Umahluko phakathi kwe-1,2-propanediol kunye ne-1,3-propanediol kwizithambiso

I-Propylene glycol yinto ohlala uyibona kuluhlu lwezithako zezinto zokuthambisa ezisetyenziswa imihla ngemihla. Ezinye zibhalwe njenge-1,2-propanediol kwaye ezinye zibhalwe njengeI-1,3-propanediol, ngoko ke yintoni umahluko?
I-1,2-Propylene glycol, i-CAS No. 57-55-6, ifomula yemolekyuli C3H8O2, sisithambisi seekhemikhali, esinokuxutywa namanzi, i-ethanol kunye nezinye izinyibilikisi ezininzi ze-organic. Lulwelo oluqinileyo olungenambala olukwimeko eqhelekileyo, phantse alunavumba kwaye lumnandi kancinci xa luvumba kancinci.
Ingasetyenziswa njengesixhobo sokumanzisa kwizinto zokuthambisa, i-toothpaste kunye nesepha kunye ne-glycerin okanye i-sorbitol. Isetyenziswa njengesixhobo sokumanzisa kunye nokulinganisa kwiidayi zeenwele kunye nesixhobo sokuthintela ukukhenkceza.
I-1,3-Propylenei-glycol, i-CAS No. 504-63-2, ifomula yemolekyuli yi-C3H8O2, lulwelo olungenambala, olungenavumba, olunetyuwa, olune-hygroscopic viscous, olunokunyibilikiswa, lufakwe i-ester, luxutywe namanzi, luxutywe kwi-ethanol, i-ether.
Ingasetyenziswa ekuhlanganiseni iintlobo ngeentlobo zamayeza, i-PTT entsha ye-polyester, ii-intermediate ze-pharmaceutical kunye nee-antioxidants ezintsha. Yinto eluhlaza yokuvelisa i-polyester engagcwaliyo, i-plasticizer, i-surfactant, i-emulsifier kunye ne-emulsion breaker.
Zombini zinefomula efanayo yemolekyuli kwaye ziyi-isomers.
I-1,2-Propylene glycol isetyenziswa njenge-arhente yokulwa neentsholongwane okanye njengesixhobo sokukhuthaza ukungena kwezinto zokuthambisa xa zinomlinganiselo ophezulu.
Xa iphantsi kakhulu, isetyenziswa njenge-moisturizer okanye i-cleanser.
Xa kumanqanaba aphantsi, ingasetyenziswa njengesinyibilikisi esisebenzayo kwizithako ezisebenzayo.
Ukucaphuka kwesikhumba kunye nokhuseleko kumanqanaba ahlukeneyo kwahlukile ngokupheleleyo.
I-1,3-Propylene glycol isetyenziswa kakhulu njengesinyibilikisi kwizithambiso. Sisinyibilikisi esifumisayo se-polyol esiphilayo esinceda izithako zezithambiso zingene eluswini.
Inamandla aphezulu okufumisa kune-glycerin, i-1,2-propanediol kunye ne-1,3-butanediol. Ayinamatheli, ayinamvakalelo yokutsha, kwaye ayinazo iingxaki zokurhawuzelelwa.
Iindlela eziphambili zemveliso ze-1,2-propanediol zezi:
1. Indlela yokufunxa i-propylene oxide;
2. Indlela ye-propylene ethe ngqo ye-catalytic oxidation;
3. Indlela yokutshintshiselana nge-Ester; 4. Indlela yokwenziwa kwe-glycerol hydrolysis.
I-1,3-Propylene glycol iveliswa ikakhulu yi:
1. Indlela yamanzi ye-Acrolein;
2. Indlela ye-ethylene oxide;
3. Indlela yokwenziwa kwe-Glycerol hydrolysis;
4. Indlela ye-Microbiological.
I-1,3-Propylene glycol ibiza kakhulu kune-1,2-Propylene glycol.I-1,3-PropyleneI-glycol inzima ngakumbi ukuyenza kwaye inesivuno esiphantsi, ngoko ke ixabiso layo lisaphezulu.
Nangona kunjalo, ulwazi oluthile lubonisa ukuba i-1,3-propanediol ayicaphukisi kakhulu kwaye ayibangeli ntlungu eluswini kune-1,2-propanediol, ide ifikelele kwinqanaba apho kungekho mpendulo ingathandekiyo.
Kungoko ke, kwiminyaka yakutshanje, abanye abavelisi batshintshe i-1,2-propanediol nge-1,3-propanediol kwizithako zokuhombisa ukuze banciphise ukungonwabi okunokwenzeka eluswini.
Ukungonwabi kwesikhumba okubangelwa zizithambiso kusenokungabangelwa yi-1,2-propanediol okanye i-1,3-propanediol yodwa, kodwa kunokubangelwa zizinto ezahlukeneyo. Njengoko ingcinga yabantu ngempilo nokhuseleko lwezithambiso isiya isanda, imfuno enkulu yemarike iya kuqhubeka ikhuthaza abavelisi abaninzi ukuba baphuhlise iimveliso ezingcono ukuhlangabezana neemfuno zabaninzi abathanda ubuhle!