1 witches

Structural formula
General
Surname	1 witches
other names	1-hexene
Molecular formula	C 6 H 12
Brief description	colorless liquid with a slight gasoline odor
External identifiers / databases
EC number	209-753-1
ECHA InfoCard	100,008,868
PubChem	11597
Wikidata	Q161637
properties
Molar mass	84.16 g mol −1
Physical state	liquid
density	0.67 g cm −3
Melting point	−140 ° C
boiling point	63 ° C
Vapor pressure	199 hPa (20 ° C); 303 hPa (30 ° C); 448 hPa (40 ° C); 644 hPa (50 ° C);
solubility	practically insoluble in water (50 mg l −1 at 20 ° C)
Refractive index	1.3852 (25 ° C)
safety instructions
H and P phrases	H: 225-304
	EUH: 066
	P: 210-243-280-301 + 310-331-403 + 233
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

1-Hexen (stress on the second syllable) is a petrol-like smelling, colorless liquid. It belongs to the group of alkenes (more precisely the hexenes ) with the empirical formula C ₆ H ₁₂ . This group forms a total of 18 isomers .

Occurrence

1-hexene is a component of petroleum cracking products .

properties

1-Hexene is a colorless liquid that boils at 63 ° C under normal pressure . According to Antoine, the vapor pressure function results from log ₁₀ (P) = A− (B / (T + C)) (P in bar, T in K) with A = 3.99063, B = 1152.971 and C = −47.301 in the temperature range from 289 to 337 K. The liquid is almost insoluble in water. 1-hexene forms highly flammable vapor-air mixtures. The compound has a flash point of −26 ° C. The lower explosion limit (LEL) is 1.2% by volume. The ignition temperature is 255 ° C. The substance therefore falls into temperature class T3.

use

1-Hexene is used as a comonomer in the production of polyethylene (LLDPE) to produce short-chain branches and is used as a starting material for numerous chemical reactions (e.g. of linear aldehydes through oxo synthesis ).

safety instructions

Witches are very irritating to the eyes and respiratory tract on direct contact and in a gaseous state . Witches are narcotic in high doses. Hexen is slightly hazardous to water (WGK 1). Witches degreases the skin.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on 1-Hexen in the GESTIS substance database of the IFA , accessed on September 11, 2017(JavaScript required) .
↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-282.
↑ Forziati, aF; Camin, DL; Rossini, FD: Density, refractive index, boiling point, and vapor pressure of eight monoolefin (1-alkenes), six pentadiene, and two cyclomonoolefin hydrocarbons in J. Res. NBS 45 (1950) 406-410.
^ E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on 1-Hexen in the GESTIS substance database of the IFA , accessed on September 11, 2017(JavaScript required) .

[CRC90_3_282-2] David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-282.

[3] Forziati, aF; Camin, DL; Rossini, FD: Density, refractive index, boiling point, and vapor pressure of eight monoolefin (1-alkenes), six pentadiene, and two cyclomonoolefin hydrocarbons in J. Res. NBS 45 (1950) 406-410.

[Brandes-4] E. Brandes, W. Möller: Safety-related parameters - Volume 1: Flammable liquids and gases , Wirtschaftsverlag NW - Verlag für neue Wissenschaft GmbH, Bremerhaven 2003.