1218-89-9

Basic information

• Product Name: 4,4'-DIMETHYLBENZOIN
• Synonyms: 4,4'-DIMETHYLBENZOIN;Dimethylbenzoin;4,4'-Dimethylbenzoin 98%;4,4''-DIMETHYLBENZOIN 98+%;Toluoin;1,2-Bis(4-methylphenyl)-2-hydroxyethanone;2-Hydroxy-1,2-bis(4-methylphenyl)ethanone;p-Toluoin
• CAS NO: 1218-89-9
• Molecular Formula: C₁₆H₁₆O₂
• Molecular Weight: 240.3
• Product Categories: Benzhydrols, Benzyl & Special Alcohols;Phenyls & Phenyl-Het;Phenyls & Phenyl-Het
• Mol File: 1218-89-9.mol
• Article Data: 69

Chemical Properties

• Melting Point: 88°C
• Boiling Point: 210 °C / 1mmHg
• Flash Point: 170.5°C
• Appearance: /
• Density: 1.13g/cm³
• PKA: 12.16±0.20(Predicted)
• CAS DataBase Reference: 4,4'-DIMETHYLBENZOIN(CAS DataBase Reference)
• NIST Chemistry Reference: 4,4'-DIMETHYLBENZOIN(1218-89-9)
• EPA Substance Registry System: 4,4'-DIMETHYLBENZOIN(1218-89-9)

Safety Data

• Statements: 36/37/38
• Safety Statements: 26-36/37/39
• Hazardous Substances Data: 1218-89-9(Hazardous Substances Data)

Usage

General Description

4,4'-Dimethylbenzoin is a chemical compound that belongs to the family of benzoin compounds, which are widely used as photoinitiators in photopolymerization processes. It consists of two benzene rings with two methyl groups attached at the 4th position of each ring. 4,4'-DIMETHYLBENZOIN is a white to pale yellow crystalline powder and is sparingly soluble in water but soluble in organic solvents. 4,4'-Dimethylbenzoin is used as a photoinitiator in the production of adhesives, coatings, and inks, and it helps to initiate the polymerization reaction when exposed to UV light. Its low volatility and high reactivity make it a valuable component in the production of various polymer materials. Additionally, it is also used in the synthesis of other chemical compounds.

Upstream product

• 2728-05-4 N,N-Diethyl-p-toluamid 
• 60-29-7 diethyl ether 
• 104-87-0 4-methyl-benzaldehyde 
• 71-43-2 benzene 
• 3457-48-5 1,2-di(4-methylphenyl)-1,2-ethanedione 
• 589-18-4 4-Methylbenzyl alcohol 
• 5173-28-4 (1R,2S)-1,2-Di-p-tolyl-ethane-1,2-diol 
• 78-94-4 methyl vinyl ketone 
• 111098-80-7 bis(benzotriazolo)(4-methylphenyl)methane 
• 187875-25-8 1-methyl-2-(α-hydroxy-4-methylbenzyl)benzimidazole 
• 292638-85-8 acrylic acid methyl ester 
• 611-97-2 bis(p-methylphenyl)-methanone 
• 68-12-2 N,N-dimethyl-formamide 
• 111508-19-1 C₃₁H₃₂N₆OSi 

Downstream Products

• 116238-58-5 4,5-bis-(4-methylphenyl)-1H-imidazole 
• 38305-61-2 2,5-diphenyl-3,4-di(p-tolyl)cyclopenta-2,4-dien-1-one 
• 51490-06-3 1,2-di-p-tolyl-ethanone 
• 3457-48-5 1,2-di(4-methylphenyl)-1,2-ethanedione 
• 57297-30-0 2-bromo-1,2-bis(4-methylphenyl)ethanone 
• 71193-33-4 monothio-4,4'-dimethyldibenzoyl 
• 654673-43-5 (α-methylamino-4-methylbenzyl)-(4-methylphenyl)-ketone 
• 16107-87-2 6-methyl-2,3-di-p-tolylquinoxaline 
• 3719-84-4 2,3-bis(4-methylphenyl)quinoxaline 
• 1293372-38-9 4,5-bis-(4-methylphenyl)-5H-[1,2,3]oxathiazole 2,2-dioxide 
• 1293372-51-6 (4S,5R)-4,5-bis-(4-methylphenyl)-[1,2,3]oxathiazolidine 2,2-dioxide 
• 203587-50-2 2-phenylethyl 4-methylbenzoate 
• 1391014-02-0 2-(trimethylsilyl)ethyl 4-methylbenzoate 
• 2653-46-5 allyl 4-methylbenzoate 

Relevant articles and documents

Efficient and mild benzoin condensation reaction catalyzed by simple 1-N-alkyl-3-methylimidazolium salts

The benzoin reaction, catalyzed by simple 1-N-alkyl-3-methylimidazolium salt-based ionic liquid via carbene intermediate, to give the α-hydroxyl ketone proceeds in CH2Cl2 under mild conditions.

A new protocol for one-pot synthesis of tetrasubstituted pyrroles using tungstate sulfuric acid as a reusable solid catalyst

A variety of tetrasubstituted pyrroles were synthesized in good yields in a one-pot, three-component reaction of α-hydroxyketones, malononitrile, and ammonium acetate using tungstate sulfuric acid (TSA) under solvent-free conditions.

N-PEGylated Thiazolium Salt: A Green and Reusable Homogenous Organocatalyst for the Synthesis of Benzoins and Acyloins

N-PEGylated-thiazolium salt is used as efficient catalyst for the benzoin condensation. The catalyst was synthesized by reaction of activated polyethylene glycol 10,000 (PEG-10000) with 4-methyl-5-thiazoleethanol (sulfurol). Reaction mixture undergoes temperature-assisted phase transition and catalyst separated by simple filtration. After reaction course, catalyst can be recycled and reused without any apparent loss of activity which makes this process cost effective and hence ecofriendly. Synthesized benzoins and acyloins by this method have been characterized on the basis of melting point and 1H-NMR spectral studies. Graphic Abstract: [Figure not available: see fulltext.]

1-butyl-3-methylimidazolium bromide as a solvent and precatalyst for stetter reaction

Stetter reaction between aromatic aldehydes and acrylonitrile/ethyl acrylate performing in [Bmim]Br in the presence of NaOH is described. N-Heterocyclic carbene (NHC) generates in situ is shown to be an efficient catalyst. Benzoin condensation also occured as side reaction.