Alizarin

Alizarin or 1,2-dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red) is an organic compound with formula C
14H
8O
4 that has been used throughout history as a prominent red dye, principally for dyeing textile fabrics. Historically it was derived from the roots of plants of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically.

Alizarin is the main ingredient for the manufacture of the madder lake pigments known to painters as Rose madder and Alizarin crimson. Alizarin in the most common usage of the term has a deep red color, but the term is also part of the name for several related non-red dyes, such as Alizarine Cyanine Green and Alizarine Brilliant Blue. A notable use of alizarin in modern times is as a staining agent in biological research because it stains free calcium and certain calcium compounds a red or light purple color. Alizarin continues to be used commercially as a red textile dye, but to a lesser extent than 100 years ago.

Madder Lake (band)

Madder Lake are an Australian progressive rock band formed in Melbourne in 1968 as San Sebastian. They were one of the first bands signed to the Michael Gudinski co-owned Mushroom Records which released their debut single, "Goodbye Lollipop" in February 1973, followed by the album Stillpoint in August. This contained their most recognisable single, "12lb Toothbrush". Their second album Butterfly Farm was released in April 1974, they left Mushroom after their last single, "I Get High" appeared in July 1976. A compilation album The Best of Madder Lake was released by Mushroom Records in 1978.

History

San Sebastian were a part-time rock band formed by Swinburne Institute of Technology (now Swinburne University of Technology, Hawthorn campus) Graphic Design students in 1968, including Kerry McKenna on bass guitar and Brendan Mason on guitar. By 1969 the line-up was McKenna, Mason, Mick Fettes on vocals, Jac Kreemers on drums and John McKinnon on keyboards, they were playing cover versions for the pub circuit. Original material was introduced and, by late 1970, band members were leaving their tertiary studies to fulfil their bookings. With a repertoire of progressive, psychedelic, blues music they changed their name, in early 1971, to Madder Lake—madder lake is a crimson-coloured water-based dye (alizarin) mixed with alum and used in painting.