Charles Tennant(1768-1838), Manufacturing chemist
Sitter in 5 portraits
Tenant was initially apprenticed to a handloom weaver in Kilbarchan in Scotland. The bleaching of cloth was an important aspect of the weaving industry; after studying bleaching methods Tennant took out a patent in 1799 to manufacture bleaching powder by passing chlorine over slaked lime. He subsequently moved to St Rollox, near Glasgow, where with his partners he established a factory to produce the powder commercially. Soda ash and other alkali products were also made, and St Rollox eventually grew into one of Europe's largest chemical works.
by William Walker
Become a Member
Enjoy access to special events, discounts on the Gallery online shop, supporters’ updates and much more
Bringing people together by sharing the portraits and stories of the men and women who have shaped our nation.
Sign up to recieve information on exhibitions, collections and activities of the National Portrait Gallery, including special offers, shop products, and exclusive competitions.