28084-48-2

Basic information

• Product Name: 4-Hydroxyphenyl 4-hydroxybenzoate
• Synonyms: 4-Hydroxyphenyl 4-hydroxybenzoate;Benzoic acid, 4-hydroxy-, 4-hydroxyphenyl ester;OQBPCYUKFSJTDU-UHFFFAOYSA-N
• CAS NO: 28084-48-2
• Molecular Formula: C₁₃H₁₀O₄
• Molecular Weight: 230.22
• Product Categories: API intermediates
• Mol File: 28084-48-2.mol
• Article Data: 11

Chemical Properties

• Melting Point: 245-247 °C
• Boiling Point: 457.8 °C at 760 mmHg
• Flash Point: 181.6 °C
• Appearance: /
• Density: 1.356 g/cm³
• Vapor Pressure: 5.31E-09mmHg at 25°C
• Refractive Index: 1.646
• PKA: 8.08±0.15(Predicted)
• CAS DataBase Reference: 4-Hydroxyphenyl 4-hydroxybenzoate(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Hydroxyphenyl 4-hydroxybenzoate(28084-48-2)
• EPA Substance Registry System: 4-Hydroxyphenyl 4-hydroxybenzoate(28084-48-2)

Safety Data

• Hazardous Substances Data: 28084-48-2(Hazardous Substances Data)

Usage

General Description

4-Hydroxyphenyl 4-hydroxybenzoate, also known as p-hydroxyphenyl p-hydroxybenzoate, is a chemical compound belonging to the class of phenylbenzoates. It is commonly used as a UV filter in sunscreen and cosmetic products due to its ability to absorb and block harmful UV radiation. 4-Hydroxyphenyl 4-hydroxybenzoate exhibits strong antioxidant properties, which makes it effective in protecting the skin from the damaging effects of free radicals and UV-induced oxidative stress. Additionally, 4-Hydroxyphenyl 4-hydroxybenzoate has been studied for its potential as an anticancer agent and for its ability to modulate inflammatory responses in the skin. Overall, this chemical serves an important role in the formulation of sunscreens and skincare products for its photoprotective and skin-soothing properties.

InChI:InChI=1/C13H10O4/c14-10-3-1-9(2-4-10)13(16)17-12-7-5-11(15)6-8-12/h1-8,14-15H

Upstream product

• 123-31-9 hydroquinone 
• 99-96-7 4-hydroxy-benzoic acid 
• 104-15-4 toluene-4-sulfonic acid 
• 103-16-2 4-Benzyloxyphenol 
• 1486-51-7 p-(benzyloxy)benzoic acid 
• 897599-10-9 4-benzyloxyphenyl 4-benzyloxybenzoate 

Downstream Products

• 138550-28-4 4-trimethylsilanyloxy-benzoic acid 4-trimethylsilanyloxy-phenyl ester 
• 187586-35-2 4-(4-Acryloyloxybutoxy)phenol 4-(4-Acryloyloxybutoxy)benzoate 
• 1007319-12-1 C₂₅H₃₀O₆ 

Relevant articles and documents

Liquid crystal elastomer actuator with serpentine locomotion

A snake-mimic soft actuator composed of a bilayered liquid crystal elastomer ribbon and two serrated feet is reported in this work. Under repeated on/off near-infrared light irradiation, this actuator can move forward relying on a reversible shape morphin

Epoxy compound, composition, material for semiconductor package, molded product, electrical and electronic device, and semiconductor package

Epoxy compounds, compositions, materials for semiconductor packages, molded products, electrical and electronic devices, and semiconductor packages are provided. The epoxy compound is represented by the following Chemical Formula 1 and has at least one mesogenic naphthalene unit. In Chemical Formula 1, at least one of M1, M2, or M3, which is a mesogenic unit, is a naphthalene unit. M1, M2, M3, L1, L2, and E1 and E2 are as defined in the detailed description. The chemical formula (1) is E1-M1-L1-M2-L2-M3-E2.

Mesomorphism and shape-memory behavior of main-chain liquid-crystalline co-elastomers: Modulation by the chemical composition

The mesomorphic behavior, shape shifting, and shape-memory types of two homologous series of main-chain liquid-crystalline co-elastomers (MC-LCEs) with composition-tunable transition temperatures and mesophases structures are reported. The weakly cross-linked macromolecules were prepared in a one-step procedure by the versatile platinum-catalyzed hydrosilylation reaction between siloxane oligomers (linear spacers and netlike point molecules) and liquid-crystalline binary mixtures, composed of defined proportions of divinylic monomeric mesogens. First, the two sets of alternated, linear copolymers with disiloxane or trisiloxane chain extender, respectively, were investigated. They either exhibit both smectic C (SmC) and nematic (N) phases or a single SmC phase, the nature of which being dictated by the length of the inserted siloxane moieties, and the temperatures ranges regulated by the composition of the mesogenic mixture (mesogens ratio). As anticipated, the thermal behavior of the corresponding co-elastomers is not greatly affected by the weak reticulation (less than 5% w/w), whose transition temperatures (from the ambient to ca. 100 °C) and mesophases types (SmC and N) are quasi-replicated from the polymers and still majority governed by the intermingling of the constitutive components (mesogens ratios, siloxane, and comonomers). Moreover, these MC-LCEs exhibit two types of shape-memory behaviors, which are imposed selectively by the nature of the siloxane extender and which are understood in relation to the mesophases' structures. The combination of small-angle X-ray scattering and thermoelastic experiments gives some fundamental insights into the relationships between molecular structures and macroscopic elastic properties in MC-LCEs in general, which should be beneficial for future designs of soft materials with desired shape-memory properties.