D-Histidine CAS 351-50-8 HD-His-OH Mayeso 98.5~101.0% Factory

pH
tengani 1.0g ya mankhwalawa, onjezerani 50ml ya madzi kuti musungunuke, ndikuyesa motsatira malamulo (Lamulo la General 0631).Mtengo wa pH uyenera kukhala 7.0 ~ 8.5.
Kutumiza kwa Solution
Tengani 0.60g ya mankhwalawa, onjezani madzi 20ml kuti asungunuke, malinga ndi UV-yowoneka spectrophotometry (General lamulo 0401), yesani transmittance pa 430nm wavelength, osachepera 98.0%.
Chloride
Tengani 0.25g ya mankhwalawa ndikuyiyang'ana motsatira malamulo (General Law 0801).Poyerekeza ndi njira yowongolera yopangidwa ndi 0.02% ya sodium chloride solution, sayenera kukhala yokhazikika ().
Sulfate
Tengani 1.0g ya mankhwalawa ndikuyiyang'ana molingana ndi lamulo (General Law 0802).Poyerekeza ndi njira yowongolera yopangidwa ndi 0,02% ya njira yokhazikika ya potaziyamu sulphate, sayenera kukhala yokhazikika ().
Ammonium Salt
tengani 0.10g ya mankhwalawa ndikuyiyang'ana 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 kuchuluka koyenera kwa mankhwalawa, onjezerani madzi kuti musungunuke ndikusungunula kuti mupange yankho lomwe lili ndi 10 mg pa lml ngati njira yoyesera;Tengani 1ml kuti muyese molondola ndikuyika mu botolo la 200ml, tsitsani kuti muyese ndi madzi, gwedezani bwino, ngati njira yothetsera;Tengani kuchuluka koyenera kwa mbiri ya histidine ndi kutchulidwa kwa proline motsatira, ndikuyika mu botolo loyezera lomwelo, madzi adawonjezeredwa kuti asungunuke ndi kuchepetsedwa kuti akonze yankho lomwe lili ndi pafupifupi 0.4mg iliyonse pa 1ml ngati njira yothetsera dongosolo.Malinga ndi chromatography woonda wosanjikiza (General 0502) mayeso, Jambulani 5 u1 wa aliyense wa njira zitatu pamwamba, motero mfundo pa silika gel osakaniza G woonda wosanjikiza mbale, ndi N-propanol-anaika ammonia njira (67:33) monga kupanga zosungunulira, kukulitsa, 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
kutenga mankhwala, youma pa 105 ℃ kwa maola 3, kuwonda sadzapitirira 0.2% (General ulamuliro 0831).
Zotsalira pa Ignition
Osapitirira 0.1% (General Law 0841).
Mchere wa Chitsulo
tengani 1.0g ya mankhwalawa ndikuyiyang'ana molingana ndi lamulo (General Law 0807).Poyerekeza ndi njira yowongolera yopangidwa ndi 0.001% yazitsulo zokhazikika, sizikhala zozama ().
Zitsulo zolemera
Izi mankhwala 1.0g, kuyendera malinga ndi lamulo (General Mfundo 0821 Lamulo loyamba), munali zitsulo zolemera sayenera upambana 10 mbali miliyoni.
Mchere wa Arsenic
tengani 2.0g wa mankhwalawa, onjezerani 23ml wa madzi kuti musungunuke, onjezerani 5ml wa hydrochloric acid, fufuzani molingana ndi lamulo (General lamulo 0822 lamulo loyamba), ayenera kutsatira malamulo (0.0001%).
Bakiteriya Endotoxin
Tengani mankhwalawa, fufuzani molingana ndi lamulo (General rule 1143), lg histidine yomwe ili ndi endotoxin iyenera kukhala yosakwana 6.0EU.(Ya jakisoni)
351-50-8 - Kutsimikiza kokhutira
Tengani mankhwalawa pafupifupi 0.15g, kulemera kwake kolondola, onjezani anhydrous formic acid 2ml kuti asungunuke, onjezerani glacial acetic acid 50ml, malinga ndi njira ya titration (General lamulo 0701), ndi perchloric acid titration solution (0.1 mol/L) titration, ndi zotsatira za titration zinakonzedwa ndi mayeso opanda kanthu.1 ml iliyonse ya perchloric acid titration solution (0.1 mol/L) imafanana ndi 15.52mg ya C6H9N302.