1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE
Synonym(s):1,9-Diphenyl-1,3,6,8-nonatetraen-5-one
- CAS NO.：622-21-9
- Empirical Formula: C21H18O
- Molecular Weight: 286.37
- MDL number: MFCD00004792
- EINECS: 210-724-0
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE?
Chemical properties
yellow powder
The Uses of 1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE
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.
Properties of 1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE
| 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 for 1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 1,9-DIPHENYL-1,3,6,8-NONATETRAEN-5-ONE
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