L-Glutamic Acid CAS 56-86-0 (H-Glu-OH) Kev Ntsuam Xyuas 98.5 ~ 100.5% Lub Hoobkas Zoo

Transmittance ntawm kev daws teeb meem
Noj cov khoom no l.Tom qab ntxiv 2mol / L hydrochloric acid tov (20ml) kom yaj, ntsuas qhov xa tawm ntawm lub wavelength ntawm 430nm los ntawm UV-pom spectrophotometry (Txoj cai 0401), thiab kev xa tawm yuav tsum tsis pub tsawg dua 98.0%.
Chloride
Noj 0.30g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0801).Piv nrog rau kev tswj cov tshuaj ua los ntawm 6.0ml ntawm standard sodium chloride tov, nws yuav tsum tsis txhob muaj ntau concentrated (0.02%).
Sulfate
Noj 0.50g ntawm cov khoom no, ntxiv 2ml ntawm dilute hydrochloric acid thiab 5ml dej, co kom yaj, xyuas raws li txoj cai (General txoj cai 0802), thiab muab piv nrog rau cov kev tswj cov tshuaj uas ua los ntawm cov txheej txheem poov tshuaj sulfate tov, tsis muaj ntau concentrated (0.02). %).
Ammonium ntsev
Noj 0.10g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0808).Piv nrog rau kev tswj cov tshuaj ua los ntawm 0.02% ntawm tus qauv ammonium chloride tov, nws yuav tsum tsis txhob tob ().
Lwm yam Amino Acids
Noj cov khoom no, ntxiv 0.5mol / L hydrochloric acid tov kom yaj thiab dilute los npaj cov tshuaj uas muaj txog 10 mg rau 1ml raws li kev tshuaj ntsuam xyuas;Siv 1ml rau kev ntsuas qhov tseeb, hauv 0.5 ntsuas lub khob, dilute rau lub teev nrog mol / L hydrochloric acid tov, co zoo, thiab siv raws li kev tswj kev daws, A 0.5mol / L hydrochloric acid tov tau ntxiv, yaj thiab diluted los npaj. ib qho tshuaj uas muaj txog 10 mg ntawm glutamic acid thiab MG ntawm aspartic acid ib 1ml, raws li, raws li ib tug system-tsim kua.Raws li cov txheej txheem nyias chromatography (General 0502), kos 5ul ntawm txhua qhov saum toj no peb cov kev daws teeb meem, feem, ntawm tib silica gel G nyias txheej phaj, nrog n-butanol-dej-glacial acetic acid (2: 1: 1). ) txhawm rau txhim kho, sib kis, qhuav, tshuaj tsuag nrog ninhydrin hauv cov tshuaj acetone (1-50), cua sov ntawm 80 ° C kom txog thaum muaj pob tshwm sim, thiab tshawb xyuas tam sim ntawd.Kev tswj kev daws teeb meem yuav tsum pom qhov pom tseeb, thiab cov txheej txheem siv tau yuav tsum pom ob qhov sib cais tag nrho.Yog tias cov tshuaj ntsuam xyuas qhia pom qhov tsis huv, cov xim yuav tsum tsis txhob sib sib zog nqus (0.5%) tshaj qhov chaw tseem ceeb ntawm kev tswj cov tshuaj.
Poob rau ziab
Noj cov khoom no, qhuav mus tas li qhov hnyav ntawm 105 ℃, qhov hnyav poob yuav tsum tsis pub tshaj 0.5% (Txoj cai 0831).
Residue ntawm Ignition (raws li Sulfated)
Noj l.0g ntawm cov khoom no thiab xyuas nws raws li txoj cai (Txoj cai 0841).Cov seem seem yuav tsum tsis pub tshaj 0.1%.
Hlau ntsev
Noj 2.0g ntawm cov khoom no, ntxiv 6mL ntawm dilute hydrochloric acid thiab ib tug tsim nyog tus nqi ntawm cov dej, tshav kub kom yaj, txias, ntxiv dej rau 25ml, thiab xyuas raws li txoj cai (General rule 0807), nws yuav tsum tsis txhob tob (0.0005%. ) dua li kev tswj cov tshuaj ua los ntawm cov txheej txheem hlau tov.
Hnyav Hlau
Cov seem tshuav nyob rau hauv cov khoom ntawm kev noj cov khoom siv hluav taws xob yuav tsum tsis txhob muaj ntau tshaj 10 feem ntawm ib lab ntawm cov hlau hnyav thaum kuaj xyuas los ntawm txoj cai lij choj (General Principles 0821, Law II).
Arsenic ntsev
Noj 2.0g ntawm cov khoom no, ntxiv 5ml ntawm hydrochloric acid thiab 23ml dej kom yaj, xyuas raws li txoj cai (General Principles 0822 thawj txoj cai), yuav tsum ua raws li cov kev cai (0.0001%).
Pyrogen
Cov khoom no yog diluted nrog sodium chloride txhaj los ua cov tshuaj uas muaj 20mg ib lml, rhuab kom yaj, cia txias rau 37 ° C, thiab xyuas raws li txoj cai (General rule 1142), koob tshuaj raws li tus luav lub cev hnyav ib lkg txhaj 10ml , yuav tsum ua raws li cov kev cai.(rau txhaj tshuaj)
56-86-0 - Kev txiav txim siab txog cov ntsiab lus
Noj cov khoom no txog 0.25g, precision hnyav, ntxiv boiling dej 50ml kom yaj, cia txias, ntxiv 5 tee ntawm bromothymol xiav qhia daws teeb meem, thiab siv sodium hydroxide titration tov (0.1 mol / L) titration rau cov tshuaj los ntawm daj mus rau xiav- ntsuab.Txhua 1 ml ntawm sodium hydroxide titration tov (0.1 mol / L) sib raug rau 14.71mg ntawm C5H9N04.