Trans-2-Hexen-1-Al Diethyl Acetal (CAS # 54306-00-2)
| Hazard Cov Cim | Xi-xaj |
| Risk Codes | 36/37/38 – Khaus qhov muag, ua pa thiab tawv nqaij. |
| Kev nyab xeeb piav qhia | S26 - Thaum sib cuag nrog lub qhov muag, yaug tam sim ntawd nrog dej txaus thiab nrhiav kev kho mob. S36/37/39 - Hnav cov khaub ncaws tiv thaiv tsim nyog, hnab looj tes thiab tiv thaiv qhov muag / ntsej muag. |
| WGK Germany | 3 |
Trans-2-Hexen-1-Al Diethyl Acetal (CAS Nr .: 54306-00-2) qhia
khoom ntiag tug
Cov tsos mob: Nws feem ntau tshwm sim raws li cov xim tsis muaj xim rau lub teeb daj pob tshab kua, uas ua rau nws yooj yim dua rau kev khiav lag luam hauv cov txheej txheem tshuaj lom neeg xws li kev thauj mus los thiab kev sib xyaw.
Smell: Nws muaj qhov tshwj xeeb fruity tsw, uas yog tshiab thiab ntuj. Qhov no feature tau nyiam ntau xim nyob rau hauv lub tshav pob ntawm fragrance essence, thiab yuav siv tau raws li lub tseem ceeb raw khoom rau blending fruity tsw.
Solubility: Nws tuaj yeem yaj tau zoo nyob rau hauv feem ntau cov kuab tshuaj organic, xws li ethanol, ether, acetone, thiab lwm yam, ua rau nws yooj yim rau kev sib xyaw thiab sib cuag nrog lwm cov reactants hauv cov organic synthesis cov tshuaj tiv thaiv; Lub solubility hauv dej yog qhov txwv, uas ua raws li txoj cai kev sib cais ntawm cov organic tebchaw nrog cov ntsiab lus siab carbon.
Boiling point: Nws muaj qhov tshwj xeeb ntawm qhov kub kub, uas yog lub hauv paus tseem ceeb rau kev sib cais thiab kev ua kom huv si xws li distillation thiab rectification. Lub boiling point ntawm cov qauv nrog txawv purities yuav txawv me ntsis, thiab qhov zoo thiab purity ntawm cov khoom yuav raug soj ntsuam ua ntej los ntawm kev ntsuas qhov boiling point.
4 、 Cov khoom siv tshuaj lom neeg
Acetal hydrolysis cov tshuaj tiv thaiv: Nyob rau hauv acidic tej yam kev mob, lub diethylacetal qauv nyob rau hauv lub molecule yog nquag hydrolysis, tsim aldehyde pawg thiab ethanol dua. Cov yam ntxwv no feem ntau yog siv rau hauv cov organic synthesis rau kev ua haujlwm pab pawg hloov pauv lossis aldehyde pab pawg tiv thaiv, thiab raug tso tawm thaum lub sijhawm tsim nyog los koom nrog cov kev tshwm sim tom ntej.
Muab ob npaug rau kev sib txuas ntxiv cov tshuaj tiv thaiv: Cov pa roj carbon ob daim ntawv cog lus tuaj yeem ua raws li qhov chaw nquag thiab muaj kev cuam tshuam ntxiv nrog hydrogen, halogens, thiab lwm yam. Los ntawm kev tswj cov tshuaj tiv thaiv kab mob thiab reagent ntau npaum li cas, cov txheej txheem ntawm cov derivatives tuaj yeem xaiv tau, ua kom muaj kev sib txawv ntawm cov tebchaw.
Cov tshuaj tiv thaiv oxidation: Raws li qhov kev txiav txim ntawm cov oxidants tsim nyog, cov molecules tuaj yeem raug oxidation, ob npaug ntawm daim ntawv cog lus, los yog ntxiv oxidation ntawm aldehyde pawg los tsim cov khoom sib xws oxidation, muab txoj hauv kev rau kev sib txuas ntawm lwm cov tebchaw.
5. Synthesis method
Txoj kev siv hluavtaws feem ntau yog pib nrog trans-2-hexenal thiab ua rau nws nrog anhydrous ethanol nyob rau hauv lub xub ntiag ntawm acidic catalysts xws li qhuav hydrogen chloride gas, p-toluenesulfonic acid, thiab lwm yam. Cov txheej txheem cov tshuaj tiv thaiv yuav tsum nruj tswj kub, feem ntau nyob rau hauv lub thaj tsam ntawm qhov kub thiab txias mus rau chav tsev kub, los tiv thaiv sab kev tshwm sim los ntawm qhov tshwm sim; Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog los xyuas kom meej qhov chaw tsis muaj dej, vim tias muaj dej tuaj yeem thim rov qab cov tshuaj tiv thaiv aldol thiab cuam tshuam rau kev tawm los. Tom qab cov tshuaj tiv thaiv tiav lawm, cov catalyst feem ntau neutralized nrog alkaline tov, thiab ces sib cais los ntawm distillation, rectification thiab lwm txoj kev kom tau high-purity lub hom phiaj cov khoom.
