| Identification | More | [Name]
5-HEXEN-1-OL | [CAS]
821-41-0 | [Synonyms]
5-HEXEN-1-OL
6-HYDROXY-1-HEXENE
1-Hexen-6-ol
5-hexenol
Hex-5-en-1-ol
5-Hexen-1-ol, 97+%
5-HEXEN-1-OL 99% | [EINECS(EC#)]
212-477-4 | [Molecular Formula]
C6H12O | [MDL Number]
MFCD00002981 | [Molecular Weight]
100.16 | [MOL File]
821-41-0.mol |
| Chemical Properties | Back Directory | [Appearance]
CLEAR COLOURLESS LIQUID | [Melting point ]
<-20°C | [Boiling point ]
78-80 °C/25 mmHg (lit.) | [density ]
0.834 g/mL at 25 °C(lit.)
| [FEMA ]
4351 | 5-HEXENOL | [refractive index ]
n20/D 1.435(lit.)
| [Fp ]
117 °F
| [storage temp. ]
Flammables area | [solubility ]
18.6g/l | [form ]
Liquid | [pka]
15.17±0.10(Predicted) | [color ]
Clear colorless | [Specific Gravity]
0.846 | [Odor]
green | [PH]
7 (H2O) | [biological source]
synthetic | [Odor Type]
green | [Water Solubility ]
Miscible with water. | [JECFA Number]
1623 | [BRN ]
1236458 | [Stability:]
Volatile | [InChIKey]
UIZVMOZAXAMASY-UHFFFAOYSA-N | [LogP]
1.50 | [CAS DataBase Reference]
821-41-0(CAS DataBase Reference) | [EPA Substance Registry System]
5-Hexen-1-ol (821-41-0) |
| Safety Data | Back Directory | [Hazard Codes ]
F | [Risk Statements ]
R10:Flammable. | [Safety Statements ]
S16:Keep away from sources of ignition-No smoking . | [RIDADR ]
UN 1987 3/PG 3
| [WGK Germany ]
1
| [F ]
9 | [Hazard Note ]
Flammable | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
III | [HS Code ]
29052290 |
| Hazard Information | Back Directory | [Chemical Properties]
CLEAR COLOURLESS LIQUID | [Chemical Properties]
Colorless liquid; green aroma.
| [Uses]
5-Hexen-1-ol(821-41-0) is used in cyclization to a tetrahydropyran by phenylselenoetherification. It is also used as a building block in synthetic chemistry. Further, it is used to prepare 6-bromo-hex-1-ene by reaction with phosphorus tribromide.
| [Application]
5-Hexen-1-ol is used as a food flavouring agent and as a raw material in organic synthesis for cyclisation to other compounds such as tetrahydropyran via phenylselenide etherification. | [Preparation]
5-hexen-1-ol may be prepared from 2-(chloromethyl)tetrahydropyran according to the literature procedure for the preparation of 4-penten-1-ol (Brooks, L. A.; Snyder, H. R. Org. Synth. Coll. Vol. III 1955, 698). | [Aroma threshold values]
Medium strength odor; recommend smelling in a 10.00% solution or less
| [Synthesis]
6-bromo-1-hexene is used as a raw material, and tetrabutylammonium bromide is used as a catalyst. In an acetonitrile solvent, it is heated to react with potassium acetate. The mixed solution is then cooled to room temperature (18-25°C), the reaction solution is concentrated under reduced pressure, and then water is added to dissolve; methyl tert-butyl ether is added and stirred to separate the layers, the water layer is extracted once with methyl tert-butyl ether, the organic phases are combined and filtered, and the filtrate is concentrated under reduced pressure. The concentrated solution begins to hydrolyze, and 15% alkaline aqueous solution and methanol are added to the concentrated solution. The mixture is stirred at room temperature to dissolve each other; after the hydrolysis is completed, the methanol is concentrated under reduced pressure. After concentration to dryness, the system begins to separate into layers, with an upper organic phase and a lower aqueous phase. The aqueous phase is extracted twice with dichloromethane, and the combined organic phases are concentrated under reduced pressure to obtain 5-Hexen-1-ol.
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| Questions And Answer | Back Directory | [Background]
Enol is an important fine chemical, such as isophytol, folyl alcohol, etc. It can be further used as a critical intermediate for synthesizing medicines, pesticides, essences, spices and the like with high economic added values. It has a large market demand. 5-Hexen-1-ol is a common organic synthesis and medical intermediate and an essential raw material for chemical engineering and medicine.
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