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Reagent Chemicals [a] is a publication of the American Chemical Society (ACS) Committee on Analytical Reagents, [1] detailing standards of purity for over four hundred of the most widely used chemicals in laboratory analyses and chemical research. Chemicals that meet this standard may be sold as "ACS Reagent Grade" materials.
In 2012, Azoty Tarnów became the target of a hostile take-over bid by the Russian Acron Group. [24] [25] On 16 May, the Russian company attempted to take control of the Polish chemical company through its subsidiary Norica Holding S.à r.l. [26] [27] They announced a tender of PLN 36 per share for Zakłady Azotowe in Tarnów-Mościce.
ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS. [3] [4] It is suitable for food and laboratory uses. Reagent grade is almost as stringent as the ACS grade.
Wacker Chemie AG is a German multinational chemical company which was founded in 1914 by Alexander Wacker. The company is controlled by the Wacker family holding more than 50 percent of the shares. The corporation operates more than 25 production sites in Europe, Asia, and the Americas.
The development and supply of reference materials and methods, in particular for chemical analysis and materials testing Assisting in the development of standards and technical regulations for the evaluation of substances, materials, structures, and processes with reference to damage prediction and preservation of national economic values.
The American Institute of Chemical Engineers (AIChE) is a professional organization for chemical engineers. [1] AIChE was established in 1908 to distinguish chemical engineers as professionals independent of chemists and mechanical engineers. Currently, AIChE has over 60,000 members from over 110 countries [2] or 40,000 members from 93 countries.
Like most azobenzenes, Solvent Yellow 7 can be synthesized by the reaction of the phenyldiazonium salt with phenol.The optimal pH value for this azo coupling is 8.5-10. The reaction is carried out in water, since sodium chloride (or potassium chloride) formed in the reaction is soluble in water, while the product precipitates.