2-Pentyne
2-Pentyne (CAS 627-21-4, CH3C≡CCH2CH3) is an organic alkyne with a molecular weight of 68.12 g/mol. This volatile liquid, boiling at 56-57 °C, is primarily utilised as a building block in organic synthesis and chemical research. Its characteristic triple bond allows for various addition reactions, making it a useful intermediate in the development of more complex organic molecules. Tech Serve Solutions supplies 2-Pentyne for laboratory and research applications.

Catalyst Research
2-Pentyne has been employed in studies evaluating the catalytic efficacy of novel nanoparticle materials. For instance, it was used to test palladium nanoparticles supported on bacterial biomass, demonstrating its utility in assessing catalyst performance.
Organic Synthesis Intermediate
As an alkyne, 2-Pentyne serves as a valuable building block in organic chemistry. Its triple bond readily undergoes addition reactions, facilitating the synthesis of diverse carbon frameworks and functionalised organic compounds.
Chemical Research Reagent
This compound is utilised in academic and industrial research laboratories for exploring new synthetic methodologies and reaction pathways. Its defined structure makes it suitable for investigating alkyne reactivity.
| Molecular weight | 68.12 |
|---|---|
| Linear formula | CH3C≡CCH2CH3 |
| Assay | 98% |
| Boiling point | 56-57 °C(lit.) |
| Density | 0.71 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.404(lit.) |
| Vapour pressure | 393 mmHg (37.7 °C) |
| Melting point | −109 °C(lit.) |
| Application | 2-Pentyne was used to test the catalytic activity of nanoparticles of palladium supported on bacterial biomass, bio-Pd1. |


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) |
|---|---|
| Flash point | -31 °C / -23.8 °F |
| Transport (UN / ADR) | UN 3295BE 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-Pentyne used for?
+
2-Pentyne is used as a building block in organic synthesis, a reagent in chemical research, and has been utilised in studies for evaluating the catalytic activity of nanoparticles.
What are the CAS number and formula for 2-Pentyne?
+
The CAS number for 2-Pentyne is 627-21-4, and its linear formula is CH3C≡CCH2CH3.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 2-Pentyne with a minimum assay of 98%. This product is intended for research and laboratory use and is not represented as USP, BP, EP, or any other pharmacopoeial grade.
How should 2-Pentyne be handled safely?
+
2-Pentyne is highly flammable (H225) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle in a well-ventilated area, away from ignition sources, wearing appropriate personal protective equipment including eyeshields and gloves. Use a full-face respirator if necessary.
How is 2-Pentyne shipped and exported?
+
2-Pentyne is classified under UN 3295, Packing Group II, for transport. Tech Serve Solutions is an experienced global supplier and exporter of fine chemicals, adhering to all relevant shipping regulations.
How can I request a quote or sample for 2-Pentyne?
+
To request a quote or a sample of 2-Pentyne, please contact our sales team through the website or by phone, providing your specific requirements.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis