Name | trans-2-hexen-1-ol |
Synonyms | AI3-34792 BRN 1719709 UNII-BVP79C4821 trans-2-Hexenol (E)-2-Hexen-1-ol 2-Hexen-1-ol, (E)- trans-2-hexen-1-ol (2E)-hex-2-en-1-ol trans-Hex-2-en-1-ol 2-Hexen-1-ol, (2E)- 2-Hexen-1-ol, trans- trans-2-Hexenol (natural) 4-01-00-02138 (Beilstein Handbook Reference) |
CAS | 928-95-0 |
EINECS | 213-191-2 |
InChI | InChI=1/C6H12O/c1-2-3-4-5-6-7/h4-5,7H,2-3,6H2,1H3/b5-4+ |
Molecular Formula | C6H12O |
Molar Mass | 100.159 |
Density | 0.843g/cm3 |
Melting Point | 54.63°C |
Boling Point | 159.6°C at 760 mmHg |
Flash Point | 61.7°C |
Water Solubility | SLIGHTLY SOLUBLE |
Vapor Presure | 0.873mmHg at 25°C |
Appearance | Form Liquid, color Clear colorless |
pKa | 14.45±0.10(Predicted) |
Storage Condition | 2-8°C |
Stability | Stable. Flammable. Incompatible with strong oxidizing agents, strong acids. |
Refractive Index | 1.442 |
Physical and Chemical Properties | The chemical properties are almost colorless liquids. It has a strong smell of immature fruits. Boiling point 158 ℃, flash point 53.9 ℃. Soluble in ethanol, propylene glycol and most non-volatile oils, very slightly soluble in water. |
Use | Uses GB 2760-96 provides for the permitted use of flavorants. Mainly used for the preparation of Apple and other fruit flavor |
Hazard Symbols | Xi - Irritant |
Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
UN IDs | UN 1987 |
WGK Germany | 2 |
RTECS | MP8390000 |
TSCA | Yes |
HS Code | 29052900 |
Hazard Class | 3 |
Packing Group | III |
FEMA | 2562 | 2-HEXEN-1-OL |
BRN | 1719709 |
NIST chemical information | 2-Hexen-1-ol, (E)-(928-95-0) |
EPA chemical information | (E)-2-Hexen-1-ol (928-95-0) |
overview
trans -2-hexenol is a volatile component of tea, which was detected in tea in 1966. Colorless liquid, slightly soluble in water, soluble in organic solvents such as ethanol, boiling point 155 ℃, relative density 0.8498 (16/4 ℃), refractive index 1.4367 (20 ℃), showing strong grass odor. It exists in fresh tea leaves and finished tea. The content of tea leaves in withering stage increases sharply, and then decreases with fermentation and drying.
application
Trans-2-hexenol can be used to synthesize a compound E10, E12-hexadecadienal in the sex pherin of bean wild borer.
content analysis
Gas chromatographic analysis with polar columns as GT-10-4.
Toxicity
GRAS(FEMA).
LD50 3500mg/kg (rat, oral).
use limited
FEMA(mg/kg): soft drink 1.0; Cold drink 0.63; Candy 3.8; Baked food 4.1.
Moderate limit (FDA & sect;172.515,2000).
production method
Catalytic reduction of 3-hexynyl-1-ol by Pd-CaCO3 to obtain a mixture of cis and trans, and then fractionated.
It is obtained by reducing 2,4-hexadienoic acid with metal sodium and ethanol.