55-01-6

Basic information

• Product Name: 3,4,4',5'-tetrachloro-2,2'-methylenebisphenol
• CAS NO: 55-01-6
• Molecular Weight: 338.017
• Mol File: 55-01-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3,4,4',5'-tetrachloro-2,2'-methylenebisphenol(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4,4',5'-tetrachloro-2,2'-methylenebisphenol(55-01-6)
• EPA Substance Registry System: 3,4,4',5'-tetrachloro-2,2'-methylenebisphenol(55-01-6)

Safety Data

• Hazardous Substances Data: 55-01-6(Hazardous Substances Data)

Upstream product

• 50-00-0 formaldehyd 
• 95-77-2 3,4-dichlorophenol 

Relevant articles and documents

The synthesis, separation, and crystal and molecular structures of the three bisphenols, an ethanol solvate of one of them, and of a minor by-product, 6,6',7,7'-tetrachloro-8,8'-methylenebis(4H-benzo-1,3-dioxin), prepared by condensation of formaldehyde with 3,4-dichlorophenol

Samples of all the three of the expected bisphenols, 4,4',5,5'-tetrachloro-2,2'-methylenebisphenol (1) and the 3,4,4',5'- (2) and 3,3',4,4'-tetrachloro (3) isomers, and of a minor by-product, 5,5',6,6'-tetrachloro-8,8'-methylenebis(4H-benzo-1,3-dioxin) (4), have been isolated from the mixture formed by acid-catalyzed condensation of 3,4-dichlorophenol with one half of a molar equivalent of formaldehyde.In addition, the structures and solid state conformations of all four compounds, and of an ethanol solvate of 1, have been revealed by X-ray crystallographic studies.The three bisphenol (1, 2, 3) all crystallize in space group P1. as centrosymmetric hydrogen-bonded dimers, while the solvate, 1*EtOH, although it also belongs to space group P1, forms relatively open infinite bands of hydrogen-bonded molecules.Crystals of 4 belong to space group Fdd2 and the molecules have twofold crystallographic symmetry. Key words: X-ray crystallography, bisphenols, tetrachloro-2,2'-methylenebisphenols, tetrachloro-8,8'-methylenebis(4H-benzo-1,3-dioxin).