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Acetyl chloride was first prepared in 1852 by French chemist Charles Gerhardt by treating potassium acetate with phosphoryl chloride. [4]Acetyl chloride is produced in the laboratory by the reaction of acetic acid with chlorodehydrating agents such as phosphorus trichloride (PCl 3), phosphorus pentachloride (PCl 5), sulfuryl chloride (SO 2 Cl 2), phosgene, or thionyl chloride (SOCl 2).
The major use of chloroacetyl chloride is as an intermediate in the production of herbicides in the chloroacetanilide family including metolachlor, acetochlor, alachlor and butachlor; an estimated 100 million pounds are used annually. Some chloroacetyl chloride is also used to produce phenacyl chloride, another chemical intermediate, also used ...
Acyl chloride. In organic chemistry, an acyl chloride (or acid chloride) is an organic compound with the functional group −C (=O)Cl. Their formula is usually written R−COCl, where R is a side chain. They are reactive derivatives of carboxylic acids ( R−C (=O)OH ). A specific example of an acyl chloride is acetyl chloride, CH3COCl.
The chemical formula shows a section of cellulose with two acetyl groups per glucose module. In biochemistry, cellulose acetate refers to any acetate ester of cellulose, usually cellulose diacetate. It was first prepared in 1865. [ 1][verification needed] A bioplastic, cellulose acetate is used as a film base in photography, as a component in ...
Concrete is mostly damaged by the corrosion of reinforcement bars due to the carbonatation of hardened cement paste or chloride attack under wet conditions. Chemical damage is caused by the formation of expansive products produced by chemical reactions (from carbonatation, chlorides, sulfates and distillate water), by aggressive chemical ...
Combustibility and flammability. A combustible material is a material that can burn (i.e., sustain a flame) in air under certain conditions. A material is flammable if it ignites easily at ambient temperatures. In other words, a combustible material ignites with some effort and a flammable material catches fire immediately on exposure to flame.
Flammability diagrams show the control of flammability in mixtures of fuel, oxygen and an inert gas, typically nitrogen. Mixtures of the three gasses are usually depicted in a triangular diagram, known as a ternary plot. Such diagrams are available in the speciality literature. [ 1][ 2][ 3] The same information can be depicted in a normal ...
In organic chemistry, acetyl is a functional group with the chemical formula −COCH3 and the structure −C (=O)−CH3. It is sometimes represented by the symbol Ac[ 5][ 6] (not to be confused with the element actinium ). In IUPAC nomenclature, acetyl is called ethanoyl . The acetyl group contains a methyl group ( −CH3) single-bonded to a ...
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