5-HEXYN-3-OL
Synonym(s):1-Hexyn-4-ol;4-Hydroxy-1-hexyne
- CAS NO.：19780-84-8
- Empirical Formula: C6H10O
- Molecular Weight: 98.14
- MDL number: MFCD00041593
- EINECS: 243-304-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 05:03:39
What is 5-HEXYN-3-OL?
Purification Methods
Purify the hexynol by fractionation in a vacuum. The carbamoyl derivative (prepared by reaction with COCl2/toluene followed by NH3) is crystallised by dissolving in the minimum volume of toluene and adding excess of pet ether (b 40-60o ) and has m 70-71o. [L.nger et al. Helv Chim Acta 42 2379 1959, Beilstein 1 IV 2235.]
Properties of 5-HEXYN-3-OL
| Melting point: | -34°C (estimate) |
| Boiling point: | 73-76°C 60mm |
| Density | 0.886 g/mL at 25 °C |
| refractive index | 1.4430 |
| Flash point: | 21°C |
| storage temp. | 2-8°C |
| form | clear liquid |
| pka | 14.29±0.20(Predicted) |
| color | Colorless to Light orange to Yellow |
| BRN | 1698904 |
| EPA Substance Registry System | 5-Hexyn-3-ol (19780-84-8) |
Safety information for 5-HEXYN-3-OL
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H226:Flammable liquids H302:Acute toxicity,oral H318:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P240:Ground/bond container and receiving equipment. P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 5-HEXYN-3-OL
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