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