89115-86-6

Basic information

• Product Name: 2-(2-ISOPROPYLBENZOYL)BENZOIC ACID
• Synonyms: 2-(2-ISOPROPYLBENZOYL)BENZOIC ACID
• CAS NO: 89115-86-6
• Molecular Formula: C₁₇H₁₆O₃
• Molecular Weight: 268.31
• Mol File: 89115-86-6.mol

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 2-(2-ISOPROPYLBENZOYL)BENZOIC ACID(CAS DataBase Reference)
• NIST Chemistry Reference: 2-(2-ISOPROPYLBENZOYL)BENZOIC ACID(89115-86-6)
• EPA Substance Registry System: 2-(2-ISOPROPYLBENZOYL)BENZOIC ACID(89115-86-6)

Safety Data

• Hazardous Substances Data: 89115-86-6(Hazardous Substances Data)

Usage

Chemical Class

Aromatic carboxylic acids

Derivative

Benzoic acid derivative

Structure

Contains two benzene rings (one with an isopropyl group and the other with a benzoic acid group)

Usage

Sunscreen agent and UV absorber in cosmetic and personal care products

Function

Protects skin from harmful UV rays

Mechanism

Absorbs and reflects UV radiation

Additional Use

Stabilizer in industrial products (plastics, adhesives)

Upstream product

• 85-44-9 phthalic anhydride 
• 19099-54-8 2-isopropyliodobenzene 
• 63488-08-4 (2-isopropylphenyl)magnesium bromide 

Relevant articles and documents

Photoenolization as a means to release alcohols

We have designed molecules which release alcohols upon exposure to UV light independent of the reaction media, making it possible to liberate alcohols in a controlled manner in applications. Photolysis of 2-(2-isopropylbenzoyl)benzoate ester derivatives 4 in various solvents and in thin films results in the liberation of the alcohol moiety from the ester. The reaction mechanism for the release of the alcohol has been elucidated by time-resolved laser flash photolysis. Upon irradiation the triplet excited state of ketone, 4 is formed, and its lifetime can be estimated to be between 0.08 and 0.8 ns. The triplet excited state decays by efficient intramolecular H-atom abstraction to form a 1,4-biradical, 8, that has a lifetime of less than 17 ns and is trapped by molecular oxygen. In the absence of oxygen, biradical 8 intersystem crosses to form photoenols (Z)-9 and (E)-10 in a ratio of 5:2, respectively. Photoenol (Z)-9 has a lifetime of ～3000 ns in protic solvents and returns to the starting material through 1,5 intramolecular hydrogen transfer. The other isomer, (E)-10, is much longer lived (>1 ms) and releases the alcohol moiety through an intramolecular lactonization.

Photoinduced Reactions. Part 147. Photochemistry of 1-Isopropylanthrone

The triplet state of 1-isopropylanthrone (8) was found to be very short-lived (45+/-25 ps) in view of its effect on the triplet-sensitized isomerization of cis-piperylene.This result agrees with our previous conclusion that the triplet lifetime of 2,4,6-tri-isopropylbenzophenone (1) is controlled by hindered rotation in the excited state.Measurement of absorption and emission spectra for (8) has revealed that the keto-enol equilibrium for (8) is overwhelmingly on the side of the keto-form even in ethanol.