33905-62-3

Basic information

• Product Name: 4-Hydroxyphenyl 4-butoxybenzoate
• Synonyms: 4-Hydroxyphenyl 4-butoxybenzoate;YIWBRSAYFRNTMR-UHFFFAOYSA-N
• CAS NO: 33905-62-3
• Molecular Formula: C₁₇H₁₈O₄
• Molecular Weight: 286.32
• Product Categories: API intermediates
• Mol File: 33905-62-3.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 456.5°C at 760 mmHg
• Flash Point: 166.2°C
• Appearance: /
• Density: 1.169g/cm³
• Vapor Pressure: 5.96E-09mmHg at 25°C
• Refractive Index: 1.57
• CAS DataBase Reference: 4-Hydroxyphenyl 4-butoxybenzoate(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Hydroxyphenyl 4-butoxybenzoate(33905-62-3)
• EPA Substance Registry System: 4-Hydroxyphenyl 4-butoxybenzoate(33905-62-3)

Safety Data

• Hazardous Substances Data: 33905-62-3(Hazardous Substances Data)

Usage

General Description

4-Hydroxyphenyl 4-butoxybenzoate, also known as oxybenzone, is a chemical compound commonly used in sunscreens and other personal care products. It functions as a UV filter, absorbing and dissipating harmful UVA and UVB rays from the sun to protect the skin from damage and sunburn. However, there has been some controversy surrounding the safety of oxybenzone, as it has been shown to potentially disrupt hormone levels and have harmful effects on marine life when washed off into the water. As a result, some countries and regions have banned or restricted the use of oxybenzone in sunscreen formulations. Nonetheless, it remains a widely used ingredient in sunscreen products and continues to be researched for its potential health and environmental impacts.

InChI:InChI=1/C17H18O4/c1-2-3-12-20-15-8-4-13(5-9-15)17(19)21-16-10-6-14(18)7-11-16/h4-11,18H,2-3,12H2,1H3

Upstream product

• 103-16-2 4-Benzyloxyphenol 
• 4906-25-6 methyl 4-butyloxybenzoate 
• 33863-86-4 4-(n-butyloxy)benzoyl chloride 
• 99-76-3 methyl 4-hydroxylbenzoate 
• 1498-96-0 4-butoxybenzoic acid 
• 148731-03-7 4-Butoxy-benzoic acid 4-benzyloxy-phenyl ester 

Downstream Products

• 184421-52-1 [2,2']Bipyridinyl-5,5'-dicarboxylic acid bis-[4-(4-butoxy-benzoyloxy)-phenyl] ester 
• 1459717-65-7 4-{[(4-butoxyphenyl)carbonyl]oxy}phenyl thiophene-2-carboxylate 
• 1459717-70-4 4-{[(4-butoxyphenyl)carbonyl]oxy}phenyl thiophene-3-carboxylate 
• 100201-92-1 5-Butyl-pyridine-2-carboxylic acid 4-(4-butoxy-benzoyloxy)-phenyl ester 
• 117979-02-9 (2R,5R)-5-Hexyl-[1,3]oxathiane-2-carboxylic acid 4-(4-butoxy-benzoyloxy)-phenyl ester 
• 131340-10-8 4-Butoxy-benzoic acid 4-[4-(5-cyano-5-nonyl-[1,3]dioxan-2-yl)-cyclohexanecarbonyloxy]-phenyl ester 

Relevant articles and documents

Multifunctional supramolecular dendrimers with an s-triazine ring as the central core: Liquid crystalline, fluorescence and photoconductive properties

Novel liquid crystal (LC) dendrimers have been synthesised by hydrogen bonding between an s-triazine as the central core and three peripheral dendrons derived from bis(hydroxymethyl)propionic acid. Symmetric acid dendrons bearing achiral promesogenic units have been synthesised to obtain 3:1 complexes with triazine that exhibit LC properties. Asymmetric dendrons that combine the achiral promesogenic unit and an active moiety derived from coumarin or pyrene structures have been synthesised in order to obtain dendrimers with photophysical and electrochemical properties. The formation of the complexes was confirmed by IR and NMR spectroscopy data. The liquid crystalline properties were investigated by differential scanning calorimetry, polarising optical microscopy and X-ray diffractometry. All complexes displayed mesogenic properties, which were smectic in the case of symmetric dendrons and their complexes and nematic in the case of asymmetric dendrons and their dendrimers. A supramolecular model for the lamellar mesophase, based mainly on X-ray diffraction studies, is proposed. The electrochemical behaviour of dendritic complexes was investigated by cyclic voltammetry. The UV/Vis absorption and emission properties of the compounds and the photoconductive properties of the dendrons and dendrimers were also investigated.

The synthesis and mesomorphism of di-, tetra- and hexa-catenar liquid crystals based on 2,2′-bipyridine

2,2′-Bipyridines are known to coordinate to a wide variety of metal centres. In this paper, liquid-crystalline two-chained (dicatenar), four-chained (tetracatenar) and six-chained (hexacatenar) bipyridines are synthesised and their mesomorphism is described. For the tetracatenar bipyridines, a full homologous series, from tetramethoxy to tetratetradecyloxy, was synthesised, and the phase diagram showed a classic progression from nematic and smectic C phases at short chain length, through a cubic phase to a columnar phase.