Dicinnamalacetone

CAS 622-21-9(C6H5CH=CHCH=CH)2COChemical Synthesis

Dicinnamalacetone (CAS: 622-21-9), a diaryl ketone, is a chemical compound with the linear formula (C₆H₅CH=CHCH=CH)₂CO and a molecular weight of 286.37 g/mol. It is primarily recognised for its application as an indicator in specific chemical analyses. Historically, it has been employed in measuring the surface acidity of montmorillonite clays and for detecting excess hydrogen halides in various organic solvents.

IUPAC: 1,9-Diphenyl-1,3,6,8-nonatetraen-5-one
Synonyms: 1,9-Diphenyl-1,3,6,8-nonatetraen-5-one

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Dicinnamalacetone ((C6H5CH=CHCH=CH)2CO) — chemical structure, CAS 622-21-9; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC15 to C38Carbonyl CompoundsChemical SynthesisKetones

01 /Applications

Acid-Base Indicator

Dicinnamalacetone serves as a colour indicator, transitioning from yellow to bright red. It is useful for detecting the presence of excess hydrogen halides in non-alcoholic organic solvents.

Surface Acidity Measurement

This compound was utilised as an indicator in the titration of Hammett indicators adsorbed on homoionic montmorillonites, aiding in the measurement of clay surface acidity.

Organic Synthesis Reagent

As a ketone and a conjugated system, dicinnamalacetone can function as a building block in various organic synthesis pathways.

02 /Properties

Molecular weight	286.37
Linear formula	(C6H5CH=CHCH=CH)2CO
Assay	98%
Application	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-butylamine1. It was also used as an indicator (yellow to bright red) for detection of excess hydrogen halides in many organic solvents (except alcohols).
Melting point	144-145 °C(lit.)

03 /Safety & handling

Protective equipment	Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
Water hazard class (WGK, DE)	3

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

622-21-9

MDL number

MFCD00004792

PubChem substance

24853725

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Dicinnamalacetone used for?

Dicinnamalacetone is used as an indicator for measuring surface acidity of clays and for detecting excess hydrogen halides in organic solvents. It also serves as a building block in chemical synthesis.

What are the CAS number and formula for Dicinnamalacetone?

The CAS number for Dicinnamalacetone is 622-21-9, and its linear formula is (C₆H₅CH=CHCH=CH)₂CO.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Dicinnamalacetone with a minimum purity of 98%. This product is typically intended for laboratory and research use and is not supplied as USP, BP, EP, or pharmacopoeia grade.

How should Dicinnamalacetone be handled safely?

Handling Dicinnamalacetone requires appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The compound has a WGK rating of 3 in Germany, indicating a high hazard level.

How is Dicinnamalacetone packed and shipped?

Dicinnamalacetone is carefully packed according to industry standards to ensure safe transport. Tech Serve Solutions is an experienced global exporter of chemicals.

How can I request a quote or sample for Dicinnamalacetone?

To request a quote or a sample of Dicinnamalacetone, please contact our sales team via the website or by phone. Please specify your requirements and delivery location.