The chalcogens are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. Group 16 consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive elements polonium (Po) and livermorium (Lv). Often, oxygen is treated separately from the other chalcogens, sometimes even excluded from the scope of the term "chalcogen" altogether, due to its very different chemical behavior from sulfur, selenium, tellurium, and polonium. The word "chalcogen" is derived from a combination of the Greek word khalkόs (χαλκός) principally meaning copper, and the Latinized Greek word genēs, meaning born or produced.
Imperial Chemical Industries (ICI) was a British chemical company. It was, for much of its history, the largest manufacturer in Britain. It was formed by the merger of four leading British chemical companies in 1926. Its headquarters were at Millbank in London. ICI was a constituent of the FT 30 and later the FTSE 100 indices.
Phosphorus is a chemical element with the symbol P and atomic number 15. Elemental phosphorus exists in two major forms, white phosphorus and red phosphorus, but because it is highly reactive, phosphorus is never found as a free element on Earth. It has a concentration in the Earth's crust of about one gram per kilogram. In minerals, phosphorus generally occurs as phosphate.
The chemical industry comprises the companies that develop and produce industrial, specialty and other chemicals. Central to the modern world economy, it converts raw materials into industrial and consumer products. The plastics industry contains some overlap, as some chemical companies produce plastics as well as chemicals.
A pnictogen is any of the chemical elements in group 15 of the periodic table. Group (V) is also known as the nitrogen group or nitrogen family. Group (V) consists of the elements nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).
A period 3 element is one of the chemical elements in the third row of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the elements as their atomic number increases: a new row is begun when the periodic table skips a row and a chemical behaviour begins to repeat, meaning that elements with similar behaviour fall into the same vertical columns. The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine and argon. The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block. All of the period 3 elements occur in nature and have at least one stable isotope.
The Dow Chemical Company, officially Dow Inc., is an American multinational corporation headquartered in Midland, Michigan, United States. The company is among the three largest chemical producers in the world.
VG is a "V-series" nerve agent chemically similar to the better-known VX nerve agent. Tetram is the common Russian name for the substance. Amiton was the trade name for the substance when it was marketed as an insecticide by ICI in the mid-1950s.
Vapi, is a city and municipality in Valsad district in the state of Gujarat, India. It is situated near the banks of the Daman Ganga River, around 28 km south of the district headquarters in the city of Valsad, and it is surrounded by the Union Territory of Dadra and Nagar Haveli and Daman and Diu. It is believed that the city got its name from the old small stepwell situated near the Balitha area. The meaning of vapi (वापी) in sanskrit is a water reservoir or a water storage body.
Phosphorus trichloride is an inorganic compound with the chemical formula PCl3. A colorless liquid when pure, it is an important industrial chemical, being used for the manufacture of phosphites and other organophosphorus compounds. It is toxic and reacts readily with water to release hydrogen chloride.
The company formerly known as the United States Rubber Company, now Uniroyal, is an American manufacturer of tires and other synthetic rubber-related products, as well as variety of items for military use, such as ammunition, explosives, chemical weapons and operations and maintenance activities (O&MA) at the government-owned contractor-operated facilities. It was founded in Naugatuck, Connecticut, in 1892. It was one of the original 12 stocks in the Dow Jones Industrial Average, and became Uniroyal, Inc., as part of creating a unified brand for its products and subsidiaries in 1961.
Phosphoryl chloride is a colourless liquid with the formula POCl3. It hydrolyses in moist air releasing phosphoric acid and fumes of hydrogen chloride. It is manufactured industrially on a large scale from phosphorus trichloride and oxygen or phosphorus pentoxide. It is mainly used to make phosphate esters such as tricresyl phosphate.
Lake Apopka is the fourth largest lake in the U.S. state of Florida. It is located 15 miles (24 km) northwest of Orlando, mostly within the bounds of Orange County, although the western part is in Lake County. Fed by a natural spring, rainfall and stormwater runoff, water from Lake Apopka flows through the Apopka-Beauclair Canal and into Lakes Beauclair and Dora. From Lake Dora, water flows into Lake Eustis, then into Lake Griffin and then northward into the Ocklawaha River, which flows into the St. Johns River.
FMC Corporation is an American chemical manufacturing company headquartered in Philadelphia, Pennsylvania, which originated as an insecticide producer in 1883 and later diversified into other industries. In 1941 at the beginning of US involvement in WWII, the company received a contract to design and build amphibious tracked landing vehicles for the United States Department of War, and afterwards the company continued to diversify its products. FMC employs 7,000 people worldwide, and had gross revenues of US$4.7 billion in 2018.
Many countries have standardized the labeling of fertilizers to indicate their contents of major nutrients. The most common labeling convention, the NPK or N-P-K label, shows the amounts of the chemical elements nitrogen, phosphorus, and potassium.
Mesotrione is the ISO common name for an organic compound that is used as a selective herbicide, especially in maize. A synthetic inspired by the natural substance leptospermone, it inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD) and is sold under brand names including Callisto and Tenacity. It was first marketed by Syngenta in 2001.
Henrik Johannes Krebs, sometimes called Henry J. Krebs, was an American immigrant from Denmark who started the Krebs Pigments and Chemical Company to manufacture the pigment lithopone.
China National Chemical Corporation, commonly known as ChemChina, is a Chinese state-owned chemical company in the product segments of agrochemicals, rubber products, chemical materials and specialty chemicals, industrial equipment, and petrochemical processing for the civilian and military sectors. As of 2020, it is ranked 164th among the Fortune Global 500 companies.
Hooker Chemical Company was an American firm producing chloralkali products from 1903 to 1968. In 1922, bought the S. Wander & Sons Company to sell lye and chlorinated lime. The company became notorious in 1977, when residents near its chemical waste site, Love Canal, reported extraordinarily high incidences of leukemia, birth defects, and other injuries. Although Hooker had sold its old chemical waste dump site to the Niagara Falls School Board in 1953, the company was held responsible as a result of a lawsuit thereafter.
Khimprom Novocheboksarsk is a chemicals-producing company based in Novocheboksarsk, Russia. It is part of Orgsintez Group (Renova).
