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4-Methylbenzaldehyde

From Wikipedia, the free encyclopedia
4-Methylbenzaldehyde
Names
Preferred IUPAC name
4-Methylbenzaldehyde
Other names
p-Tolualdehyde; p-Tolylaldehyde
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.002.952 Edit this at Wikidata
KEGG
UNII
  • InChI=1S/C8H8O/c1-7-2-4-8(6-9)5-3-7/h2-6H,1H3 checkY
    Key: FXLOVSHXALFLKQ-UHFFFAOYSA-N checkY
  • InChI=1/C8H8O/c1-7-2-4-8(6-9)5-3-7/h2-6H,1H3
    Key: FXLOVSHXALFLKQ-UHFFFAOYAK
  • CC1=CC=C(C=C1)C=O
  • O=Cc1ccc(C)cc1
Properties
C8H8O
Molar mass 120.14852
Appearance colorless liquid
Density 1.019 g/mL (25 °C)
Melting point −6.00 °C (21.20 °F; 267.15 K)
Boiling point 204 to 205 °C (399 to 401 °F; 477 to 478 K)
1.545 (20 °C)
Hazards
Safety data sheet (SDS) [1]
Related compounds
Related compounds
Benzaldehyde
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

4-Methylbenzaldehyde is the aromatic aldehyde with the formula CH3C6H4CHO. It is a colorless liquid. Commercially available, it may be prepared from the Friedel-Crafts formylation of toluene with carbon monoxide and hydrogen chloride under Gattermann-Koch conditions.[1] 4-Methylbenzaldehyde has a cherry-like scent similar to benzaldehyde, and finds some use in the fragrance industry.

4-Methylbenzaldehyde is a precursor to terephthalic acid, which is used to make various plastics.[2]

References

[edit]
  1. ^ Coleman, G. H.; Craig, David (1932). "p-Tolualdehyde". Org. Synth. 12: 80. doi:10.15227/orgsyn.012.0080; Coll. Vol., vol. 2, 1943, p. 583.
  2. ^ Brühne, Friedrich; Wright, Elaine (2011). "Benzaldehyde". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a03_463.pub2. ISBN 978-3-527-30385-4.