Issue+about+formaline...



Formaline is a solution of formaldehyde in water, with levels between 10% -40%. Although formaldehyde displays chemical properties in general aldehydes, these compounds are more reactive than other aldehydes. Formaldehyde is an electrophile, could be used in electrophilic aromatic substitution reaction and aromatic compound and can undergo electrophilic addition reactions and alkene. In the presence of alkaline catalysts, formaldehyde undergoes a Cannizzaro reaction, yielding formic acid and methanol.

Formaldehyde (systematic name: methanal) is an organic compound with the formula CH2O. As the simplest aldehyde, it is an important precursor to many other chemical compounds, especially for polymers. In 2005, annual world production of formaldehyde was estimated to be 23 million tons (50 billion pounds) .In view of its widespread use, toxicity and volatility, exposure to formaldehyde is a significant consideration for human health.
 *  molecular formula : CH2O
 *  molar mass : 30,03 g/mol
 *  pH : 2.8 (31% solution)
 *  melting point : -92 0C (pure), −15 °C (37% solution)
 *  boiling point : -21 °C (p ure), 96 °C (37% solution)
 *  solubility in water : very high
 *  density : 1,38 g/ml

The colour of formalin is colorless. Formalin contain about 37 persent formaldehid in water, methanol is usually added in formaline until 15 percent as preservative. Naturally formaline is in the food materials. Formaldehyde is almost found in some products because it has a unique function as disinfectant. Formalin can damage the skin. If formaldehyde reacted with water causes an ionic bond which not stable, so formaldehyde become paraformaldehid which have a toxic character.



Formalin have a similiar name likes formol, morbicid, methanal, formic aldehyde, methyl oxide, oxymethylene, methyl aldehyde, oxomethane, formoform, formalith, oxomethane, karsan, methylene glycol, paraforin, poly-oxymethylene glycols, superlysoform, tetraoxymethylene dan trioxane.

Formaline compound of aldehydes which can react with proteins,when formaline is used to some food such as //tofu//, formalin will bound protein. And that's why tofu will become more chewy. Protein who bounded of formaline will not react with bacteri so that's why formalin food becomes more durable.

Formaldehyde can be produced from burning materials containing carbon. Contained in the smoke of forest fires, automobile exhaust, and smoke tobacco.