Arabinogalactan is a water-soluble gum that is found at remarkably high concentrations (up to 35%) in the heartwood of all larch species. Arabinogalactans are also found in minor amounts in many other trees, plants and plant seeds, and in the cell walls of certain bacteria. Although a description of this hydrocolloid first appeared in texts in 1898, arabinogalactan was not produced for the commercial market until 1964. It has numerous exclusive features, such as thorough miscibility with water and low viscosity at a high concentration of dissolved solids. These distinctive characteristics make this polysaccharide beneficial for the carbon black, mining, printing, and food industries, where exciting uses for it are being created.