Technical reference

EDDM (CAS 3586-55-8) — Properties & Specifications

Complete technical reference for (ethylenedioxy)dimethanol (EDDM) — chemical identity, physical properties, molecular descriptors and grade specifications. EDDM is a slow-release formaldehyde-donor biocide and non-triazine H₂S scavenger, fully miscible with water.

EDDM — (ethylenedioxy)dimethanol, CAS 3586-55-8, EINECS 222-720-6 — molecular formula C₄H₁₀O₄, molecular weight 122.12 g/mol. Colourless to pale yellow liquid, fully water-miscible, density ≈1.18–1.20 g/ml, 1% aqueous pH 6.0–8.0, total aldehyde ≥45%.

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Chemical Identity

Chemical name(Ethylenedioxy)dimethanol
AbbreviationEDDM
CAS number3586-55-8
EINECS / EC number222-720-6
Molecular formulaC₄H₁₀O₄
Molecular weight122.12 g/mol
IUPAC-style name2-(hydroxymethoxy)ethoxymethanol
InChIKeyBXGYYDRIMBPOMN-UHFFFAOYSA-N
SMILESC(OCO)COCO

Physical Properties

AppearanceColourless to pale yellow transparent liquid
Density (20°C)1.180 – 1.200 g/ml
pH (1% aqueous)6.0 – 8.0
Refractive index (20°C)1.430 – 1.443
Total aldehyde content≥45% (standard) · ≥47% (high purity)
Water solubilityFully miscible in any ratio
Flash point (formulated product)>100°C — follow grade-specific SDS

Grade Specifications

ParameterStandard (90–92%)High purity (95%)
Active content90 – 92%≥95%
Total aldehyde≥45%≥47%
pH (1% aq.)6.0 – 8.07.0 – 8.0
Density (20°C)1.180 – 1.2001.190 – 1.200

Full chemical-name and synonym listing: EDDM synonyms & chemical names.

Related Reading

Frequently Asked Questions

What is the CAS number and molecular formula of EDDM?+
EDDM — (ethylenedioxy)dimethanol — has CAS number 3586-55-8 and EINECS number 222-720-6. Its molecular formula is C₄H₁₀O₄ with a molecular weight of 122.12 g/mol.
What does EDDM look like and how soluble is it?+
EDDM is a colourless to pale yellow transparent liquid that is fully miscible with water in any ratio, and soluble in polar organic solvents. Commercial grades have a density of about 1.180–1.200 g/ml at 20°C.
What is the pH and aldehyde content of EDDM?+
A 1% aqueous solution of EDDM has a pH of about 6.0–8.0. Standard commercial grades contain ≥45% total aldehyde (as the slow-release formaldehyde reservoir); high-purity grade is ≥47%.
What is the flash point of EDDM?+
The flash point depends on the form. The formulated / aqueous commercial product typically has a flash point above 100°C. Note that pure (ethylenedioxy)dimethanol is described in reference sources as highly flammable, so always follow the specific product SDS for the grade you handle.
What are the InChIKey and SMILES for EDDM?+
The InChIKey is BXGYYDRIMBPOMN-UHFFFAOYSA-N and the SMILES notation is C(OCO)COCO. The IUPAC-style name is 2-(hydroxymethoxy)ethoxymethanol, and it is also described as 1,2-bis(hydroxymethoxy)ethane.
Which grades and packaging are available?+
EDDM is supplied in 90%, 92% and 95% active grades, in 25 kg HDPE drums, 200 kg MS drums and 1000 kg IBC tanks (≈22 MT per 20-foot FCL). Each batch ships with a certificate of analysis.

Need the COA, TDS or SDS?

Vasudev Chemo Pharma manufactures EDDM (CAS 3586-55-8) in Gujarat, India, with batch-specific certificates of analysis, technical and safety data sheets, and global export in FOB, CIF and DDP terms.

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