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4-TERT-BUTYL-2-METHYLPHENOL, also known as Butylated hydroxytoluene (BHT), is an organic compound that serves as a versatile antioxidant. It is characterized by its white crystalline solid form, a faint characteristic odor, and its insolubility in water. BHT is widely recognized for its ability to prevent oxidation and deterioration in various products, thereby extending their shelf life and maintaining their quality.

98-27-1

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98-27-1 Usage

Uses

Used in Food Industry:
4-TERT-BUTYL-2-METHYLPHENOL is used as a preservative in the food industry to prevent the oxidation and spoilage of food products. It is added to oils, fats, and snacks to extend their shelf life and maintain their freshness.
Used in Cosmetics Industry:
In the cosmetics industry, 4-TERT-BUTYL-2-METHYLPHENOL is used as an antioxidant to prevent the degradation of cosmetic products, ensuring their stability and effectiveness over time.
Used in Industrial Products:
4-TERT-BUTYL-2-METHYLPHENOL is used as an antioxidant in the production of rubber, plastics, and petroleum products. It helps to prevent the oxidation of these materials, thereby enhancing their durability and performance.
However, it is important to note that there are concerns regarding the potential health effects of 4-TERT-BUTYL-2-METHYLPHENOL. Studies have suggested that it may act as an endocrine disruptor and has been classified as a possible human carcinogen. As a result, its use in certain applications may be subject to regulatory restrictions and ongoing research to ensure safety.

Check Digit Verification of cas no

The CAS Registry Mumber 98-27-1 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 8 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 98-27:
(4*9)+(3*8)+(2*2)+(1*7)=71
71 % 10 = 1
So 98-27-1 is a valid CAS Registry Number.
InChI:InChI=1/C11H16O/c1-8-7-9(11(2,3)4)5-6-10(8)12/h5-7,12H,1-4H3

98-27-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 20, 2017

Revision Date: Aug 20, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-TERT-BUTYL-2-METHYLPHENOL

1.2 Other means of identification

Product number -
Other names 2-methyl-4-tert-butylphenol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:98-27-1 SDS

98-27-1Relevant academic research and scientific papers

Catalytic Activation of Unstrained C(Aryl)-C(Alkyl) Bonds in 2,2′-Methylenediphenols

Dong, Guangbin,Ratchford, Benjamin L.,Xue, Yibin,Zhang, Rui,Zhu, Jun

supporting information, p. 3242 - 3249 (2022/02/23)

Catalytic activation of unstrained and nonpolar C-C bonds remains a largely unmet challenge. Here, we describe our detailed efforts in developing a rhodium-catalyzed hydrogenolysis of unstrained C(aryl)-C(alkyl) bonds in 2,2′-methylenediphenols aided by removable directing groups. Good yields of the monophenol products are obtained with tolerating a wide range of functional groups. In addition, the reaction is scalable, and the catalyst loading can be reduced to as low as 0.5 mol %. Moreover, this method proves to be effective to cleave C(aryl)-C(alkyl) linkages in both models of phenolic resins and commercial novolacs resins. Finally, detailed experimental and computational mechanistic studies show that with C-H activation being a competitive but reversible off-cycle reaction, this transformation goes through a directed C(aryl)-C(alkyl) oxidative addition pathway.

Alkylation of Phenols with tert-Butanol Catalyzed by H-Form of Y Zeolites with a Hierarchical Porous Structure

Bayguzina,Makhiyanova,Khazipova,Khusnutdinov

, p. 1554 - 1559 (2019/10/14)

tert-Butyl-substituted phenols have been synthesized via the reaction of phenol, o-, m-, and p-cresols with tert-butanol under the action of CBr4-promoted Y-zeolites in the H-form with a hierarchical porous structure.

Formal Asymmetric Cycloaddition of Activated α,β-Unsaturated Ketones with α-Diazomethylphosphonate Mediated by a Chiral Silver SPINOL Phosphate Catalyst

Zheng, Bo,Chen, Haohua,Zhu, Lei,Hou, Xiqiang,Wang, Yan,Lan, Yu,Peng, Yungui

supporting information, p. 593 - 597 (2019/01/21)

An efficient method for preparing highly functionalized chiral nonspiro-phosphonylpyrazolines via an asymmetric formal 1,3-dipolar cycloaddition reaction of α-diazomethylphosphonate with activated, acyclic α,β-unsaturated ketones, bearing an additional nitrile electron-withdrawing group, has been developed, utilizing an in situ generated chiral silver phosphate catalyst, affording excellent stereoselectivities (up to 98% ee, 99:1 dr) and yields (up to 95%). A stepwise mechanism is proposed based upon density functional M11 calculations.

