Coal tar can be injurious to health. Coal tar is also used to manufacture paints, synthetic dyes (notably tartrazine/Yellow #5), and photographic materials. In the coal gas era, there were many companies in Britain whose business was to distill coal tar to separate the higher-value fractions, such as naphtha, creosote and pitch. A great many industrial chemicals were first isolated from coal tar during this time. These companies included: Side effects of coal tar products include skin irritation, sun sensitivity, allergic reactions, and skin discoloration. It is unclear if use during pregnancy is safe for the baby and use during breastfeeding is
Wright's Coal Tar Soap Herbert Cassin Wright (chairman), Ernest Albert Umney (vice-chairman), Ernest Blakesley Layman, James Knight, James Hamerton, and Reginald Edward Conder. Hampshire Museum has four "Coal Tar Vaporizers" made by Wright, Layman & Umney in the early 20th century, and some bill-heads (invoices) which were sent to one of their customers, Messrs Charles Mumby & Co, lemonade manufacturers of Gosport. In 1949 the company sued a trader who used a similar name. The law at the time relating to trademarks was covered by the Trade Marks Act 1938. Case law shows that a similar name is not always certain to lead to