H-Glu(OEt) -OEt · HCl CAS 1118-89-4 L-Glutamic Acid Diethyl Ester Hydrochloride Tsarkake> 99.0% (HPLC) Factory

I. Hanyoyin dubawa
1. Abun narkewa
Ana amfani da kayan aikin narkewar dijital
Mataki 2: Abun ciki
2.1 Reagents
Mataki 1: Formic acid
2. Glacial acetic acid
3. Perchloric acid daidaitaccen titration bayani (C=0.1000mol/l)
4. Crystal Violet mai nuna ruwa: 5g/l.
2.2 Kayan aiki da kayan aiki
1. Beaker 150ml
2. Microburet: 10ml
2.3 Matakan nazari
2. 3. Ina auna daidai 300mg na samfurin pre-bushe a 105 ℃ na 3h, sanya shi a cikin 150ml Bethel, ƙara 3ml na formic acid, ƙara 50ml na ice acetic acid, ƙara 2 saukad da na crystal violet gwajin bayani ( TS-74), kuma titrate tare da 0.1mol/L perchloric acid har sai ƙarshen ƙarshen kore ko har sai shuɗi ya ɓace gaba ɗaya.
2. 3. 2 Hanyar lissafi
X daidai yake da lokutan C (V1-V2) 0.2042 / M sau 100
C shine maida hankali na daidaitaccen maganin titration na perchloric acid, wanda aka bayyana a cikin moles a kowace lita (mol/l).
V1 shine ƙarar da aka cinye na daidaitaccen titration na perchloric acid wanda aka tattara a cikin samfurin titration, wanda aka bayyana a cikin ml (ml).
Adadin da aka cinye na daidaitaccen maganin titration na perchloric acid a cikin gwajin blank V2, wanda aka bayyana a cikin ml (ml)
0.2042 da 1.00ml perchloric acid daidaitaccen lokaci mai daɗaɗɗen ruwa lokacin da aka bayyana ingancin wannan samfurin a cikin G
M ingancin samfurin, wanda aka bayyana a cikin gram (g).
2. 4 Gyara
Idan bambance-bambancen zafin dakin da ke tsakanin maganin gwajin titration da daidaitaccen bayani na perchloric acid ya wuce 10 ℃, ya kamata a sake daidaita shi;In ba haka ba, za a gyara maida hankali C1 na daidaitaccen maganin perchloric acid bisa ga gwaji (2).
C2= C1/1+0.0011 (t1-t2)
1+0.0011 shine haɓaka ƙimar haɓakar glacial acetic acid
Naúrar zafin ɗaki don daidaitawar T2 na perchloric acid shine Celsius (° C).
Naúrar zafin ɗakin da aka ƙididdige samfurin shine Celsius (° C).
C1 t2 ℃ perchloric acid misali taro taro, a moles da lita (MOL / L)
3. Bushewa da nauyi
3.1 Kayan aiki:
Tanda bushewar thermostatic, ma'auni 1/10,000.
3.2 Tsari:
Ɗauki gram 1-2 na samfurori (daidai zuwa 0.5mg) kuma saka su a cikin wani busasshen nauyi-bushe da kuma auna kwalban auna.Samfuran za su sami kauri iri ɗaya a ƙasan kwalaben awo.Amma ga samfurori, za a bushe su a cikin tanda mai zafi (105 ± 5 ℃) zuwa nauyin nauyi.
3.3 Lissafi
X shine m debe m1 raba ta m debe m2 sau 100
Inda: X- danshi %
m1 -- Nauyin busassun samfurin da kwalbar auna g
m2 - Auna yawan kwalban g
m- Nauyin samfurin g
3.4 Abubuwan Hankali
1. Mahimman hankali: 1. Dole ne a yi samfurori masu dacewa don bushewa da rashin nauyi.Samfura ɗaya yana da sakamako guda biyu, kuma kuskuren tsakanin sakamakon biyu bai wuce 0.5% ba.
2. Dole ne a kula da nauyi, daidai da 0.0001.
4 zuwa juyawa
4.1 Ka'idoji
Hasken da ke wucewa ta cikin ruwa ko bayani na fili mai ɗauke da wasu ayyuka na gani (wato, wani abu mai aiki da gani) na iya haifar da jujjuyawar gani, yana sa jirgin na hasken wuta ya juya zuwa hagu ko dama.Adadin digiri na juyawa ana kiransa juyawa na gani.A wani zafin jiki (yawanci ana bayyana ta t, na iya zama 20 ℃ ko 25 ℃) wani tsayin haske na haske (hasken rawaya na sodium tare da D, tsayin tsayin λ 589.3nm) hasken wuta ta kowace millilita mai ɗauke da kayan aikin gani na 1g, kauri na 1dm (wato, 10cm) bayani lokacin da ake kira jujjuyawar juyawa ta musamman.
4.2 Bukatun
An yi amfani da layin D na bakan sodium (589. 3 nm) don auna tsayin bututu na 1dm kuma zazzabi ya kasance 20 ℃.
4.3 Kayan aiki
4.3.1 Dijital autotropy (daidaita ± 0.001°)
4.3.2 Ma'aunin lantarki (daidai 0.0001g).
4.4 Hanyar Aiki
Ɗauki 3g na wannan samfurin, daidai da 0.0001g, saka shi a cikin kwalban volumetric 100ml, ƙara ethanol don narkewa kuma a tsoma shi zuwa sikelin, girgiza sosai.Kurkura bututun aunawa tare da ɗan ƙaramin ruwa na sau da yawa, sannan a hankali saka ruwan a cikin bututun awo (kada ku sanya kumfa ya faru), sanya bututun aunawa a cikin gyroscope don ganowa, sannan karanta karatun juyawa na gani don Sau 3 a layi daya.
4.5 Lissafi
An ƙididdige takamaiman juyawa na L-glutamate Diethyl carbonate zuwa sodium bakan D-line a 20 ℃ [Alpha] D20 kamar haka:
[ɑ] D20 = alpha/m
Inda: α -- matsakaicin adadin karatun jujjuyawar kubik;
m - samfurin inganci.
4.6 Bambanci da aka yarda: Cikakken bambanci na samfurin ɗaya ba zai wuce 0.02% lokacin da aka auna sau biyu ba.
4.7 Hattara
4.7.1 Ya kamata a yi amfani da Solvent azaman gyare-gyare mara kyau kafin kowane aunawa: Bayan aunawa, yakamata a sake yin gyare-gyare don tantance ko sifili ya canza yayin aunawa.Idan akwai wasu canje-canje, ya kamata a sake ƙaddara jujjuyawar gani na samfurin.
4.7.2 Samfurin ya kamata a bayyana bayan rushewa da dilution;in ba haka ba, sai a tace.
Mataki na 5 Bayyanawa
Samfurin ya zama fari zuwa fari-fari microcrystalline foda