MCM-41-supported phosphotungstic acid-catalyzed cleavage of C-O bond in allyl aryl ethers

Sakate, Sachin S.,Kamble, Sumit B.,Chikate, Rajeev C.,Rode, Chandrashekhar V.

, p. 4943 - 4949 (2017/07/12)

Removal of the protecting allyl group from allyl aryl ethers in the presence of other oxygen protecting groups was successfully achieved using a solid acid supported on the high surface area material MCM-41. The catalyst showed excellent activity in the presence of various electron withdrawing, electron donating, and oxidizable functional groups. The methodology is also very useful for the removal of protecting allyl groups of various natural products such as vanillin, isovanillin, and other oxygen functionalized aldehydes and ketones.

Diastereofacial selectivity in reactions of substituted cyclohexyl radicals. An experimental and theoretical study

Damm,Giese,Hartung,Hasskerl,Houk,Hüter,Zipse

, p. 4067 - 4079 (2007/10/02)

The diastereofacial selectivity in reactions of a series of alkyl-substituted cyclohexyl radicals has been investigated. In additions of cyclohexyl radicals to alkenes, it has been found that only substituents bound at the olefinic center being attacked by the radical influence the equatorial-axial selectivity. Substituents bound to the radical center or axial substituents β to the radical center lead to increased axial attack. Equatorial β-substituents or axial γ-substituents increase the amount of equatorial attack. The same trends are observed for halogen and hydrogen abstraction reactions; the amount of axial reaction product is usually somewhat higher than in the addition reactions. The stereoselectivities can be explained with steric and torsional effects very similar to those suggested for nucleophilic addition reactions to cyclohexanones. A MM2 force field has been parameterized to gain further insight into the stereochemistry of the reaction.

EQULIBRATION OF TERT-ALKYLPHENOLS (THERMODYNAMIC ANALYSIS OF THE ALKYLATION OF PHENOLS USING BRANCHED-CHAIN OLEFINS).

Nesterova,Verevkin,Malova,Pil'shchikov

, p. 748 - 754 (2007/10/02)

The authors describe the results of a study to evaluate the thermodynamic properties of t-Alk PHI ; these results; combined with earlier results, have enabled the authors to complete a thermodynamic analysis of the process for preparing tertiary alkylphenols.

Trans-substitution and equilibration of phenols. Part IV. The influence of various catalysts on the trans-tert-butylation reaction of phenols; mechanistic aspects

Willemse, F. R. J.,Kooyman, E. C.,Lamoen, H. B. van,Vos, D. de,Wolters, J.

, p. 206 - 209 (2007/10/02)

The trans-tert-butylation reaction by 2,6-di-tert-butyl-4-methylphenol has been studied for a number of phenols in the presence of different catalysts.Equilibria, as well as reaction kinetics, have been investigated.The mechanism involves the intermediacy of a tert-butyl ether.This mechanism is supported both by the kinetics and the initially high ortho/para ratio as well as by the reversed substituent effect.

Electrophilic Substitution with Rearrangement. Part 10. Some Products of Bromination of 2,4-Dimethylphenol and of 4-t-Butyl-2-methylphenol

Brittain, Judith M.,Mare, Peter B. D. de la,Newman, Paul A.,Chin, Wong See

, p. 1193 - 1198 (2007/10/02)

The reaction of 2,4-dimethylphenol with bromine gives first 6-bromo-2,4-dimethylphenol, which according to the conditions of further bromination can give 4,6-dibromo-2,4-dimethylcyclohexa-2,5-dienone; a mixture of 5,6- with some 3,6-dibromo-2,4-dimethylphenol; 6-bromo-4-bromomethyl-2-methylphenol with none of the 2-bromomethyl-4-methyl isomer; or a mixture from which 6-bromo-2,4-bis(bromomethyl)phenol can be isolated.The corresponding dienone from 6-bromo-4-t-butyl-2-methylphenol reacts by more complex pathways, and the products include those of de-t-butylation.The probable mechanisms involved in these reactions are discussed.

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