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18720 1,5-Hexadiyne, 50% in pentane

CAS Number

Stock No. Size Price ($) Quantity Availability
18720-04 2g 98.10
18720-09 10g 358.00
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1,5-Hexadiyne, 50% in pentane


Chemical Properties

Formula Weight
Liquid, Packaged under argon
Flash Point
Storage & Sensitivity
Ambient temperatures.
Immiscible with water.


1,5-Hexadiyne is used in the preparation of bisdehydro[12]annulene and biphenylene. It is also used as an important starting material in the preparation of (5Z,9Z)-5,9-hexadecadienoic acid. Further, it is involved in the preparation of linear organotin polymers by reaction with organotin dihydrides.


Incompatible with oxidizing agents.

Literature References

Lau, Y. H.; Wu, Y.; de Andrade, P.; Galloway, W. R. J. D.; Spring, D. R. A two-component'double-click'approach to peptide stapling. Nat. Protoc. 2015, 10 (4), 585-594.

Lau, Y. H.; De Andrade, P.; Wu, Y.; Spring, D. R. Peptide stapling techniques based on different macrocyclisation chemistries. Chem. Soc. Rev. 2015, 44 (1), 91-102.

GHS Hazard and Precautionary Statements

Hazard Statements: H225-H304-H315-H319-H336

Highly flammable liquid and vapour. May be fatal if swallowed and enters airways. Causes skin irritation. Causes serious eye irritation. May cause drowsiness or dizziness.

Precautionary Statements: P210-P233-P235-P240-P241-P242-P243-P264b-P271-P280-P301+P310-P303+P361+P353-P304+P340-P305+P351+P338-P312-P331-P332+P313-P363-P370+P378q-P501c

Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep container tightly closed. Keep cool. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting/ equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. Do NOT induce vomiting. If skin irritation occurs: Get medical advice/attention. Wash contaminated clothing before reuse. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


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