Abstract: A method is described for producing n-propyl bromide of a high degree of purity, which contains isopropyl bromide in an amount lower than 0.1% w/w, and usually lower than 0.05%. The method is characterized in that n-propanol is reacted with HBr which is in gas form, preferably dry, and which is in excess over the stoichiometric amount, wherein the excess HBr is at the end of the reaction in an aqueous solution formed from the reaction water. The invention further relates to N-propyl bromide of high purity, containing typically less than 500 ppm of isopropyl bromide.

Abstract: A method is described for producing n-propyl bromide of a high degree of purity, which contains isopropyl bromide in an amount lower than 0.1% w/w, and usually lower than 0.05%. The method is characterized in that n-propanol is reacted with HBr which is in gas form, preferably dry, and which is in excess over the stoichiometric amount, wherein the excess HBr is at the end of the reaction in an aqueous solution formed from the reaction water. The invention further relates to N-propyl bromide of high purity, containing typically less than 500 ppm of isopropyl bromide.

Abstract: A process for the preparation of Decabromodiphenyl ether is disclosed, which employs dibromomethane as the reaction medium, at temperatures not exceeding 80.degree. C.The product obtained by the process of the invention possesses improved thermal stability.

Abstract: A process for the preparation of decabromodiphenyl ether by the reaction of diphenyl ether or of a partially brominated derivative thereof, in a mixture of halogenated organic solvents is described.The process of the invention provides a product having improved thermal stability. The process can be carried out in a quasi-steady state manner, thereby producing a product with constant quality.