Ethylmethylbenzenes

Ethylmethylbenzenes
Surname	1,2-ethylmethylbenzene	1,3-ethylmethylbenzene	1,4-ethylmethylbenzene
other names	o -ethylmethylbenzene o -ethyltoluene	m -ethylmethylbenzene m -ethyltoluene	p -ethylmethylbenzene p -ethyltoluene
Structural formula
CAS number	611-14-3	620-14-4	622-96-8
	25550-14-5 (mixture of isomers)
PubChem	11903	12100	12160
Molecular formula	C 9 H 12
Molar mass	120.19 g mol −1
Physical state	liquid
Brief description	colorless liquid
Melting point	−80.83 ° C	−96.55 ° C	−62.35 ° C
boiling point	165.2 ° C	161.3 ° C	162.1 ° C
solubility	insoluble in water
GHS labeling	danger	Caution	danger
H and P phrases	226-304	226-411	226-304
	no EUH phrases	no EUH phrases	no EUH phrases
	301 + 310-331	210-273	301 + 310-331

The ethylmethylbenzenes (also ethyltoluenes ) form a group of substances in organic chemistry , the structure of which consists of a benzene ring with an ethyl  (–CH ₂ –CH ₃ ) and a methyl group  (–CH ₃ ) as substituents . Their different arrangement on the ring results in three constitutional isomers with the empirical formula C ₉ H ₁₂ . They also belong to the group of C ₃ benzenes .

properties

The p isomer, which has the highest symmetry, has the highest melting point.

Web links

Commons : Ethylmethylbenzenes  - Collection of pictures, videos and audio files

Individual evidence

1. ↑ ^{a b c d e f} CRC Handbook of Tables for Organic Compound Identification , Third Edition, 1984, ISBN 0-8493-0303-6 .
2. ↑ Entry for CAS no. 611-14-3 in the GESTIS substance database of the IFA , accessed on July 2, 2013(JavaScript required) .
3. ↑ Entry for CAS no. 620-14-4 in the GESTIS substance database of the IFA , accessed on July 2, 2013(JavaScript required) .
4. ↑ Entry for CAS no. 622-96-8 in the GESTIS substance database of the IFA , accessed on July 2, 2013(JavaScript required) .