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

I. Maitiro ekuongorora
1. Kunyungudika
Digital melting point chiridzwa chinoshandiswa
Danho rechipiri: Zviri mukati
2.1 Reagents
Danho 1: Formic acid
2. Glacial acetic acid
3. Perchloric acid yakajairika titration solution (C=0.1000mol/l)
4. Crystal Violet chiratidzo chemvura: 5g / l.
2.2 Zviridzwa uye midziyo
1. Beaker 150ml
2. Microburet: 10ml
2. 3 Ongorora matanho
2. 3. Ndinonyatsoyera nezve 300mg yemuenzaniso wakagara wakaomeswa pa 105 ℃ ye 3h, uise mu 150ml bethel, wedzera 3ml ye formic acid, wedzera 50ml ye ice acetic acid, wedzera madonhwe maviri ekristal violet test solution ( TS-74), uye titrate ne 0.1mol/L perchloric acid kusvika pakupera kwegirinhi kana kusvika bhuruu yanyangarika zvachose.
2. 3. 2 Nzira yekuverenga
X yakaenzana neC (V1-V2) nguva 0.2042 / M nguva 100
C ndiko kusangana kweperchloric acid standard titration solution, inoratidzirwa mumamoles parita (mol/l).
V1 ndiyo inopedzwa vhoriyamu yeperchloric acid yakajairwa titration yakamisikidzwa mhinduro mumuenzaniso titration, inoratidzwa mu ml (ml).
Vhoriyamu inopedzwa yeperchloric acid standard titration solution muV2 blank test, inoratidzwa mu ml (ml)
0.2042 uye 1.00ml perchloric acid standard titrated concentrated fluid chikamu kana kunaka kwechigadzirwa ichi kuchiratidzwa muG.
M Hunhu hwemuenzaniso, hunoratidzwa mumagiramu (g).
2. 4 Kururamisa
Kana mutsauko wetembiricha yemukamuri pakati pemhinduro yetitration bvunzo uye calibration perchloric acid yakajairwa mhinduro inodarika 10 ℃, inofanirwa kuverengerwa zvakare;Zvikasadaro, iyo C1 yeperchloric acid yakajairwa mhinduro ichagadziriswa zvinoenderana nebvunzo (2).
C2= C1/1+0.0011 (t1-t2)
1+0.0011 ndiyo yekuwedzera coefficient yeglacial acetic acid
Chikamu chetembiricha yekamuri yeT2 calibration yeperchloric acid iCelsius (° C).
Chiyero chetembiricha yekamuri umo sample inoiswa titrated iCelsius (° C).
C1 t2 ℃ perchloric acid yakajairwa mhinduro, mumamoles parita (MOL/L)
3. Yakaoma uye isina uremu
3.1 Zvishandiso:
Thermostatic drying oven, 1/10,000 chiyero.
3.2 Maitiro:
Tora 1-2 magiramu emasampuli (yakarurama kusvika ku0.5mg) uye uise mu pre-yakaomeswa inogara-huremu uye yakayerwa kuyera bhodhoro.Mienzaniso ichave neukobvu hwakafanana pazasi pebhodhoro rekuyera.Kana ari masampuli, anozoomeswa mu (105 ± 5 ℃) thermoelectric oveni kune huremu hwekugara.
3.3 Kuverenga
X is m minus m1 yakakamurwa nem minus m2 ka100
Kupi: X- mwando %
m1 -- Huremu hwemuenzaniso wakaoma pamwe nekuyeresa bhodhoro g
m2 - Edza kuwanda kwebhodhoro g
m- Huremu hwemuenzaniso g
3.4 Mapoinzi ekutarisisa
1. Pfungwa dzekutarisisa: 1. Parallel samples dzinofanira kuitwa pakuomeswa uye kusarema.Sample imwe ine mhedzisiro mbiri, uye kukanganisa pakati pemigumo miviri haina kupfuura 0.5%.
2. Kuyera kunofanira kungwarira, kwakarurama kusvika ku0.0001.
4 kune kutenderera
4.1 Misimboti
Plane-polarized light ichipfuura nemumvura kana mhinduro yemukomboni une zvimwe zvinoonekwa (kureva kuti, chinhu chinobatika chemaziso) chinogona kukonzera kutenderera kwemaziso, zvichiita kuti ndege yepolarized light itenderere kuruboshwe kana kurudyi.Nhamba yemadhigirii ekutenderera inonzi optical rotation.Pane imwe tembiricha (inowanzo kuratidzwa ne t, inogona kuita 20 ℃ kana 25 ℃) imwe wavelength yechiedza (yero sodium mwenje ine D, wavelength λ 589.3nm) polarized mwenje kuburikidza neimwe milliliter ine 1g optical chiitiko zvinhu, ukobvu hwe1dm. (kureva, 10cm) mhinduro kana kutenderera kunonzi kutenderera chaiko.
4.2 Zvinodiwa
Iyo D line ye sodium spectrum (589. 3 nm) yakashandiswa kuyera hurefu hwechubhu ye1dm uye tembiricha yaive 20 ℃.
4.3 Zviridzwa
4.3.1 Digital autotropy (kururama ±0.001°)
4.3.2 Electronic balance (yakarurama 0.0001g).
4.4 Operation Method
Tora 3g yechigadzirwa ichi, chakarurama ku 0.0001g, chiise mubhodhoro re 100ml volumetric, wedzera ethanol kuti inyunguduke uye inyungudze kuchiyero, zunza zvakanaka.Shenesa chubhu yekuyeresa nekashoma kemvura kakati wandei, wobva wapinza mvura yacho zvishoma nezvishoma muchubhu yekuyeresa (usaite kuti mabubbles aitike), isa chubhu yekuyeresa mugyroscope kuti ionekwe, uye uverenge kuverenga kutenderera kwemaziso. 3 nguva dzakafanana.
4.5 Kuverenga
Iyo chaiyo kutenderera kweL-glutamate Diethyl carbonate kune sodium spectrum D-mutsara pa20 ℃ [Alpha] D20 yakaverengerwa seizvi:
[ɑ] D20 = alpha/m
Ikoko: α -- avhareji nhamba yekuverenga cubic kutenderera;
m -- mhando yemhando.
4.6 Musiyano unobvumirwa: Musiyano wakakwana weiyo sampuro imwe chete haungapfuuri 0.02% kana ukayerwa kaviri.
4.7 Chengetedzo
4.7.1 Solvent inofanira kushandiswa seyakakwana chiyero pamberi pechiyero chimwe nechimwe: Mushure mekuyerwa, kuenzana kunofanira kuitwa zvakare kuona kana zero point inoshanduka panguva yekuyerwa.Kana pane chero shanduko, kutenderera kwemaziso kwemuenzaniso kunofanira kugadziriswa zvakare.
4.7.2 Sample inofanira kujekeswa mushure mekuparadzwa uye dilution;zvikasadaro, inofanira kusefa.
Danho 5 Kuonekwa
Chigadzirwa chacho chichave Chechena kusvika kune-chena microcrystalline poda