Acetaldehyde. ngā āhuatanga ōkiko me te waiariki. Takanga ko Whakamahi

Acetaldehyde (ingoa atu: metilformaldegid acetaldehyde, hāparo-) - ko te pūhui organic no ki te piha o aldehydes. faufaa no te tangata, kua kitea tenei taonga te mea i roto i te kawhe, te taro, hua maoa me huawhenua. Synthesized e tipu. puta te reira i fakanatula me te hua i roto i te nui tangata rahinga. Acetaldehyde tātai: CH3-Cho.

ngā āhuatanga ōkiko

1. Acetaldehyde - he wai te huitahi he kakara kino koi.
2. Ko te reira i ohie wairewa i roto i Etere, waipiro, me te wai.
3. Ko te papatipu titiwha o 44,05 karamu / kamiriona.
4. Ko te kiato ko te 0.7 g / santimetr³.

āhuatanga waiariki

1. Ko te ira whakakoero ko -123 nekehanga.
2. Ko te wāhi e koropupu ko 20 nekehanga.
3. Ko te pāmahana pātīmata he rite ki te -39 nekehanga.
4. Ko te pāmahana pātīmata ko 185 nekehanga.

acetaldehyde takanga

1. Ko te tukanga taketake mo te faaineineraa o tenei taonga i roto i te piti hāora o te ethylene (tukanga Wacker pera-ka karanga). rite tenei tauhohenga titiro reira:
2CH2 = C2H4 (ethylene) + O2 (hāora) = 2CH3CHO (metilformaldegid)

2. ano, e taea te hua acetaldehyde i te hydration o te acetylene i te aroaro o tai mēkuri (pera-ka karanga tauhohenga Kucherova). homai tenei he phenol ka te nei isomerized ki te hāparo-tahi.

Ko rongonui 3. te tikanga e whai ake nei i mua i te taeraa mai o te tukanga i runga ake. Mahi ana e te piti hāora dehydrogenation ranei o te waihā i runga i te hiriwa parahi ranei whakakōkī.

acetaldehyde Taupānga

- Me acetaldehyde hoki e matū? waikawa ahetiki, butadiene, waerau hāparo-tahi, me etahi atu matū organic.
- whakamahia rite te kawainga (he taonga e whai wāhi i roto i te tauhohe ārahi ki te hanga o te taonga ūnga) ki te waikawa ahetiki. Heoi, mai e whakaaro tatou ki te tono i te taonga hohoro mutu. tupu tenei mo te take i te mea ohie, me iti ki te hua i METALON e tukanga Kativa ko Monsanto te waikawameha ahetiki.
- Metilformaldegid - he kawainga nui ki te pentaerythritol, pärönaki pyridine me krotonaldegidu.
- takanga o nga resins tika ki te meka e te tiomimi me acetaldehyde whai te kaha ki te whakawhāiti.
- Te faaineineraa o te ethylidene diacetate i nei muri hua waetahi polyvinyl (vinyl tāpia).

fakafalala Tupeka me acetaldehyde

Tenei taonga - he wahi nui o te paowa tupeka. I tū tata whakaaturanga, te wahi i whakakitea ai e faarahi i te hononga synergistic o waikawameha ahetiki ki nikotīni te faaiteraa o te ti'aturiraa (ngā i roto i te tangata i raro i toru tekau tau).

a Alzheimer mate me te acetaldehyde

Ko te hunga iwi kahore e nei i te faafariuraa metilformaldegida tauwehe ira ki waikawameha ahetiki, i te mōrearea nui o predisposition ki taua mate rite dementia taipāpā (ranei te mate o Alzheimer), e te tikanga puta i roto i te tau tawhito.

Waipiro me te metilformaldegid

Hai e whakaaro tatou te taonga he carcinogenic ki te tangata, kia rite ki o te tenei ra, i reira he taunakitanga o te acetaldehyde carcinogenic i roto i ngā ngā kararehe. I tua atu, metilformaldegid pakaru DNA, reira meinga he whanaketanga taimaha tinana taikaha o te pūnaha uaua, hono nei te ki te ofatiraa o te pūmua pākia i roto i te tinana. he ako o 800 Alcoholics i puritia, i roto i nei kairangahau faaoti e kitea iwi ki acetaldehyde, i reira he he koha i roto i te ira mō te kotahi paru - dehydrogenase waipiro. Hoki tenei take, e taua tūroro i mōrearea nui o te whakawhanake mate pukupuku o te whatukuhu, me te wahi o runga o te ate.

haumaru

Ko te taonga, ko te paitini. Ko reira he paranga o te kōhauhau i roto i paowa exhausts ranei i roto i jams waka.