19072-77-6

Basic information

• Product Name: 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol]
• Synonyms: 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol];2,2'-Methylenebis[4,6-bis(1,1-dimethylethyl)-3-methylphenol];Einecs 242-796-4
• CAS NO: 19072-77-6
• Molecular Formula: C31H48O2
• Molecular Weight: 452.71162
• EINECS: 242-796-4
• Mol File: 19072-77-6.mol
• Article Data: 20

Chemical Properties

• Boiling Point: 493.8°Cat760mmHg
• Flash Point: 189.9°C
• Appearance: /
• Density: 0.973g/cm³
• CAS DataBase Reference: 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol](CAS DataBase Reference)
• NIST Chemistry Reference: 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol](19072-77-6)
• EPA Substance Registry System: 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol](19072-77-6)

Safety Data

• Hazardous Substances Data: 19072-77-6(Hazardous Substances Data)

Usage

General Description

2,2'-methylenebis[4,6-di-tert-butyl-m-cresol] is a chemical compound used as an antioxidant in various industrial applications, including the production of plastics, rubber, and petroleum products. It is a member of the family of phenolic antioxidants and is known for its ability to inhibit the degradation of materials caused by oxidation. 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol] is often used in combination with other antioxidants to provide enhanced protection against degradation of the materials it is applied to. It is also commonly used in the production of food packaging materials to prevent the deterioration of the packaging and its contents. Overall, 2,2'-methylenebis[4,6-di-tert-butyl-m-cresol] is a versatile and effective antioxidant that plays a crucial role in preserving the quality and longevity of various industrial and consumer products.

Upstream product

• 110-86-1 pyridine 
• 74-96-4 ethyl bromide 

Relevant articles and documents

Boosting activity of molecular oxygen by pyridinium-based photocatalysts for metal-free alcohol oxidation

An eco-friendly and economical approach for the photocatalytic oxidation of organic inter-mediates by air under mild conditions is highly desirable in green and sustainable chemistry, where the photogeneration of active oxygen species plays a key role in improving conversion efficiency and selectivity. By using pyridinium derivatives as molecular mediators for electron transfer and energy transfer, the simultaneous activation of O2from air into superoxide radicals and singlet oxygen species can be achieved, and a photoinduced electron transfer catalytic system for the oxidation of alcohols has been developed. Thus, we have successfully simplified the complicated catalytic system into a single molecular catalyst without any additional noble metals and co-catalysts/additives. The current photocatalytic system shows high catalytic efficiency not only for aromatic alcohols but also for aliphatic alcohols that are generally difficult to undergo aerobic oxidation at room temperature under air atmosphere, representing an ideal photocatalytic platform for green and economical organic syntheses.

Targeted Synthesis of Trimeric Organic-Bromoplumbate Hybrids That Display Intrinsic, Highly Stokes-Shifted, Broadband Emission

Zero-dimensional (0D) hybrid organic-inorganic lead halides have been shown to display efficient broadband photoluminescence and are, therefore, of significant interest for artificial lighting applications. However, work that investigates the formability of the materials as a function of templating organic cation structure is rare. This severely limits our ability to rationally design new materials displaying specific structural and photophysical properties. With the goal of accessing rare 0D trimeric bromoplumbates, we have systematically varied templating N-alkylpyridinium cations and examined their impact upon inorganic lattice structure. Whereas comparatively short and flexible N-alkyl substituents (ethyl, 2-hydroxyethyl, and pentyl) yield one-dimensional (1D) inorganic chains, more rigid substituents (benzyl, acetamidyl, and cyanomethyl) afford hybrids composed of lead bromide face-sharing trimers (i.e., [Pb3Br12]6-). Of the rigid substituents studied, benzyl groups were found to enforce the highest level of distortion of the [PbBr6]4- octahedra that comprise their trimeric structures. Upon exposure to ultraviolet (UV) light, N-benzylpyridinium lead bromide (1)6[Pb3Br12] exhibits a broadband emission, centered at 571 nm, which spans from 400 to 800 nm. More specifically, it displays a large Stokes shift of ca. 1.39 eV and a full width at half-maximum of ca. 146 nm. This broadband emission decays with a comparatively long lifetime of 426 ns at room temperature, which increases to 5.8 μs at 77 K. The reduced size and dimensionality of its inorganic lattice also result in a photoluminescence quantum yield (of at least 10%) that is approximately one order of magnitude higher than that of its 1D congeners. Mechanistically, broadband emission in (1)6[Pb3Br12] is believed to originate from triplet excited state(s) obtained from excited-state structural reorganization of the [Pb3Br12]6- moiety.

Bromobismuthates: Cation-induced structural diversity and Hirshfeld surface analysis of cation–anion contacts

Reactions of [BiBr6]3? and bromide salts of various substituted pyridinium cations in excess of HBr result in a series of bromobismuthate anionic complexes of various geometry and nuclearity: [{BiBr4}n]n?, [Bi2Br9]3? and [Bi2Br10]4?. Hirshfeld surface analysis for 19 crystal structure was performed; impact of various X-Br contacts on the crystal structures is discussed.