Coventry Chemicals through its associated company William Pearson led the world development of Black disinfectants.
Black disinfectants are based on phenolic chemistry. Phenols have been used as disinfectants and antiseptics following work originally done by Joseph Lister with carbolic acid derived from coal tar in 1865. Around 1880, William Pearson developed a mixture of creosote dissolved in soap calling it Creolina. The William Pearson Company is still in the Coventry Chemicals group of companies.
Black disinfectants with their characteristic phenolic smell have proved popular for general disinfection in hospitals, homes, hotels and restaurants, farms and veterinary sites. They are also popular for use in kennels, stables and pig housing. Black disinfectants give good control of gram positive and gram negative bacteria in drains, toilets, floors and public places.
Phenolic black disinfectants remained popular until 2011 when the European Chemicals Agency (ECHA) assessed phenols under the European Community REACH regulations. Phenols failed to gain a European license due to human health concerns.
Although phenolic products are licensed for use in many parts of the world, manufacture of these products is forbidden in Europe.
In 2012, Coventry Chemicals introduced synthetic formulations of black disinfectants. They share the same smell, colour and efficacy of the original black disinfectants but contain no phenols.
They are available in RTU, 1+1 and 1 + 3 concentrations.