2,4-Dimethyl-1,3-pentadiene
2,4-Dimethyl-1,3-pentadiene (CAS 1000-86-8) is an acyclic alkene with the molecular formula (CH3)2C=CHC(CH3)=CH2 and a molar mass of 96.17 g/mol. This organic compound, supplied by Tech Serve Solutions, serves as a valuable building block in chemical synthesis. It has been utilised in scientific research to investigate the structural and spectroscopic properties of its conformational isomers. Available in high purity, it is suitable for various laboratory applications.
- Synonyms
- 1000-86-8, (CH3)2C=CHC(CH3)=CH2

Conformational Isomer Studies
2,4-Dimethyl-1,3-pentadiene has been employed in research to analyse the distinct structures and vibrational spectra of its various conformational isomers, contributing to a deeper understanding of molecular dynamics.
Organic Synthesis Building Block
As an acyclic alkene, this compound functions as a versatile building block in organic synthesis. Its reactive diene structure allows for participation in various chemical transformations and the construction of more complex molecules.
Spectroscopic Research
The compound is useful for spectroscopic investigations, particularly in studying the relationship between molecular structure and spectral characteristics, aiding in the advancement of analytical techniques.
| Molecular weight | 96.17 |
|---|---|
| Linear formula | (CH3)2C=CHC(CH3)=CH2 |
| Assay | 98% |
| Boiling point | 94 °C(lit.) |
| Density | 0.744 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.441(lit.) |
| Vapour pressure | 67 mmHg (37.7 °C) |
| Application | 2,4-Dimethyl-1,3-pentadiene has been used to study the structure of its various conformational isomers and their vibrational spectra1. |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- 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 | 10 °C / 50 °F |
| Transport (UN / ADR) | UN 3295BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38 |
| Safety statements (S) | 16-26-36/37/39 |
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 2,4-Dimethyl-1,3-pentadiene used for?
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2,4-Dimethyl-1,3-pentadiene is primarily used in chemical synthesis as a building block and in research for studying conformational isomers and their vibrational spectra.
What are the CAS number and formula for 2,4-Dimethyl-1,3-pentadiene?
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The CAS number for 2,4-Dimethyl-1,3-pentadiene is 1000-86-8, and its linear formula is (CH3)2C=CHC(CH3)=CH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,4-Dimethyl-1,3-pentadiene with an assay of 98%. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
What are the primary hazards associated with 2,4-Dimethyl-1,3-pentadiene?
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2,4-Dimethyl-1,3-pentadiene is a highly flammable liquid and vapour (H225). It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields and gloves, must be used.
How is 2,4-Dimethyl-1,3-pentadiene handled and shipped?
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This product is classified under UN 3295, Packing Group II, indicating specific requirements for handling and transportation as a hazardous material. It is exported globally by Tech Serve Solutions following strict safety protocols.
How can I request a quote or sample?
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To request a quote or a sample of 2,4-Dimethyl-1,3-pentadiene, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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