Di-n-butylacetaldehyde
Di-n-butylacetaldehyde (CAS: 18459-51-3) is a chemical compound with the formula CH3(CH2)3CH(CHO)(CH2)3CH3 and a molecular weight of 156.27 g/mol. This aldehyde serves as a valuable building block in organic synthesis. Its specific structure makes it useful in the development of more complex molecules across various chemical research and industrial applications.

Organic Synthesis Intermediate
Di-n-butylacetaldehyde acts as a reactive intermediate, enabling the formation of carbon-carbon bonds and the introduction of specific functional groups in organic reactions. It is a key component in multi-step synthesis pathways for speciality chemicals.
Research and Development
Utilised in academic and industrial research laboratories, this compound aids in exploring new synthetic methodologies and creating novel chemical entities. Its predictable reactivity makes it a reliable reagent for developing new materials and compounds.
Speciality Chemical Manufacturing
This aldehyde can be a precursor for the synthesis of various speciality chemicals, including those with potential applications in fragrance or material science. The compound's structure offers flexibility in downstream chemical modifications.
| Molecular weight | 156.27 |
|---|---|
| Linear formula | CH3(CH2)3CH(CHO)(CH2)3CH3 |
| Assay | 98% |
| Boiling point | 85 °C/10 mmHg(lit.) |
| Refractive index | n20/D 1.4260(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 36 °C / 96.8 °F |
| Transport (UN / ADR) | UN 1989C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| Safety statements (S) | 16-26-36/37 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Bulk Density | 0.820 g/mL |
|---|
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 Di-n-butylacetaldehyde used for?
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Di-n-butylacetaldehyde is primarily used as an intermediate in organic synthesis and in research and development for creating new chemical entities and exploring synthetic methodologies.
What are the CAS number and chemical formula for Di-n-butylacetaldehyde?
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The CAS number is 18459-51-3 and the chemical formula is CH3(CH2)3CH(CHO)(CH2)3CH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Di-n-butylacetaldehyde with an assay of 98%. TSS does not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should Di-n-butylacetaldehyde be handled safely?
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Di-n-butylacetaldehyde is a flammable liquid and vapour (H226) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, in a well-ventilated area, away from ignition sources.
How is Di-n-butylacetaldehyde packed and shipped?
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Di-n-butylacetaldehyde is packed according to UN 1989C 3 / PGIII regulations for safe transport. TSS offers global export services for this chemical.
How can I request a sample or quote for Di-n-butylacetaldehyde?
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Please contact our sales team or use the online inquiry form on our website to request a sample or a quote for Di-n-butylacetaldehyde.
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