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Imidazolidinyl urea is produced by the chemical reaction of allantoin and formaldehyde in the presence of sodium hydroxide solution and heat. The reaction mixture is then neutralized with hydrochloric acid and evaporated: 2 + 3 H 2 C=O → . Commercial imidazolidinyl urea is a mixture of different formaldehyde addition products including ...
Diazolidinyl urea is produced by the chemical reaction of allantoin and formaldehyde in the presence of sodium hydroxide solution and heat. The reaction mixture is then neutralized with hydrochloric acid and evaporated: + 4 H 2 C=O →
An aqueous solution of formaldehyde can be useful as a disinfectant as it kills most bacteria and fungi (including their spores). It is used as an additive in vaccine manufacturing to inactivate toxins and pathogens. [52] Formaldehyde releasers are used as biocides in personal care products such as cosmetics.
In the Tishchenko reaction, the base used is an alkoxide rather than hydroxide, and the product is an ester rather than the separate alcohol and carboxylate groups. After the nucleophilic base attacks an aldehyde, the resulting new oxygen anion attacks another aldehyde to give a hemiacetal linkage between two of the formerly aldehyde-containing ...
In 1986, an aluminium road tanker in the UK was mistakenly used to transport 25% sodium hydroxide solution, [25] causing pressurization of the contents and damage to tankers. The pressurization is due to the hydrogen gas which is produced in the reaction between sodium hydroxide and aluminium: 2 Al + 2 NaOH + 6 H 2 O → 2 Na[Al(OH) 4] + 3 H 2
In the laboratory, sodium formate can be prepared by neutralizing formic acid with sodium carbonate. It can also be obtained by reacting chloroform with an alcoholic solution of sodium hydroxide. CHCl 3 + 4 NaOH → HCOONa + 3 NaCl + 2 H 2 O. or by reacting sodium hydroxide with chloral hydrate. C 2 HCl 3 (OH) 2 + NaOH → CHCl 3 + HCOONa + H 2 O
The reaction is named after Carl Mannich. [2] [3] Scheme 1 – Ammonia or an amine reacts with formaldehyde and an alpha acidic proton of a carbonyl compound to a beta amino carbonyl compound. The Mannich reaction starts with the nucleophilic addition of an amine to a carbonyl group followed by dehydration to the Schiff base.
The reaction is catalyzed by potent acids such as 85-100% sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, or trifluoroacetic acid. [2] N-hydroxymethylamides may be prepared by the condensation of corresponding amides with an aqueous formaldehyde solution in dioxane, in the presence of sodium hydroxide. [3]