fast-acting "knockdown" effect on bacteria. It is frequently used in rotation or combination with isothiazolinones to prevent microbial resistance.

Q: Does it affect the color of my product?

A: Our high-purity EDDM has very low color (APHA ≤ 50), so it does not typically cause yellowing in clear or white formulations.