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Description
4-Pentyn-2-ol is used in Quantitative structure activity relationship (QSAR) studies pertaining to toxic levels of organic compounds in environmental situations. It is also used in the preparation of Fischer-type rhenium(III) benzoyldiazenido-2-oxacyclocarbenes. Further, it is used in the preparation of C-aryl glycosides by undergoing cycloaddition reaction with an aryl nitrile oxide.
This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.
4-Pentyn-2-ol is used in Quantitative structure activity relationship (QSAR) studies pertaining to toxic levels of organic compounds in environmental situations. It is also used in the preparation of Fischer-type rhenium(III) benzoyldiazenido-2-oxacyclocarbenes. Further, it is used in the preparation of C-aryl glycosides by undergoing cycloaddition reaction with an aryl nitrile oxide.
Solubility
Miscible with chloroform and ethyl acetate.
Notes
Incompatible with strong oxidizing agents, acid chlorides and acid anhydrides.

Specifications
Specifications
Density | 0.892 |
Boiling Point | 126°C to 127°C |
Flash Point | 37°C (98°F) |
Molecular Formula | C7H14OSi |
Refractive Index | 1.438 |
Quantity | 5 g |
UN Number | UN1987 |
Beilstein | 1734245 |
Synonym | 4-trimethylsilyl-3-butyn-1-ol, 4-trimethylsilyl but-3-yn-1-ol, 3-butyn-1-ol, 4-trimethylsilyl, 4-trimethylsilyl-3-butyne-1-ol, 1-trimethylsilyl-1-butyn-4-ol, 3-butyn-1-ol,4-trimethylsilyl |
Solubility Information | Miscible with chloroform and ethyl acetate. |
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Safety and Handling


- 4-Pentyn-2-ol
- Warning
- Acute toxicity Category 4
- Serious eye damage/eye irritation Category 2
- Flammable liquid Category 3
- Skin corrosion/irritation Category 2
- Specific target organ toxicity Category 3
- H226-Flammable liquid and vapour.
- H302-Harmful if swallowed.
- H312-Harmful in contact with skin.
- H315-Causes skin irritation.
- H319-Causes serious eye irritation.
- H332-Harmful if inhaled.
- H335-May cause respiratory irritation.
- P210-Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
- P280-Wear protective gloves/protective clothing/eye protection/face protection.
- P301+P312-IF SWALLOWED: Call a POISON CENTER or doctor/physician/ if you feel unwell.
- P302+P352-IF ON SKIN: Wash with plenty of water/soap.
- P304+P340-IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- MIXTURE LIST-Contains : Pent-4-yn-2-ol
RUO – Research Use Only
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