Aniline Dyes. A class of synthetic, organic dyes originally obtained from aniline (coal tars),and were the first synthetic dyes. Today the term is used with reference to any synthetic organic dyes and pigments, in contrast to animal or vegetable coloring materials, and synthetic inorganic pigments.
From Wikipedia, the free encyclopedia. Soil organic matter (SOM) is the organic matter component of soil, consisting of plant and animal residues at various stages of decomposition, cells and tissues of soil organisms, and substances synthesized by soil organisms.he concentration of SOM in soils generally ranges from 1% to 6% of the total topsoil mass for most upland soils. Soils whose upper horizons consist of less than 1% organic matter are mostly limited to desert areas, while the SOM content of soils in low-lying, wet areas can be as high as 90%.
A: Organic matter is composed of the remains of animals and plants and the waste products the organisms leave in the environment. Unlike organic material, organic matter has decomposed to the point that it is resistant to decomposition. This matter is decomposed into a humus that has been converted by microorganisms.