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

I. Nga tikanga tirotiro
1. Te rewa
Ka whakamahia te taputapu ira whakarewa mamati
Hipanga 2: Ihirangi
2.1 Reagents
Hipanga 1: waikawa Formic
2. Te waikawa acetic glacial
3. Te wairewa titration paerewa waikawa perchloric (C=0.1000mol/l)
4. Wai tohu Waiata Waiata: 5g/l.
2.2 Nga taputapu me nga taputapu
1. Ipurau 150ml
2. Microburet: 10ml
2. 3 Nga mahi tātari
2. 3. Ka ata paunatia e au te 300mg o te tauira kua whakamarokehia i mua i te 105 ℃ mo te 3h, ka maka ki roto ki te 150ml Peteere, ka tapirihia te 3ml o te waikawa formic, ka tapirihia te 50ml o te waikawa tio acetic, ka tapirihia kia 2 nga pata o te wairewa whakamatautau karaihe karaihe ( TS-74), me te titrate ki te 0.1mol/L waikawa perchloric tae noa ki te pito mutunga kakariki ranei kia ngaro rawa te kikorangi.
2. 3. 2 Tikanga tatau
He rite te X ki te C (V1-V2) wa 0.2042 / M wa 100
Ko te C te kukū o te wairewa titration paerewa waikawa perchloric, e whakaatuhia ana ki nga kiore mo ia rita (mol/l).
Ko te V1 te rōrahi pau o te waikawa perchloric te wairewa whakakoi i roto i te wairewa i roto i te titration tauira, kua tohua ki te ml (ml).
Rōrahi i pau o te waikawa perchloric wairewa titration paerewa i roto i te whakamātautau pātea V2, kua whakaaturia ki te ml (ml)
0.2042 me te 1.00ml waikawa perchloric paerewa kua whakatairitehia te wahanga wai i te wa e whakaatuhia ana te kounga o tenei hua ki te G
M Te kounga o te tauira, kua tohua ki te karamu (g).
2. 4 Whakatikatika
Mēnā ka nui ake te rerekētanga o te pāmahana rūma i waenga i te otinga whakamātautau titration me te otinga paerewa waikawa perchloric te whakatikatika, me whakatikatika ano;Ki te kore, ka whakatikahia te kukū C1 o te wairewa paerewa waikawa perchloric kia rite ki te whakamatautau (2).
C2= C1/1+0.0011 (t1-t2)
Ko te 1+0.0011 te whakarea roha o te waikawa ahetiki hukapapa
Ko te waeine o te pāmahana rūma mo te whakatikatika T2 o te waikawa perchloric he Celsius (° C).
Ko te waeine o te pāmahana rūma e tātairitehia ai he tauira ko Celsius (° C).
C1 t2 ℃ te kukū otinga paerewa waikawa perchloric, i roto i nga kiore mo ia rita (MOL/L)
3. maroke me te kore taumaha
3.1 Taputapu:
Umu whakamaroke Thermostatic, 1/10,000 toenga.
3.2 Tikanga:
Tangohia te 1-2 karamu o nga tauira (tika ki te 0.5mg) ka maka ki roto i te pounamu kua whakamaroke-a-mua me te pauna pauna.Ka rite te matotoru o nga tauira ki raro o te pounamu pauna.Mo nga tauira, ka whakamarokehia i roto i te oumu thermoelectric (105±5 ℃) ki te taumaha tonu.
3.3 Te Tatau
Ko te X he m haunga te m1 kua wehea ki te m haunga te m2 wa 100
Kei hea: X- ihirangi makuku %
m1 -- Te taumaha o te tauira maroke me te pounamu ine g
m2 - Inehia te papatipu o te pounamu g
m- Te taumaha o te tauira g
3.4 Nga Tohu Maataki
1. Nga waahi aro: 1. Me hanga tauira whakarara mo te whakamaroke me te kore taumaha.E rua nga hua o tetahi tauira, a ko te hapa i waenganui i nga hua e rua kaua e neke ake i te 0.5%.
2. Me tupato te pauna, kia tika ki te 0.0001.
4 ki te hurihanga
4.1 Nga Tikanga
Ko te rama polarized rererangi e haere ana i roto i te wai, i te wairewa ranei o tetahi puhui kei roto etahi mahi whatu (ara, he matū mahi whatu) ka puta te hurihanga whatu, ka huri te rererangi o te rama polarized ki te taha maui, matau ranei.Ko te maha o nga nekehanga o te hurihanga ka kiia ko te hurihanga whatu.I tetahi pāmahana (e kiia ana ko te t, ka taea te 20 ℃, 25 ℃ ranei) tetahi roangaru o te marama (te marama konutai kowhai me te D, te roangaru λ 589.3nm) te marama polarized i roto i ia mirimiri kei roto 1g rauemi mahi whatu, te matotoru o te 1dm (ara, 10cm) otinga ka kiia te hurihanga he hurihanga whatu motuhake.
4.2 Nga whakaritenga
I whakamahia te raina D o te hihinga konutai (589. 3 nm) hei ine i te roa o te ngongo 1dm me te 20 ℃ te pāmahana.
4.3 Taputapu
4.3.1 Mamati autotropy (tika ±0.001°)
4.3.2 Taurite hiko (tika 0.0001g).
4.4 Tikanga Mahi
Tangohia te 3g o tenei hua, kia tika ki te 0.0001g, hoatu ki roto i te pounamu volumetric 100ml, taapirihia te waihano kia memeha ka waimeha ki te tauine, ruru pai.Horoihia te ngongo ine ki te iti o te wai mo etahi wa, katahi ka ata werohia te wai ki roto i te ngongo ine (kaua e puta he mirumiru), tuu te ngongo ine ki te gyroscope kia kitea, ka panuihia te panui hurihuri mo 3 nga wa whakarara.
4.5 Te Tatau
Ko te hurihanga motuhake o te L-glutamate Diethyl carbonate ki te konutai spectrum D-line i te 20 ℃ [Alpha]D20 i tatauhia penei:
[ɑ] D20 = alpha/m
Kei hea: α -- tau toharite o nga panui hurihuri putorino;
m -- kounga tauira.
4.6 Rerekētanga e whakaaetia ana: Ko te tino rereketanga o te tauira kotahi kaua e neke ake i te 0.02% ina ine rua.
4.7 Whakatupato
4.7.1 Me whakamahi te whakarewa hei whakatikatika i mua i ia inenga: I muri i te inenga, me mahi ano te whakatikatika hei whakatau mena ka huri te ira kore i te inenga.Mena he huringa, me whakatau ano te hurihanga whatu o te tauira.
4.7.2 Me whakamarama te tauira i muri i te whakakorenga me te waimehatanga;ki te kore, me tātari.
Hipanga 5 Te ahua
Ko te hua he Ma ki te paura microcrystalline ma-kore