Iimveliso
Dipropylene Glycol
Ifomula yoLwakhiwo
Iipropati Zomzimba
Imbonakalo: ulwelo olungenambala, olungenavumba
Indawo yokunyibilika:-32°C
Iqondo lokubila:90-95°C1mmHg
Ubuninzi:1.023g/mLat25°C(lit.)
Ubuninzi bomphunga:4.6(vsair)
Uxinzelelo lomphunga:<0.01mmHg(20°C)<br /> Refractivity:n20/D1.441(lit.)
Indawo edanyazayo:280°F
PH ixabiso:6-7(100g/l,H2O,20°C)
Idatha yoKhuseleko
Yeyempahla eyingozi
Ikhowudi yeCustoms: 2909499000
Ixabiso lembuyekezo yeRhafu yokuThumela ngaphandle(%):13%
Isicelo
I-Didipropylene glycol yi-alcohol organic substance, esetyenziswa kakhulu emasimini afuna izinto ezisemgangathweni eziphezulu ezifana neziqholo, izithambiso, i-detergents kunye nezongezo zokutya.Le yokugqibela iphantsi ngokwexabiso, kwaye isetyenziswa ngokubanzi njenge-solvent ye-industrial engadingi umgangatho ophezulu we-DPG, kunye nezinto ezibonakalayo zokuvelisa i-polyester engaxutywanga kunye ne-nitrocellulose varnish.
(1) I-Dipropylene glycol sesona sinyibilikisi sifanelekileyo kwiziqholo ezininzi kunye nezithambiso.Le mveliso eluhlaza inamanzi abalaseleyo, i-oyile kunye ne-hydrocarbon co-solubility kwaye inevumba elithambileyo, ukucaphuka okuncinci kwesikhumba, ubuthi obuphantsi, ukuhanjiswa kwe-isomer efanayo kunye nomgangatho ogqwesileyo.
(2) I-Dipropylene glycol ingasetyenziselwa njenge-agent yokudibanisa kunye ne-ejenti yokuthambisa kwizicelo ezininzi zokuthambisa.Kwi-perfumery, i-dipropylene glycol isetyenziswe ngaphezu kwe-50%;kwezinye izicelo, idipropylene glycol isetyenziswa ngokubanzi ngaphantsi kwe-10% ngobunzima.Ezinye izinto ezisetyenziswa kwimveliso ethile ziquka: izithambiso zokuphotha iinwele, izicoci zolusu (iikhrimu ezibandayo, ukuhlamba umzimba, iibhafu kunye nezithambiso zomzimba) izibulala-vumba, ubuso, iimveliso zokhathalelo lwezandla kunye nomzimba, iimveliso zokhathalelo lwesikhumba kunye neziqholo zomlomo.
Ukulungiselela: Kwi-5L reaction kettle, yongeza i-30g ye-sodium methanol, i-750g ye-propylene oxide kunye ne-2250g ye-propylene glycol njenge-alkali catalyst, shaja i-nitrogen ukuya kwi-0.3MPa, vula i-stirring, shushu ukuya kwi-110℃ kwimizuzu engama-30, ukhulule i-nitrogen ngokuthe ngcembe ngexesha lemizuzu engama-30. inkqubo yokufudumeza, gcina uxinzelelo kwi-kettle kwi-0.3MPa xa ufudumeza ukuya kwi-120 ℃ kwi-Chemicalbook, ixesha lokuphendula iiyure ze-2.Emva kokuba impendulo igqityiwe, pholisa kwaye ucinezele izinto ezingamanzi kwiketile.Imveliso yokusabela yahlalutywa yi-chromatography yegesi kunye nokucoceka kwemveliso kwakuyi-99.87%;indawo yokukhenkceza yemveliso efunyenwe phantsi kwemeko ye-alkaline catalyst yayingu-4℃.
