Kayayyaki
Kwarewa a cikin samar da barasa na propargyl, 1,4 butynediol da 3-chloropropyne.
1, 4-butanediol Properties
Jiki da sinadarai Properties
Ruwa mara launi, mai flammable, mai narkewa cikin ruwa, methanol, ethanol, acetone, polyether da
polyester polyols, dan kadan mai narkewa a cikin ether, wanda ba a iya jurewa tare da aliphatic da hydrocarbons na kamshi.
Tsabtace samfuran masana'antu gabaɗaya ya fi 99% ko 99.5%, danshi bai wuce 0.1% ba, ƙimar sulfur bai wuce 0.1% ba, chroma (APHA) ƙasa da 25.
Akwai fiye da 20 hanyoyin samar da 1, 4-butanediol, amma kawai 5 ~ 6 ne ainihin masana'antu.A halin yanzu, manyan hanyoyin masana'antu sun haɗa da hanyar Reppe da aka gyara, hanyar hydrogenation na anhydride na namiji, hanyar esterification hydrogenation na maleic anhydride, hanyar propylene oxide da hanyar butadiene.
Halaye da Amfani
1, 4-butanediol ne mai asali sinadaran da lafiya sinadaran albarkatun kasa, yadu amfani a samar da PBT injiniya robobi da zaruruwa, kira na tetrahydrofuran (THF), polytetramethylene ether diol (PTMEG, samu ta THF polymerization), polyether high yi elastomer da spandex na roba fiber (PTMEG da diisocyanate kira), unsaturated polyester guduro, polyester polyol, butanediol ether sauran ƙarfi, kazalika da Pharmaceutical da kwaskwarima masana'antu.1, 4-butanediol kuma ana iya amfani dashi don samar da N-methylpyrrolidone, adipic acid, acetal, maleic anhydride, 1, 3-butadiene da sauransu.
Y-butanolactone, samfurin ƙasa na 1, 4-butanediol, shine albarkatun kasa don samar da samfurori na 2-pyrrolidone da N-methylpyrrolidone.Daga wannan, an samo jerin samfurori masu daraja irin su vinyl pyrrolidone da polyvinyl pyrrolidone, waɗanda aka yi amfani da su sosai a fannin magungunan kashe qwari, magunguna da kayan shafawa.
A cikin filin POLYURETHANE, ban da haɗin polytetrahydrofuran polyol, wanda aka fi amfani dashi a cikin kira na polyester diol kuma ana amfani dashi azaman elastomer, microporous polyurethane takalma sarkar, polybutanediol adipate ester polyurethane yana da kyau crystallization.
A guba naLow toxicity, m guba darajar na baka LD50 = 1500-1780mg / kg a cikin berayen, transdermal sha guba darajar zomo LD50>2000mg/kg.
