Bromoketone 4 rr benzene 9%

Bromoketone 4 rr benzene 9%

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Chemical compound Bromoketone-4 is produced in laboratory conditions by synthesizing hydrobromic acid and 4-methylpropriophenone. As a result you get a reactive of crystalline structure, which has white or cream colour.

Synonyms: 4-methyl-alpha-bromopropiophenone, BK4, 2-bromo-4-methylpropiophenone, bromo-4-methylpropiophenone, bromketon-4, 2-bromo-4-methylpropiophenone, 2-bromo-4-methylpropiophenone

Substance formula: C10H11BrO

Molar mass: 227,098 г/моль

CAS number: 1451-82-7

Physical and chemical properties

You can only obtain bromoketone 4 as a result of chemical reaction between hydrobromic acid and 4-methylpropriophenone with acetic acid acting as a catalyst. In order to achieve required consistency the reagent is distilled and dried out using magnesium sulphate. Tear gas is released during the chemical reaction. Acquired reagent has a structure of white or light cream small crystals, that can be dissolved in ethanol, benzenes and many ethers. The substance’s melting point is 54.8C, while its boiling temperature is -273C.

Precautionary measures

When working with the chemical, serious precautionary measures are due to the specificity of the synthesis of the compound. During the chemical reactions for the production of Bromoketone 4 a toxic, hazardous tear gas is being released. Be sure to use protective measures for your respiratory system, your eyes, while working with the compound, and also to wear standard coveralls applicable during working with chemical compounds. The reaction must be carried out in a special, well-ventilated room.

Storage conditions

Bromoketone 4 crystalls should be stored in a dry dish, which can be tightly closed. Room temperature should not be above 25°C. The lab should have a special room for storing chemicals, room with excellent ventilation, with the ability to set necessary temperature conditions. Be sure to pay attention to the compound’s colour, if the crystals are of yellowish or dark yellow colour, they are not suitable for use. This means that the chemical has reached its expiry date.


The reactive is mainly used in pharmaceuticals and scientific research. When manufacturing medicine, it acts as an intermediate in the synthesis. In some scientific studies and chemical reactions it is necessary to use a clean and the most qualitative reagent as the presence of impurities is unacceptable. Some chemicals have a «es.c.» label, meaning that this reactive is especially clean.

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