2-(2-Butoxyethoxy)ethanol (DEB): Properties, Safety & Lab Use

2-(2-Butoxyethoxy)ethanol（DEB） is a mild-smelling glycol ether solvent that is miscible with ethanol and diethyl ether and soluble in water, a broad range of organic solvents, and oils, making it a versatile reagent for research and industrial formulation applications.

Chemical Name

2-(2-Butoxyethoxy)ethanol

Common Abbreviation

DEB

Odor

Faint butanol-like odor

Solubility

Readily soluble in ethanol and diethyl ether; soluble in water, other organic solvents, and oils

Oral LD₅₀ (rat)

6.56 g/kg

Hazard Classification

Irritant

Aladdin SKU

B1530163

Chemical Identity and Physical Properties

2-(2-Butoxyethoxy)ethanol (DEB, also known as diethylene glycol monobutyl ether) is a member of the glycol ether family. It is characterised by a faint butanol-like odour and presents as a colourless, hygroscopic liquid at room temperature. Its amphiphilic molecular structure — combining a hydrophilic polyether backbone with a lipophilic butyl tail — confers an unusually broad solvency profile.

Key physicochemical attributes include miscibility with common polar organic solvents (ethanol, diethyl ether) and solubility in water as well as non-polar oils, positioning DEB as a coupling or co-solvent in multi-phase formulations. Researchers should store the compound in tightly sealed containers away from heat and strong oxidising agents to preserve quality.

Solubility and Formulation Applications

DEB's miscibility with both aqueous and non-aqueous phases makes it particularly valuable in the preparation of research formulations. It dissolves readily in ethanol and diethyl ether, and is also soluble in water, diverse organic solvents, and oils. This wide solubility window enables its use as a coupling agent to homogenise otherwise immiscible components.

Typical laboratory applications include use as a high-boiling polar solvent for ink and coating studies, a carrier solvent in biological assay development, and a component in cleaning solution research. When preparing aqueous dilutions, DEB should be added gradually with stirring to ensure uniform mixing. For sensitive biological assays, validate solvent compatibility and perform appropriate vehicle controls.

Safety, Handling and Storage Guidelines

DEB is classified as an irritant. It may cause irritation to the skin, eyes, and respiratory tract upon direct contact or prolonged exposure. The oral median lethal dose (LD₅₀) in rats has been reported as 6.56 g/kg, indicating relatively low acute oral toxicity; however, routine laboratory safety precautions must still be observed.

Personal Protective Equipment (PPE): Wear chemical-resistant gloves (e.g., nitrile), safety goggles, and a laboratory coat when handling DEB. Use in a well-ventilated area or fume hood to minimise inhalation of vapours.

First Aid: In case of skin contact, wash thoroughly with soap and water. For eye contact, immediately irrigate with copious amounts of water and seek medical advice. If inhaled in significant quantities, move to fresh air promptly.

Storage: Store in a cool, dry, well-ventilated location in tightly closed containers. Keep away from strong oxidising agents, heat sources, and open flames. Dispose of waste in accordance with local environmental regulations.

Quality, Purity and Procurement

Aladdin Scientific supplies 2-(2-Butoxyethoxy)ethanol (DEB) under SKU B1530163. Researchers and procurement managers should request the certificate of analysis (CoA) for each lot to confirm purity grade, water content, and any applicable spectral data prior to use in critical applications.

When specifying DEB for procurement, confirm the required purity tier (e.g., reagent grade vs. HPLC grade) to ensure suitability for the intended application. For regulatory or quality-controlled studies, retain the CoA and safety data sheet (SDS) as part of the experimental documentation. Contact Aladdin Scientific technical support for bulk quantity inquiries, custom packaging, or application-specific grade recommendations.

Frequently asked questions

What solvents is 2-(2-Butoxyethoxy)ethanol (DEB) compatible with?

DEB is readily miscible with ethanol and diethyl ether and is also soluble in water, a wide range of organic solvents, and oils. This broad compatibility makes it an effective coupling or co-solvent in complex formulations.

What is the oral LD₅₀ of DEB in rats, and what does it indicate about its acute toxicity?

The oral LD₅₀ of DEB in rats is 6.56 g/kg, which places it in the category of relatively low acute oral toxicity. Nevertheless, DEB is an irritant and standard laboratory precautions — including gloves, goggles, and adequate ventilation — should always be observed.

How should DEB be stored in the laboratory?

DEB should be stored in tightly sealed containers in a cool, dry, and well-ventilated area, away from strong oxidising agents, heat sources, and open flames. Adhering to these conditions helps maintain product integrity and minimises safety risks.

What personal protective equipment (PPE) is recommended when handling DEB?

When handling DEB, researchers should wear chemical-resistant gloves (such as nitrile gloves), safety goggles, and a laboratory coat. Operations should be performed in a fume hood or well-ventilated area to avoid inhalation of vapours.

How can I obtain a Certificate of Analysis (CoA) for Aladdin DEB (B1530163)?

You can request the Certificate of Analysis for DEB (SKU B1530163) directly from Aladdin Scientific by contacting the technical support or customer service team, or by accessing the product page on the Aladdin Scientific website where lot-specific CoAs may be available for download.

References

1. Aladdin Scientific Product Data Sheet: 2-(2-Butoxyethoxy)ethanol (DEB), SKU B1530163.
2. European Chemicals Agency (ECHA). Diethylene glycol monobutyl ether — Substance information. [General textbook-level reference for glycol ether class properties.]
3. Patty's Industrial Hygiene and Toxicology (textbook reference for glycol ether LD₅₀ values and irritancy classification).

Products are supplied for research and development use only. Not for use in humans, animals, diagnosis, or therapy.