4-Methylbenzaldehyde

4-Methylbenzaldehyde
Names
	Preferred IUPAC name 4-Methylbenzaldehyde
	Other names p-Tolualdehyde; p-Tolylaldehyde
Identifiers
CAS Number	104-87-0 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:28617 ;
ChEMBL	ChEMBL190927 ;
ChemSpider	13865424 ;
ECHA InfoCard	100.002.952
KEGG	C06758 ;
PubChem CID	7725;
UNII	GAX22QZ28Q ;
CompTox Dashboard (EPA)	DTXSID9041520 ;
	InChI InChI=1S/C8H8O/c1-7-2-4-8(6-9)5-3-7/h2-6H,1H3 Key: FXLOVSHXALFLKQ-UHFFFAOYSA-N ; InChI=1/C8H8O/c1-7-2-4-8(6-9)5-3-7/h2-6H,1H3 Key: FXLOVSHXALFLKQ-UHFFFAOYAK;
	SMILES CC1=CC=C(C=C1)C=O; O=Cc1ccc(C)cc1;
Properties
Chemical formula	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)
Refractive index (nD)	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). verify (what is ?) Infobox references

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

^ 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.
^ 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.