What is Butanediol Diglycidyl Ether CAS 2425-79-8?

Butanediol Diglycidyl Ether CAS 2425-79-8 is a bifunctional epoxy reactive diluent with the molecular formula C10H18O4 and molecular weight 202.25 g/mol. It is commonly called BDGE or 1,4-butanediol diglycidyl ether.

Why is BDGE used in epoxy resin formulations?

BDGE lowers the viscosity of liquid epoxy systems while retaining two epoxy groups that participate in curing, so it helps improve fiber wetting and processing without eliminating crosslink density. It is used in composites, laminates, coatings, castings and adhesives.

What are typical viscosity and epoxy equivalent weight values for CAS 2425-79-8?

Common reactive-diluent grades have a viscosity around 10-25 mPa·s at 25 C and an epoxy equivalent weight roughly 120-145 g/eq depending on the supplier grade. These values are used for formulation adjustment rather than as a single fixed specification.

How does this diluent affect cured epoxy properties?

Compared with unmodified epoxy resin, BDGE can improve flexibility, adhesion, impact resistance and thermal shock resistance. It also helps the resin wet glass or carbon fiber more quickly in vacuum infusion and other composite processes.

What handling precautions are important for Butanediol Diglycidyl Ether?

BDGE is hygroscopic and should be stored in tightly closed containers to limit moisture pickup. It is classified as harmful by oral, dermal or inhalation exposure, may irritate the skin and eyes, and can be a skin sensitizer, so proper PPE and ventilation are required.

Butanediol Diglycidyl Ether CAS 2425-79-8

Butanediol Diglycidyl Ether (BDGE), CAS 2425-79-8, is a low-viscosity bifunctional epoxy reactive diluent supplied for composites, coatings, electronic encapsulation, structural adhesives and civil engineering. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 2425-79-8
Synonyms: BDGE, 1,4-Butanediylbis(oxirane), Araldite DY 026, 1,4-Diglycidyloxybutane
Einecs: 219-371-7
Molecular Formula: C₁₀H₁₈O₄
Grade: Industrial Grade / Electronic Grade
Package: 200kg Iron Drum or 1000kg IBC Tank (Custom packaging available).

Request a quote

Share:

Product Description

Butanediol Diglycidyl Ether, CAS 2425-79-8, also called BDGE, is a bifunctional epoxy reactive diluent.

Synonyms: BDGE; 1,4-Butanediylbis(oxirane); Araldite DY 026; 1,4-Diglycidyloxybutane.

CAS: 2425-79-8.

It has a molecular weight of 202.25 g/mol and appears as a colorless to pale-yellow transparent liquid.

It has an epoxy equivalent weight of about 120–138 g/eq and a low viscosity of about 10–25 mPa·s at 25 °C.

It retains two epoxy groups that participate in curing, helping improve fiber wetting and processing without eliminating crosslink density.

It is used in wind turbine blades, automotive parts and aerospace components via vacuum infusion or RTM processes.

It is used in solvent-free epoxy floor coatings, self-leveling floors and anti-corrosion coatings.

It is used in potting compounds and casting resins for electronic components to reduce bubbles and improve penetration.

It acts as a toughening agent and diluent in structural epoxy adhesives.

It is used in concrete repair compounds and crack injection resins in civil engineering.

Compared with unmodified epoxy resin, BDGE improves flexibility, adhesion, impact resistance and thermal shock resistance.

It is hygroscopic and should be stored in tightly closed containers to limit moisture pickup.

Confirm appearance, epoxy equivalent weight, viscosity, APHA color, hydrolyzable chlorine, inorganic chlorine, water content, flash point and density.

Store in a cool, dry, well-ventilated warehouse away from direct sunlight, fire and heat sources at 5–35 °C.

Keep containers tightly closed, as the product can absorb moisture.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Butanediol Diglycidyl Ether CAS 2425-79-8?

A: Butanediol Diglycidyl Ether CAS 2425-79-8 is a bifunctional epoxy reactive diluent with the molecular formula C10H18O4 and molecular weight 202.25 g/mol. It is commonly called BDGE or 1,4-butanediol diglycidyl ether.
Q:
Why is BDGE used in epoxy resin formulations?

A: BDGE lowers the viscosity of liquid epoxy systems while retaining two epoxy groups that participate in curing, so it helps improve fiber wetting and processing without eliminating crosslink density. It is used in composites, laminates, coatings, castings and adhesives.
Q:
What are typical viscosity and epoxy equivalent weight values for CAS 2425-79-8?

A: Common reactive-diluent grades have a viscosity around 10-25 mPa·s at 25 C and an epoxy equivalent weight roughly 120-145 g/eq depending on the supplier grade. These values are used for formulation adjustment rather than as a single fixed specification.
Q:
How does this diluent affect cured epoxy properties?

A: Compared with unmodified epoxy resin, BDGE can improve flexibility, adhesion, impact resistance and thermal shock resistance. It also helps the resin wet glass or carbon fiber more quickly in vacuum infusion and other composite processes.
Q:
What handling precautions are important for Butanediol Diglycidyl Ether?

A: BDGE is hygroscopic and should be stored in tightly closed containers to limit moisture pickup. It is classified as harmful by oral, dermal or inhalation exposure, may irritate the skin and eyes, and can be a skin sensitizer, so proper PPE and ventilation are required.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

Tell us which documents your procurement team needs. Before an order, we will check whether the quoted source can provide them for the offered lot.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Ask whether samples, trial quantities or repeat orders are possible. We will check each request against the sourced product and current offer.

Storage & Shipping

Product-specific conditions are confirmed before order.

Current Language

Change Language