Physico-chemical Analysis of Engine Coolants for Sale in Brazzaville

This study focuses on the analysis of coolants in automotive engines for sale in Brazzaville. The parameters; pH, refractive index, densities and spectrum in the ultraviolet were measured. It follows that the colours of the coolants for sale in Brazzaville are random, the refractive indices are comparable to that of water except for one product, 50% of coolants have acidic pH and are known to degrade engines, 85% appear to be stained with paint dyes for sale in hardware stores, or those of the sky and/ or ice cream on sale in the markets. These liquids do not contain ethylene glycol except for one product. And, generally speaking, coolants for sale in Brazzaville are not compliant