21528-38-1

Basic information

• Product Name: o-(p-Diethylaminobenzoyl)benzoic acid
• Synonyms: o-(p-Diethylaminobenzoyl)benzoic acid
• CAS NO: 21528-38-1
• Molecular Formula: C₁₈H₁₉NO₃
• Molecular Weight: 297.35
• Mol File: 21528-38-1.mol
• Article Data: 4

Chemical Properties

• Appearance: /
• CAS DataBase Reference: o-(p-Diethylaminobenzoyl)benzoic acid(CAS DataBase Reference)
• NIST Chemistry Reference: o-(p-Diethylaminobenzoyl)benzoic acid(21528-38-1)
• EPA Substance Registry System: o-(p-Diethylaminobenzoyl)benzoic acid(21528-38-1)

Safety Data

• Hazardous Substances Data: 21528-38-1(Hazardous Substances Data)

Upstream product

• 85-44-9 phthalic anhydride 
• 7446-70-0 aluminium trichloride 
• 91-66-7 N,N-diethylaniline 

Downstream Products

• 10350-87-5 3,3-bis-(4-diethylamino-phenyl)-phthalide 
• 52641-39-1 3-(3,4-dihydroxy-phenyl)-3-(4-dimethylamino-phenyl)-phthalide 
• 155846-85-8 3-[2,2-bis(1-n-butyl-2-methylindol-3-yl)ethenyl]-3-(4-diethylaminophenyl)phthalide 

Relevant articles and documents

Phthalide compound and a near infrared absorber and a recording material each comprising the same compound

A phthalide compound of general formula (I) and a near infrared absorber and a recording material each utilizing the phthalide compound are disclosed. STR1 wherein ring A represents a substituent group of the following formula STR2 where the other substituents are as defined in the disclosure. The near infrared absorber and the recorded image on the recording material absorb strongly the near infrared region with no appreciable absorption in the visible region of the spectrum. The near infrared absorber is colorless or pale in color and yet highly capable of absorbing near infrared radiation. The recorded image on the recording material can hardly be read with the eye but can be read with the OCR. Moreover, the effect on the developed shade of any concomitant color former in a recording material is minimal.

Vinyl phthalide color formers

A chromogenic compound of normally colorless form is disclosed having the following structural formula: STR1 wherein A can be STR2 T, Q, X, Y and Z can be, among several others, hydrogen, alkyl, alkoxy, aryl, and heterocyclic, substituted and unsubstituted; and E can be a broad family of aromatic and heterocyclic structures. The compound is eligible for use in pressure-sensitive record materials and manifold marking systems. Because of light absorption characteristics, selected compounds of this invention are especially useful where machine readability and machine copiability are important.