Formic acid

Formic acid (E 236, methanoic acid) hada monocarboxylic acid (cikakken) ne da fari. Karkashin al'ada yanayi, abu ne mai colorless ruwa. A sunadarai dabara na formic acid HCOOH.

Bugu da kari ga ta acid halaye, shi ya nuna da inganci da aldehydes. Wannan shi ne saboda da tsarin da E236 abu.

The halitta abin da ke faruwa abu samu a nettles, needles, 'ya'yan itãcen marmari, caustic da kuma kudan zuma secretions da kuma tururuwa. Formic acid da aka fara gano da kuma bayyana a cikin 17th karni. Yana gare ta sunan wani abu, domin shi da aka samu a cikin tururuwa.

Yawanci, da bangaren da aka yi amfani da matsayin hana aifuwa na maza da antibacterial wakili a cikin fodder. Chemical Properties na formic acid slows da lalata da kuma putrefaction. Wannan shi ne dalilin da ya sa silage da kuma hay bi da tare da wannan abu, nace daina. The abu ne kuma a yi amfani da magani. A rini ulu (mordant) kamar yadda Bleach ga fata tanning, a cikin iko da parasites a apiculture a matsayin sauran ƙarfi a lokacin da wasu daga cikin halayen da kuma ya shafi formic acid.

A sunadarai Properties daga cikin abu ne da aka nuna a matsayin aiki na taro. A daidai da EU rarrabuwa, da gwada yawa abun da ke ciki na har zuwa 10% onovozdeystvuet annoyingly, fiye da 10% - lalatattu zuwa.

100% formic acid (ruwa) a lamba tare da fata tsokani sosai tsanani konewa. Samun ko da wani karamin adadin shi a cikin irin wannan taro a kan murfin sa ciwo mai tsanani. The shafa yankin farko ya fara kunna fari kamar yadda idan rufe da sanyi to, ya zama kama da kakin zuma. Around da kone yankin da aka kafa ta a ja kan iyaka. Acid iya sauri shiga cikin cutaneous mai Layer, don haka wajibi ne ga nan da nan nuna wanka da shafa yankin.

Mayar da hankali biyu daga abubuwa iya haddasa lalacewar da numfashi fili da idanu. Bazata bugawa da ciki, ko da a diluted form, methane acid sa mai tsanani gastroenteritis necrotic yanayi.

The jiki da sauri sabobin tuba da kuma nuna abu. Duk da haka, tare da wannan, E236, da formaldehyde, wanda aka kafa a wata guba da methanol, tsokane raunuka a cikin na gani jijiya, manyan zuwa makanta.

muravtinoy acid salts ne formates sunan. Dumama tare da mayar da hankali sulfuric acid take kaiwa zuwa E236 degradable a H2O da CO cewa an yi amfani da su samar da carbon monoxide.

Industrially shirye formic acid daga sodium hydroxide da carbon monoxide.

Tafasar batu abu 100,7, misãlin - 8,25 digiri.

A dakin yanayi E236 decomposes zuwa carbon monoxide da ruwa. A cewar gwaji bayyanannu, da karfin methane ya wuce acetic acid. Duk da haka, saboda da ikon hanzari kaskantar farko, shi ne amfani da sauran ƙarfi ne musamman rare.

An yi imani da cewa E236 ne sosai hygroscopic. A lokacin gwaje-gwajen an gano cewa, samar da anhydrous halitta ta yin amfani da dehydrating reagents ba zai yiwu.

Formic acid da inganci lamba tare da m iska.

E236 tsarki fi 99% za a iya shirya daga wani ruwa-ruwa bayani, yin amfani da wani biyu-mataki barasan tare da yin amfani da butyric acid. A farko barasan gusar da girma ruwa. A saura zai dauke da kimanin 77% -th abu. Don amfani da playout 3 - 6 sau da adadin butyric acid a cikin nau'i na wani azeotropic cakuda.

A kan aiwatar da bude wani akwati da E236 dole ne musamman m. Lokacin da adanar formic acid gagarumin matsa lamba za a iya generated kan dogon lokaci a cikin jirgin ruwa.