2-BROMOISOBUTYRYL BROMIDE

PRODUCT IDENTIFICATION
CAS NO 20769-85-1

2-BROMOISOBUTYRYL BROMIDE

EINECS NO. 244-017-3
FORMULA (CH3)2CBrCOBr
MOL WT. 229.90

H.S. CODE
TOXICITY
SYNONYMS 2-Bromo-2-methylpropionyl bromide;
alpha-Bromoisobutyryl bromide; 2-Bromo-2-methylpropanoyl bromide;

SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Clear to yellow liquid
MELTING POINT
BOILING POINT

162 - 163 C

SPECIFIC GRAVITY 1.40 - 1.41
SOLUBILITY IN WATER Decomposes
pH  
VAPOR DENSITY  

NFPA RATINGS

 Health: 3; Flammability: 1; Reactivity: 0

AUTOIGNITION

 

REFREACTIVE INDEX

 

FLASH POINT 103 C
STABILITY Stable under ordinary conditions.

APPLICATIONS
2-Bromoisobutyryl Bromide is used as an intermediate for the synthesis of pharmaceuticals, agrochemicals, dyes and other organic chemicals.
SALES SPECIFICATION

APPEARANCE

 Clear to yellow liquid
ASSAY

98.0% min

TRANSPORTATION
PACKING 50kgs, 240kgs in drum
HAZARD CLASS 8 (Packing Group: II)
UN NO. 3265
OTHER INFORMATION
Hazard Symbols: C, Risk Phrases: 14-34-37, Safety Phrases: 26-36/37/39-45

GENERAL DESCRIPTION OF ACYL HALIDES
Acyl is a radical formed from an organic acid by removal of a hydroxyl group. The general formula of acyl compound is RCO-. Acyl halide is one of a large group of organic substances containing the halocarbonyl group, have the general formula RCO·X, where X is a halogen atom (fluorine, chlorine, bromine, iodine, and astatine) and R may be aliphatic, alicyclic, aromatic, and H etc. In substitutive chemical nomenclature, their names are formed by adding '-oyl' as a suffix to the name of the parent compound; ethanoyl chloride, CH3COCl, is an example. The terms acyl and aroyl halides refer to aliphatic or aromatic derivatives, respectively. Acyl halides are made by replacing the -OH group in carboxylic acids by halogen using halogenating agents. They react readily with water, alcohols, and amines and are widely used in organic synthetic process whereby the acyl group is incorporated into the target molecules by substitution of addition-elimination sequence called acylation reaction.  Acylation reaction involves substitution by an electron donor (nucleophile) at the electrophilic carbonyl group (C=O). Common nucleophiles in the acylation reaction are aliphatic and aromatic alcohols, both of which give rise to esters and amines (RNH2) which give amides. The carboxylic acid (X = OH) itself can function as an acylating agent when it is protonated by a strong acid catalyst as in the direct esterification of an alcohol. Two common acylation agents, with the general formula RCOX, are acid halides (X = halogen atom) and anhydrides (X = OCOR). Schotten-Baumann reaction is an acylation reaction that uses an acid chloride in the presence of dilute alkali to acylate the hydroxyl and amino group of organic compounds. There are also other acylating agents. Benzoyl Chloride belongs to acyl halides. Acyl halides are involved in acetylation process which introduce an acetyl group (CH3CO-) into compounds. Benzoyl Chloride decomposes violently by heating or on exposure to moist air or water. It reacts violently with strong oxidants, metals (especially iron), alkali and earth alkali metals, bases and wide range of organic substances such as amines, dimethyl sulfoxide and alcohols. The reactions cause fire and explosion hazard. It is used to introduce benzenecarbonyl groups into compounds. Typical reactions undergone by benzoyl chloride are the Schotten-Baumman reaction (the benzoylation of compounds containing a hydrogen), and the Friedel-Crafts reactions (preparation of substituted benzophenones). It is used in manufacturing peroxides such as a benzoyl peroxide and t-butyl perbenzoate. It is also used in the synthesis of benzophenone and its derivatives used in manufacturing pesticides, pharmaceuticals, perfume fixative, polymerization catalyst, benzolating agents, and dyestuffs.