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4-Nitrobiphenyl is an organic compound with the formula C 6 H 5 −C 6 H 4 NO 2. It is one of three isomers of nitrobiphenyl and probably the most widely used. It is a precursor to the antioxidant 4-aminobiphenyl. 4-Nitrobiphenyl is readily prepared by nitration of biphenyl. [1] It can also be prepared by cross-coupling reactions. [2]
Purple of Cassius – formed by precipitating a mixture of gold, stannous and stannic chlorides, with alkali. Used for glass coloring; Realgar – arsenic disulfide, an ore of arsenic. Regulus of antimony; Resin of copper – copper(I) chloride (cuprous chloride), formed by heating copper with corrosive sublimate.
The term "calcium ammonium nitrate" is applied to multiple different, but closely related formulations. One variety of calcium ammonium nitrate is made by adding powdered limestone to ammonium nitrate; [1] [2] another, fully water-soluble version, is a mixture of calcium nitrate and ammonium nitrate, which crystallizes as a hydrated double salt: [3] 5Ca(NO 3) 2 •NH 4 NO 3 •10H 2 O.
A typical problem would be to make an intimate mixture of 75% chalk and 25% clay, and burn this to produce an ”artificial cement". The development of the "wet" method of producing fine-grained clay in the ceramics industry afforded a means of doing this.
A restored gesso panel representing St. Martin of Tours, from St. Michael and All Angels Church, Lyndhurst, Hampshire. Gesso (Italian pronunciation:; 'chalk', from the Latin: gypsum, from Greek: γύψος), also known as "glue gesso" or "Italian gesso", [1] is a white paint mixture used to coat rigid surfaces such as wooden painting panels or masonite as a permanent absorbent primer substrate ...
Ben Affleck, Jennifer Garner and Jennifer Lopez showed their support for their children at a recent play.. On Friday night, Dec. 13, Affleck, 52, and Garner, also 52, attended the performance ...
With the addition of a grit such as boron carbide (in a modified formulation given as 70% KClO 3, 19% red phosphorus, 3% sulfur, 3% chalk, and 5% boron carbide by weight), Armstrong's mixture has been considered for use in firearm primers. [5] This use as primer for artillery propellants may have been Armstrong's original purpose. [6]
The bodies of a California mother of three and her 19-year-old son were found dead by her daughter days before the family was set to celebrate Christmas.