Pigment Violet 29 Pigment Violet 29 Pigment Violet 29 (C.I. 71129) is an organic compound that is used as a pigment and vat dye. Its colour is dark red purple, or bordeaux. Structurally, it is a derivative of perylene, although it is produced from acenaphthene. It is a less common dye compared to related derivatives such as pigment red 190 (Vat Red 29). Violet 29 is used in watercolors, acrylic paints, automotive paints, inks for printing and packaging, cleaning and washing agents, pharmaceuticals, solar cells, paper, sporting goods, industrial carpeting, and food packaging. Violet 29 is under risk evaluation review by the US
What Bird is That? Edition What Bird is That?" was published by Australia's Heritage Publishing in 2011, the latest release of Cayley’s “big bird book” complete with Lindsey’s revisions. It is 832 pages, features 769 birds and includes all 460 of Cayley’s full-colour paintings, many showing groups of related birds. New to this edition was an accompanying e-book "What Bird Call is That?", which identifies and illustrates 101 birds from "What Bird is That?", as well as providing sound files of each featured bird’s distinctive call. The sound files were provided by David Stewart. "What Bird is That?" plays a central role in Australian