Waikawa pōwaro. ngā āhuatanga ōkiko me te matū. Te whakamahi, te haumaru i te mahi.

waikawa pōwaro (ingoa atu - waikawa metiluksusnaya, E280 rokiroki, waikawa propionic) - ko reira he wai ki waihā kahore tae malodorous. He te tātai matū e whai ake nei: C2H5-COOH.

ngā āhuatanga ōkiko o te waikawa propionic:

1. te rewanga pāmahana ko -21 °.

2. Ko te wāhi e koropupu ko 141 °.

3. Ko te wāhi flash ko 54 °.

4. Ko te papatipu titiwha rite ki te 74,08 karamu / kamiriona.

5. I raro i ngā āhuatanga paerewa, ko te wai taekore.

6. Ko te pāmahana pātīmata ko 440 °.

āhuatanga matū o te waikawa propionic:

1. tairewa ki te wai (H2O) me whakarewa organic.

2. He waikawa pōwaro - he māngai angamaheni o te waikawa kukū. Kia hanga hākawa galogenagidridy, amides, me ētahi atu matū.

History o whakahura propanoate

I whakaahuatia tuatahi tenei taonga i roto i te tau 1844 e Johann Gottlieb, e kitea ia i roto i te waenganui o ngā hua huka kinonga. Na, he wa atu Utaina rite tenei waikawa i roto i ara rerekē, i waho ite i te reira i roto i, i tangohia ai i te pūhui kotahi. I roto i te 1847, i kitea e Jean-Baptiste Dumas i te rauemi whiwhi mua te waikawa taua i muri whakaahuatia e ia pehea waikawa pōwaro, ai tātai - C2H5-COOH.

He aha e nga tikanga o te whiwhi propanoate?

I roto i te natura kitea waikawa pōwaro i roto i te hinu.

I roto i te ahumahi, te taonga hua i roto i Reppe carbonylation o ethylene ki te tauhohe rite te byproduct i te piti hāora o waiwaro, hāora catalytic o te pōwaro hāparo-tahi i roto i te aroaro o katote konupora konukurahina ranei.

Hoki, ka taea te whiwhi he maha nui o te waikawa metiluksusnoy mā te whakaputa i te waikawa winika, engari tikanga hou o te whiwhi mahi reira tenei ara ki te puna tuarua o te waikawa propionic.

Ka taea te rite tenei rawa i roto i te whāwehe pūkoro o waikawa amino me waikawa ngakongako e roto i te tuhene o ngota waro.

hua hoki pōwaro huakita waikawa o te puninga Propionibacterium (te hua mutunga o to ratou pākia). E kitea ana ēnei huakita i roto i te pūnaha kūnatu o ruminants, a no te mea o ratou mahi i roto i te tīhi Swiss he ona ake hā ahurei.

waikawa Propionic

hākawa reira me tai.

He pai te wairewa i roto i te wai (H2O) kawakore me kawakore-whenua tai, e kore e tareka i roto i ngā whakarewa organic.

Hākawa o tenei taonga painga wairewa i roto i (H2O) te wai, engari tairewa ki whakarewa organic.

tono

whakamahia tēnei waikawa i roto i te wā e whai ake nei:

- production gerbetsidy (hei tauira dihlorprol, waihā pōwaro), taero (fenobolin, ibuprofen), rauemi kakara etahi (linaloil-, phenyl-, geranil-, benzyl propionate) whakarewa (butyl-, pentyl-, propyl propionate), kirihou ( polivinilpropionat), surfactants (ethers glycol) me vinilplastifikatorov;

- mai i inhibits te waikawa propionic te tupu o etahi huakita me te pokepokea ai, e nui o reira whakamahia te rite te rokiroki i roto i te kai mo e rua tangata, me te kararehe. whakamahia te hua kei te tika mō te waikawa propionic kararehe ona ranei te tote (haukinia propionate), me i roto i ngā hua e kua hangaia mo te tangata mā te whakamahi i te konupūmā (konupūmā propionate) ranei te konutai (konutai propionate) ranei te tote ona.

Haumaru i te mahi

Ko te ati matua ka whakamahi i waikawa propionic - he weranga matū o rerekē pakeke.

I roto i te akoranga whakahaere i roto i nga kararehe taiwhanga ko pānga kino anake e pā ana ki te kohi o pota iti waikawa pōwaro wā roa-te ahua o keha i roto i te pū kai, me te puku, meinga e te e āhuatanga ha'iriiri o te taonga. kihai i kitea te reira i roto i te whakamātautau i he mutagenic, carcinogenic, paitini, me te kino mo nga whekau whakaputa uri waikawa propionic. Kia i roto i te tinana, kei te whakaaro matou he taonga oxidizes tere metabolized me te ka outputted i te puka o te hauhā.