Propanoic acid. guryaha jirka iyo kiimikada. Isticmaalka, badbaadada goobta shaqada.

Propanoic acid (magacyo kale - metiluksusnaya acid, E280 preservative, Propionic acid) - waa dareere la dhamayta aan midabka malodorous. Waxay leedahay formula soo socda kiimikada: C2H5-COOH.

guryaha jirka ah ee Propionic acid:

1. heerkulka barafku waa -21 °.

2. dhibic karaya The waa 141 °.

3. dhibic flash waa 54 °.

4. mass The gaws loo siman yahay 74,08 grams / jirjirroolaha.

5. Xaaladaha caadiga ah, waa dareere ah midab.

6. heerkulka alaabeed waa 440 °.

guryaha kiimikada ee Propionic acid:

1. miscible biyo (H2O) iyo qase organic.

2. acid propane A - wakiil caadiga ah acids carboxylic cokan. Waxaa laga yaabaa in ay u sameeyaan esters galogenagidridy, amides, iyo waxyaabaha kale.

History of propanoate daahfurka

walax ugu horreeyey waxaa la tilmaamay in 1844 by Johann Gottlieb, oo ku dhex jira waxyaabaha loo gaysto sonkorta ee isaga ka helay. Markaas, inta lagu guda jiro waqti farmashiye kale acid taas waxaa loo diyaariyey in siyaabo kala duwan, iyada oo aan wax garanayn, waxaa la soo bixiyay xarunta isla. In 1847, Jean-Baptiste Dumas helay in maaddadu ay horay u heli jiray acid isla kaas oo uu markii dambe ku tilmaamay sida ay acid propanoic, kuna waari dhexdeeda formula - C2H5-COOH.

Maxay yihiin hababka loo helo propanoate?

In dabiiciga ah propanoic acid helay saliidda.

In warshadaha, walaxda soo saaray iyada oo carbonylation Reppe of ethylene in falcelinta sida byproduct ah ee lagu qayilo ee Consort, qayilo horseed ee aldehyde propane in joogitaanka udhigo manganese ama Cobalt.

Sidoo kale, tiro badan oo ah metiluksusnoy acid waxaa laga heli karaa by saara acetic acid, laakiin hababka casriga ah ee helitaanka u sameeyeen sidatan in il sare ee Propionic acid.

walax Tan waxaa loo diyaarin karaa in kala daatay ee dheefshiidka ee acids amino acids iyo dufanka leh kuwaas oo ka kooban tiro kisi ah ee atamka carbon.

Sidoo kale soo saari propane bakteeriyada acid of Brobionibakterium panulirus ah (wax soo saarka dhamaadka ay shiid). Bakteeriyada waxaa laga helaa nidaamka dheefshiidka ariga, iyo sababta oo ah hawlaha ay farmaajada Swiss ayaa dhadhan gaar ah u gaar ah.

Propionic acid

Waxaa esters iyo cusbada.

Xumadoodu iyo cawaaqib xumadoodu-dhulka cusbada yihiin iyo sidoo kale L. biyo (H2O), ma baabbi'isaa qase organic.

Esters walax this liidata L. ee (H2O) biyo, laakiin miscible la qase organic.

codsiga

acid waxaa loo isticmaalaa in arrimaha soo socda:

- gerbetsidy wax soo saarka (tus dihlorprol, propanol), daroogada (fenobolin, ibuprofen), qalabka cadar gaar ah (linaloil-, phenyl-, geranil-, propionate benzyl) dareeraha (butyl-, pentyl-, propionate propyl), balaastigga ( polivinilpropionat), surfactants (ethers tones) iyo vinilplastifikatorov;

- tan iyo acid ee Propionic uu hakiyo koritaanka bakteeriyada qaarkood iyo caaryada, in badan oo ka mid ah waxaa loo isticmaalaa sida preservative ah in cunto labada dadka iyo xoolaha. Shayga waxaa si toos ah loo isticmaalo acid Propionic xoolaha ama cusbo (ammonium propionate), iyo in wax soo saarka, kuwaas oo loo soo saaray qofka isticmaalaya calcium (calcium propionate) ama sodium (sodium propionate) ama cusbo ah oo dhanba.

Badbaadada shaqada

khatar ugu weyn ee The marka la isticmaalayo Propionic acid - waa gubasho kiimikada ee darnaanta kala duwan.

Baaritaano laga sameeyay xayawaanka shaybaarka saamayn taban ee la xidhiidha isticmaalka muddada-dheer ee qaadasho yar oo acid propanoic ahaa muuqaalka kore ee boogaha ee hunguriga iyo caloosha, in waxa sababa guryaha xoqe oo ah walaxda. Waxaa la ma laga helay tijaabo ah in Propionic acid waa mutagenic, kansar, sun iyo kuwa xun ee xubnaha taranka. Marka ee jirka, ama aan ku fekereyno walax oxidizes si degdeg ah metabolized oo waxaa markaas outputted qaab carbon dioxide.