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Diethylene Glycol (DEG)

DEG
CAS 111-46-6 · Formula C4H10O3 · MW 106.12 g/mol

A high-boiling glycol valued where its twin hydroxyls drive both solvency and water retention. It is consumed in the production of unsaturated polyester resins, polyols for polyurethanes, and triethylene glycol, and serves as a dehydrating agent in natural-gas conditioning.

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HS Code
2909.41
At a Glance
Material Family
Glycols & Polyols
Record Type
Pure compound
Primary Role
Solvency · Viscosity Modification
Functional Roles
Solvency Viscosity Modification Moisture Control Plasticizing
INCI Name
DIETHYLENE GLYCOL
CosIng Functions
FRAGRANCEPERFUMINGSOLVENTVISCOSITY CONTROLLING
Industries Served
Agriculture Beauty & Personal Care HI&I Cleaning Oil & Gas Water Treatment
Applications & Use Cases
  • ▸ Resin intermediate: Feedstock for unsaturated polyester resins and polyurethane polyols.
  • ▸ Natural-gas dehydration: Dehydrating agent in gas conditioning.
  • ▸ Humectant: Moisture retention in tobacco, paper, and adhesive products.
  • ▸ Solvent: Dissolves dyes, nitrocellulose, oils, and resins.
  • ▸ Functional fluids: Component of antifreeze and brake-fluid formulations.
Physical Properties
Melting Point
-10 °C
Boiling Point
245 °C at 760 mmHg
Density
1.118 at 20 °C
Solubility
≥ 100 mg/mL at 20 °C
Vapor Pressure
< 0.01 mmHg at 20 °C; 0.01 mmHg at 30 °C
Flash Point
143 °C
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2909 . 41
Chapter 29
Organic chemicals
Heading 29.09
Internationally harmonized (WCO HS)
Subheading 2909.41
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
111-46-6
Molecular Formula
C4H10O3
Molecular Weight
106.12 g/mol
IUPAC Name
2-(2-hydroxyethoxy)ethanol
INCI Name
DIETHYLENE GLYCOL
PubChem CID
8117
InChI Key
MTHSVFCYNBDYFN-UHFFFAOYSA-N
Synonyms & Trade Names
DIETHYLENE GLYCOL 2,2'-Oxydiethanol 2-(2-Hydroxyethoxy)ethanol 2,2'-Oxybisethanol Diglycol Diethylenglykol Digol Bis(2-hydroxyethyl) ether 2-Hydroxyethyl ether Glycol ether Ethanol, 2,2'-oxybis- Ethylene diglycol Digenos Dicol Brecolane ndg Deactivator E Dissolvant APV 2,2'-Oxyethanol 1,5-Dihydroxy-3-oxapentane
Full Description

Diethylene glycol (CAS 111-46-6) is a hygroscopic dihydric alcohol used as an industrial solvent, humectant, and chemical intermediate. It is consumed in the production of unsaturated polyester resins, polyols for polyurethanes, and triethylene glycol, and serves as a dehydrating agent in natural-gas conditioning. It also functions as a humectant and as a component of antifreeze and brake-fluid formulations.

Frequently Asked Questions

What is diethylene glycol used for?

Diethylene glycol (DEG, CAS 111-46-6) is a hygroscopic dihydric alcohol used as an industrial solvent, humectant, and chemical intermediate. It is a feedstock for unsaturated polyester resins, polyurethane polyols, and triethylene glycol, a dehydrating agent in natural-gas conditioning, and a component of antifreeze and brake-fluid formulations. RawSource supplies it in bulk to resin, gas-processing, and functional-fluid manufacturers.

What is the difference between diethylene glycol and ethylene glycol?

Diethylene glycol (C4H10O3) is effectively two ethylene glycol units joined by an ether linkage, giving it a higher molecular weight, higher boiling point, and lower volatility than ethylene glycol. DEG is favored where higher boiling point and humectancy are needed, such as gas dehydration and resin synthesis.

What is diethylene glycol made from?

Diethylene glycol is produced as a co-product of ethylene glycol manufacture, formed by the reaction of ethylene oxide with ethylene glycol (or water), yielding the ether-linked diol C4H10O3. It is then refined to industrial grades for solvent, resin, and dehydration use.

What is the CAS number for diethylene glycol?

Diethylene glycol's CAS number is 111-46-6, formula C4H10O3, classified under HS 2909.41 (2,2'-oxydiethanol). RawSource provides a Certificate of Analysis and SDS with each bulk shipment to confirm grade.

What is the cost of bulk diethylene glycol?

Bulk DEG pricing tracks volume, packaging (drums, totes, or bulk), and freight to your destination. RawSource quotes against current supply and logistics; request a bulk quote with your target volume and ship-to for firm pricing.

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Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.

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