Terephthalaldehyde

Terephthalaldehyde
Names
	Other names 1,4-Benzenedialdehyde ; 1,4-Diformylbenzene
Identifiers
CAS Number	623-27-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	11673;
ECHA InfoCard	100.009.805
EC Number	210-784-8;
PubChem CID	12173;
UNII	M2Y6E4N2TS;
CompTox Dashboard (EPA)	DTXSID6060769 ;
	InChI InChI=1S/C8H6O2/c9-5-7-1-2-8(6-10)4-3-7/h1-6H Key: KUCOHFSKRZZVRO-UHFFFAOYSA-N;
	SMILES C1=CC(=CC=C1C=O)C=O;
Properties
Chemical formula	C8H6O2
Molar mass	134.132
Appearance	white to beige
Density	1.06 g/mL
Melting point	114–117 °C (237–243 °F; 387–390 K)
Boiling point	245-248
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H302, H311, H315, H319, H335
Precautionary statements	P261, P280, P304+P340, P305+P351+P338, P405, P501
Flash point	76 °C
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Terephthalaldehyde (TA) is an organic compound with the formula C₆H₄(CHO)₂. It is one of three isomers of benzene dicarboxaldehyde, in which the aldehyde moieties are positioned in the para conformation on the benzene ring. Terephthalaldehyde appears as a white to beige solid, typically in the form of a powder. It is soluble in many organic solvents, such as alcohols (e.g., methanol or ethanol) and ethers (e.g., tetrahydrofuran or diethylether).