Organic materials are composed of a mixture of carbohydrates, lignins, tannins, fats, oils, waxes, resins, proteins, minerals, and other assorted compounds. With the exception of the mineral fraction, the organic compounds are composed of varying...

An organic compound is a compound containing carbon in combination with one or more elements. Organic compounds are generally characterized by chains of connected carbon atoms. Hydrocarbons contain only carbon and hydrogen, while many other organic...

In organic chemistry, a cyclic compound is one whose molecules consist of three or more atoms joined in a closed ring. A polycyclic compound is one whose molecules contain two or more rings joined to each other. Environmentally, the most important...

These are compounds which contain carbon. It was first thought that organic compounds could only be produced by plants or animals. The great number of organic compounds results from the valence of four of the carbon atom. Carbon atoms can link together...

An organic compound is any member of a large class of chemical compounds whose molecules contain carbon. For historical reasons discussed below, a few types of compounds such as carbonates, carbon oxides and cyanides, as well as elemental carbon are...

WHAT IS MELAMINE?Melamine is an organic compound, which is 67 percent nitrogen, but also contains hydrogen and carbon, said John Groves, professor of chemistry at Princeton University. It can be produced in a lab, but it is also produced when some pesticides break down, according...

Sinclair Oil Corp., has agreed to pay $2.45 million in civil penalties and reduce emissions from three of its refineries in Wyoming and Oklahoma as part of a clean air settlement with the government, the Justice Department announced Tuesday.Under the agreement, filed in U.S. District...

A robotic dirt and ice digger rocketed toward Mars on Saturday, beginning a 422 million-mile journey that NASA hopes will culminate next spring in the first ever landing within the red planet's Arctic Circle.The Phoenix Mars Lander blasted off before dawn, precisely on time, hurtling...

The Environmental Protection Agency, following a congressional mandate, finalized plans Tuesday for new standards to boost the use of renewable fuels such as ethanol and biodiesel.Refiners will be required to use at least 7.5 billion gallons of renewable fuel in gasoline by 2012, the EPA...

An overview of four organic compounds: carbohydrates, lipids, proteins, and nucleic acids.