1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE Chemical Properties

Melting point:

144-145 °C (lit.)

Boiling point:

388.73°C (rough estimate)

Density 

1.0402 (rough estimate)

refractive index 

1.4880 (estimate)

form 

powder to crystal

color 

Light yellow to Yellow to Orange

CAS DataBase Reference

622-21-9(CAS DataBase Reference)

EPA Substance Registry System

1,3,6,8-Nonatetraen-5-one, 1,9-diphenyl- (622-21-9)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

24/25

WGK Germany 

3

TSCA 

Yes

HS Code 

29141990

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE Usage And Synthesis

Chemical Properties

yellow powder

Uses

Dicinnamalacetone was used as an indicator in measuring the surface acidity of homoionic montmorillonites by titrating certain Hammett indicators adsorbed on the clay with n-butylamine. It was also used as an indicator (yellow to bright red) for detection of excess hydrogen halides in many organic solvents (except alcohols).

Purification Methods

Crystallise the ketone from *benzene/isooctane (1:1). The 1,3,5-trinitrobenzene complex (1:1) has m 113o (from EtOH), and the 1,3,5-trinitrobenzene complex (1:2) has m 110o (from EtOH). [Beilstein 7 H 524, 7 I 293, 7 II 484, 7 III 2756, 7 IV 1834.] The 2,4-dinitrophenylhydrazone has m 199-200o.

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