4571-24-8

Basic information

• Product Name: 1,4-Dibromo-2,5-dichlorobenzene
• Synonyms: 1,4-Dibromo-2,5-dichlorobenzene;Benzene,1,4-dibromo-2,5-dichloro-;1,4-Dibromo-2,5-dichlorobenzen
• CAS NO: 4571-24-8
• Molecular Formula: C₆H₂Br₂Cl₂
• Molecular Weight: 304.79408
• Mol File: 4571-24-8.mol
• Article Data: 5

Chemical Properties

• Melting Point: 148-150 °C
• Boiling Point: 292.9°C at 760 mmHg
• Flash Point: 141.9°C
• Appearance: /
• Density: 2.091g/cm³
• Vapor Pressure: 0.00312mmHg at 25°C
• Refractive Index: 1.623
• Storage Temp.: 2-8°C
• CAS DataBase Reference: 1,4-Dibromo-2,5-dichlorobenzene(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-Dibromo-2,5-dichlorobenzene(4571-24-8)
• EPA Substance Registry System: 1,4-Dibromo-2,5-dichlorobenzene(4571-24-8)

Safety Data

• Hazardous Substances Data: 4571-24-8(Hazardous Substances Data)

Usage

General Description

1,4-Dibromo-2,5-dichlorobenzene is a chemical compound with the molecular formula C6H2Br2Cl2. It is a solid, white crystalline substance with a strong, pungent odor. 1,4-Dibromo-2,5-dichlorobenzene is used as a pesticide and insecticide, as well as in the production of dyes and pigments. It is also used in the manufacturing of disinfectants and deodorizers. Exposure to 1,4-Dibromo-2,5-dichlorobenzene can cause irritation to the skin, eyes, and respiratory tract. It is considered to be a potential environmental hazard due to its toxicity and persistence in the environment.

InChI:InChI=1/C6H2Br2Cl2/c7-3-1-5(9)4(8)2-6(3)10/h1-2H

Upstream product

• 106-46-7 para-dichlorobenzene 
• 106-95-6 allyl bromide 
• 626-43-7 3,5-Dichloroaniline 
• 71-43-2 benzene 
• 89244-49-5 C₆Br₂Cl₂Li₂ 
• 7726-95-6 bromine 
• 7697-37-2 nitric acid 
• 7664-93-9 sulfuric acid 
• 31604-30-5 1,2,4,5-tetrabromo-3,6-dichlorobenzene 
• 95-82-9 2,5 dichloroaniline 

Downstream Products

• 491612-78-3 C₄₆H₃₀ 
• 1048656-94-5 C₂₂H₁₂Cl₂S₄ 
• 1048656-93-4 C₁₄H₈Cl₂S₂ 

Relevant articles and documents

A method for the synthesis of 2, 5 - dichlorophenol (by machine translation)

The invention relates to a 2, 5?Dichiorophenol synthetic method, which belongs to the technical field of the synthesis of the key intermediate chamber. The invention is composed of a pure chlorization generated 1, 2, 4?Trichlorobenzene and santochlor is easy to separate, thereby avoiding the difficulties caused by the separating of the high production cost and low production efficiency; because the 1, 2, 4?Trichlorobenzene and to two chiorophenoxy can be obtained respectively 2, 5?Dichiorophenol, utilization rate of raw materials is high, thereby avoiding the waste of the by-product, so that the production cost is greatly reduced. In addition, the two paradichlorbenzene through two different method to obtain 2, 5?Dichiorophenol. The synthesis technique of this invention is simple, the production cost is low, the utilization rate of raw materials is high, and the craft there are few by-products, less generation of three wastes, is more suitable for large-scale industrial production. (by machine translation)

Aromatic allylation via diazotization: Metal-free C-C bond formation

A new method for the synthesis of allyl aromatic compounds not involving any metal-containing reagent or catalyst has been developed. Arylamines substituted with a large number of different substituents were converted via diazotizative deamination with tert-butyl nitrite in allyl bromide and acetonitrile to the corresponding allyl aromatic compounds. The allylation reaction was found to be suitable for larger scale synthesis due to short reaction times, a nonextractive workup, and robustness toward moisture, air, and type of solvent.

Alkyl Nitrite-Metal Halide Deamination Reactions. 7. Synthetic Coupling of Electrophilic Bromination with Substitutive Deamination for Selective Synthesis of Multiply Brominated Aromatic Compounds from Arylamines

Aromatic amines undergo substitution with copper(II)bromide that is in competition with substitutive deamination when these reactions are performed with tert-butyl nitrite.Except for the exceptionally reactive 4-substituted 1-aminonaphthalenes,which undergo selective bromine substitution at the 1- and 2-positions in relatively high isolated yields,rates for oxidative bromination and substitutive deamination are not sufficiently different that selective multiple bromination can be achieved.Oxidative bromination of N,N-dimethylaniline by copper(II)bromide occurs with partial dealkylation,and nitration products are observed from reactions performed with copper(II)bromide and tert-butyl nitrite.Implications of these results for the successful utilization of copper(II)bromide/tert-butyl nitrite combinations in substitutive deamination reactions of aromatic amines are discussed.Multiply brominated aromatic compounds are produced from aromatic amines in high yield through treatment of the aromatic amine with the combination of molecular bromine and catalytic quantities of copper(II)bromide and,following a normally brief time delay,with tert-butyl nitrite.All unsubstituted aromatic ring positions ortho and para to the amino group,as well as the position of the amino group,are substituted by bromine.The only observed byproducts from use of this procedure (usually 2percent yield) are the partially brominated benzene derivatives.