L-Glutamic Acid CAS 56-86-0 (H-Glu-OH) Mayeso 98.5 ~ 100.5% Factory High Quality

Kutumiza kwa Solution
Tengani mankhwalawa L.Mukawonjezera 2mol/L hydrochloric acid solution (20ml) kuti isungunuke, yesani kufalikira kwa mafunde a 430nm ndi UV-visible spectrophotometry (General rule 0401), ndipo kutumizira sikuyenera kuchepera 98.0%.
Chloride
Tengani 0.30g ya mankhwalawa ndikuyiyang'ana motsatira malamulo (General rule 0801).Poyerekeza ndi njira yowongolera yopangidwa ndi 6.0ml ya sodium chloride solution, sayenera kukhala yokhazikika (0.02%).
Sulfate
Tengani 0,50g wa mankhwala, kuwonjezera 2ml wa dilute hydrochloric acid ndi 5ml madzi, kugwedeza kupasuka, fufuzani malinga ndi lamulo (General ulamuliro 0802), ndi kuyerekeza ndi njira ulamuliro zopangidwa muyezo potaziyamu sulfate njira, palibenso anaikirapo (0,02) %).
Ammonium Salt
Tengani 0.10g ya mankhwalawa ndikuwunika molingana ndi lamulo (General rule 0808).Poyerekeza ndi njira yowongolera yopangidwa ndi 0,02% ya njira yokhazikika ya ammonium chloride, sikhala yozama ().
Ma Amino Acids ena
Tengani mankhwalawa, onjezerani 0.5mol/L hydrochloric acid yankho kuti musungunuke ndi kusungunula kuti mukonzekere yankho lomwe lili ndi pafupifupi 10 mg pa 1ml ngati njira yoyesera;Tengani 1ml kuti muyezedwe molondola, mu botolo la 0.5, tsitsani muyeso ndi mol / L hydrochloric acid solution, gwedezani bwino, ndikugwiritsa ntchito njira yothetsera, A 0.5mol / L hydrochloric acid solution anawonjezeredwa, kusungunuka ndi kuchepetsedwa kuti mukonzekere. yankho munali pafupifupi 10 mg wa glutamic acid ndi MG wa asidi aspartic pa 1ml, motero, monga njira yothetsera dongosolo.Malinga ndi mayeso woonda wosanjikiza wa chromatography (General 0502), jambulani 5ul pa chilichonse mwa njira zitatu zomwe tafotokozazi, motsatana, pa silika gel G mbale yopyapyala, yokhala ndi n-butanol-madzi-glacial acetic acid (2:1:1) ) kupanga, kufalitsa, kuuma, kupoperani ndi ninhydrin mu acetone solution (1-50), kutentha pa 80°C mpaka mawanga awonekere, ndipo fufuzani nthawi yomweyo.Njira yothetsera vutoli iyenera kuwonetsa malo omveka bwino, ndipo njira yothetsera vutoli iyenera kusonyeza mawanga awiri olekanitsidwa.Ngati yankho loyesa likuwonetsa mawanga odetsedwa, mtunduwo suyenera kukhala wozama (0.5%) kuposa malo akulu owongolera.
Kutaya pa Kuyanika
Tengani mankhwalawa, owuma mpaka kulemera kosalekeza pa 105 ℃, kuwonda sayenera kupitirira 0.5% (General ulamuliro 0831).
Zotsalira pa Ignition (monga Sulfated)
Tengani l.0g ya chinthuchi ndikuchiyang'ana molingana ndi malamulo (General Law 0841).Zotsalira zomwe zatsala siziyenera kupitirira 0.1%.
Mchere wa Chitsulo
Tengani 2.0g ya mankhwalawa, onjezerani 6mL wa dilute hydrochloric acid ndi madzi okwanira, kutentha kuti musungunuke, kuziziritsa, kuwonjezera madzi ku 25ml, ndikuyang'ana motsatira malamulo (General rule 0807), sayenera kukhala yozama (0.0005% ) kuposa njira yowongolera yopangidwa ndi chitsulo chokhazikika.
Zitsulo Zolemera
Zotsalira zomwe zatsala pansi pa chinthu chotengera chotsalira choyatsira sizikhala ndi magawo opitilira 10 pa miliyoni imodzi yazitsulo zolemera zikafufuzidwa ndi lamulo (General Principles 0821, Law II).
Mchere wa Arsenic
Tengani 2.0g ya mankhwalawa, onjezerani 5ml wa hydrochloric acid ndi 23ml wa madzi kuti musungunuke, fufuzani motsatira malamulo (General Principles 0822 lamulo loyamba), ayenera kutsatira zomwe zili (0.0001%).
Purojeni
Mankhwalawa amachepetsedwa ndi jekeseni wa sodium kolorayidi kuti apange yankho lomwe lili ndi 20mg pa lml, kutenthedwa kuti lisungunuke, lolani kuziziritsa mpaka 37 ° C, ndipo fufuzani molingana ndi lamulo (General Malamulo 1142), mlingo malinga ndi kulemera kwa thupi la kalulu pa jekeseni wa lkg 10ml. , ziyenera kutsatira zomwe zaperekedwa.(Ya jakisoni)
56-86-0 - Kutsimikiza kokhutira
Tengani mankhwalawa pafupifupi 0.25g, kulemera kwake molondola, onjezani madzi otentha 50ml kuti asungunuke, asiye kuziziritsa, onjezani madontho 5 a bromothymol blue indicator solution, ndipo gwiritsani ntchito sodium hydroxide titration solution (0.1 mol/L) titration to the solution from yellow to blue- wobiriwira.1 ml iliyonse ya sodium hydroxide titration solution (0.1 mol/L) imafanana ndi 14.71mg ya C5H9N04.