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NCCl + CH 3 CN → NCCH 2 CN + HCl. About 20,000,000 kg are produced annually (2007). Important outlets include the synthesis of thiamine, the drug triamterene and minoxidil, and the dyes disperse Yellow 90 and disperse Blue 354. [4] Malononitrile is relatively acidic, with a pK a of 11 in water. [5]
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.
Methyl yellow, or C.I. 11020, is an organic compound with the formula C 6 H 5 N 2 C 6 H 4 N(CH 3) 2. It is an azo dye derived from dimethylaniline. It is a yellow solid. According to X-ray crystallography, the C 14 N 3 core of the molecule is planar. [3] It is used as a dye for plastics and may be used as a pH indicator.
CAS Number. 109-74-0 ... Malononitrile; Pivalonitrile; Succinonitrile; ... C 3 H 7 CH 2 OH + NH 3 + O 2 → C 3 H 7 CN + 3 H 2 O. Occurrence in space
Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
Tetramethylsuccinonitrile or TMSN is an organic compound with the formula (C(CH 3) 2 CN) 2, classified as a dinitrile, and a colorless and odorless solid derived from 2,2'-azobis-isobutyronitrile, a common radical initiator in the manufacture of PVC: [(CH 3) 2 C(CN)] 2 N 2 → [(CH 3) 2 C(CN)] 2 + N 2. [6]
C 2 (CN) 4 + e − → [C 2 (CN) 4] −. Because of its ability to accept an electron, TCNE has been used to prepare numerous charge-transfer salts [5] and magnetic molecular materials. The central C=C distance in TCNE is 135 pm. [6] Upon reduction, this bond elongates to 141–145 pm, depending on the counterion. [7]
There are three structural isomers: 1,2-dihydroxybenzene (the ortho isomer) is commonly known as catechol, 1,3-dihydroxybenzene (the meta isomer) is commonly known as resorcinol, and 1,4-dihydroxybenzene (the para isomer) is commonly known as hydroquinone. [1]