Sodium formate
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BeschreibungSodium formate, HCOONa, is the sodium salt of formic acid, HCOOH. It usually appears as a white deliquescent powder.
VerwendenSodium formate is used in several fabric dyeing and printing processes. It is also used as a buffering agent for strong mineral acids to increase their pH, and as a food additive ( E237 ) .
synthetischeSodium formate can be prepared in the laboratory by neutralizing formic acid with sodium carbonate. It can also be obtained by reacting chloroform with an alcoholic solution of sodium hydroxide. CHCl3 + 4NaOH → HCOONa + 3NaCl + 2H2O or by reacting sodium hydroxide with chloral hydrate. C2HCl3(OH)2 + NaOH → CHCl3 + HCOONa + H2O The latter method is, in general, preferred to the former because the low aqueous solubility of CHCl3 makes it easier to separate out from the sodium formate solution, by fractional crystallization, than the soluble NaCl would be. For commercial use, sodium formate is produced by absorbing carbon monoxide under pressure in solid sodium hydroxide at 160 °C. CO + NaOH → HCOONa Sodium formate may also be created via the haloform reaction between ethanol and sodium hypochlorite in the presence of a base.
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DefinitionChEBI: An organic sodium salt which is the monosodium salt of formic acid.