Triethylene glycol monobutyl ether
Triethylene glycol monobutyl ether (CAS: 143-22-6), with the formula CH3(CH2)3(OCH2CH2)3OH, is a technical grade glycol ether with a molecular weight of 206.28 g/mol. It is characterised by its high boiling point and density. This compound finds utility as a chemical intermediate and a building block in organic synthesis, contributing to the production of various chemical products. Its properties make it suitable for applications requiring a high-boiling solvent or coalescing agent.
- IUPAC
- Butyltriglycol

Chemical Synthesis Intermediate
Triethylene glycol monobutyl ether serves as a versatile intermediate in the synthesis of more complex organic molecules. Its reactive hydroxyl group allows for various chemical transformations, making it valuable in multi-step synthetic processes.
Organic Building Block
As an organic building block, this compound can be incorporated into larger molecular structures. It is particularly useful in creating polymers or specialty chemicals where its ether and alcohol functionalities are desired.
High-Boiling Solvent
With a boiling point ranging from 265-350 °C, Triethylene glycol monobutyl ether functions as an effective high-boiling solvent. This property is advantageous in reactions or formulations that require elevated temperatures and low volatility.
| Molecular weight | 206.28 |
|---|---|
| Linear formula | CH3(CH2)3(OCH2CH2)3OH |
| Assay | ~70% (GC) |
| Grade | technical |
| Boiling point | 265-350 °C(lit.) |
| Density | 0.990 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.441 |

Hazard statements
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 144 °C / 291.2 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 41 |
| Safety statements (S) | 26-39-46 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Triethylene glycol monobutyl ether used for?
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Triethylene glycol monobutyl ether is used as a chemical intermediate and an organic building block in synthesis, and as a high-boiling solvent.
What is the CAS number and formula for Triethylene glycol monobutyl ether?
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The CAS number is 143-22-6, and the chemical formula is CH3(CH2)3(OCH2CH2)3OH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Triethylene glycol monobutyl ether in technical grade with an assay of approximately 70% (GC). We do not represent this product as USP, BP, or EP grade.
What are the primary safety hazards associated with Triethylene glycol monobutyl ether?
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Triethylene glycol monobutyl ether is classified with the GHS symbol GHS05 and the signal word Danger, indicating it can cause serious eye damage (H318). Appropriate personal protective equipment, including eyeshields and gloves, should be worn.
How is Triethylene glycol monobutyl ether packed, shipped, and exported?
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Tech Serve Solutions is a global supplier and exporter of chemicals, offering various packaging options suitable for safe transport and export, adhering to international shipping regulations.
How can I request a sample or a quote for Triethylene glycol monobutyl ether?
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To request a sample or a quote, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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