Adenine CAS 73-24-5 Assay 98.0%~102.0% (Titration) High Purity Factory

Adenine ili ndi NLT 98.0% ndi NMT 102.0% ya C 5H5N5, yowerengedwa pa maziko owuma.
CHIZINDIKIRO
A. KUYAMBIRA KWA INFRARED <197K>
ZOYESA
NTCHITO
Chitsanzo: 200 mg wa Adenine
Chopanda kanthu: 80 mL wosakaniza wa 100 mL wa glacial acetic acid ndi 300 mL wa acetic anhydride
Titrimetric System
Mode: Direct titration
Titrant: 0.1 N pa chloric acid VS yokhazikika motere: Chotsani 300 mg wa potassium biphthalate ku beaker ya 150-mL ndipo, poyambitsa, sungunulani mu 80 mL wosakaniza wa 100 mL wa glacial acetic acid ndi 300 mL wa acetic anhydride.Titrate ndi yankho la chloric acid.20.42mg iliyonse ya potaziyamu biphthalate ndi yofanana ndi 1 mL ya 0.1 N perchloric acid.
Kuzindikira komaliza: Potentiometric
Kusanthula: Sungunulani Chitsanzo mu 80 ml ya osakaniza 100 mL wa glacial acetic acid ndi 300 mL acetic anhydride poyambitsa, ndi titrate ndi Titrant.Werengerani peresenti ya Adenine (C5H5N5) pagawo lomwe latengedwa:
Zotsatira = [(V − B) × N × F × 100]/W
V = Voliyumu ya titrant (mL)
B = voliyumu yopanda kanthu (mL)
N = chizolowezi chokhazikika (mEq/mL)
F = chinthu chofanana, 135.13 mg/mEq
W = kulemera kwa Zitsanzo (mg)
Njira zolandirira: 98.0% -102.0% pazowuma
ZOCHITSA
Zowonongeka Zachilengedwe
KUYATSA ZOKHALA <281>: NMT 0.1%
ZINTHU ZONSE, Njira II <231>: NMT 10ppm
Zowonongeka Zachilengedwe
NTCHITO
pH 7.0 phosphate buffer: Sungunulani 4.54 g wa monobasic potassium phosphate m’madzi kuti mupange 500 ml ya yankho.Sungunulani 4.73 g wa anhydrous dibasic sodium phosphate m'madzi kuti mupange 500 ml ya yankho.Sakanizani 38.9 mL ya monobasic potassium phosphate solution ndi 61.1 ml ya dibasic sodium phosphate solution.Sinthani, ngati kuli kofunikira, powonjezerapo yankho la dibasic sodium phosphate ku pH ya 7.0.
Sungunulani mlingo woyenera wa USP Adenine RS m'madzi otentha, ozizira, ndi kusungunula mochulukira ndi madzi kuti mupeze yankho lodziwika bwino la 0.19 mg/mL.
Mayankho okhazikika: Pipet 5-mL magawo a Standard stock solution mu 100-mL volumetric flasks zitatu, ndi kuchepetsedwa ndi 0.10 N hydrochloric acid, 0.010 N sodium hydroxide, ndi pH 7.0 phosphate buffer, motsatana, mpaka voliyumu.
Sample stock solution: Sungunulani mulingo woyenera wa Adenine m'madzi otentha, ozizira, ndi kusungunula mochulukira ndi madzi kuti mupeze yankho lodziwika bwino la 0.19 mg/mL.
Sample stock solution: Sungunulani mulingo woyenera wa Adenine m'madzi otentha, ozizira, ndi kusungunula mochulukira ndi madzi kuti mupeze yankho lodziwika bwino la 0.19 mg/mL.
Zitsanzo zothetsera: Pipeti 5-mL magawo a Sample stock solution mu 100-mL volumetric flasks zitatu, ndi kuchepetsedwa ndi 0.10 N hydrochloric acid, 0.010 N sodium hydroxide, ndi pH 7.0 phosphate buffer, motsatana, mpaka voliyumu.
Zinthu za Spectrometric
(Onani Spectrophotometry ndi Kuwala-Kuwala <851>.)
Njira: UV-Vis
Wavelegth osiyanasiyana: 220-320 nm
Cell: 1cm
Chopanda kanthu: Madzi
Kusanthula
Zitsanzo: Mayankho okhazikika ndi mayankho achitsanzo
Njira zolandirira: Zomwe zimayamwa, zomwe zimawerengedwa pazifukwa zouma, pamafunde amphamvu kwambiri, pazifukwa zilizonse zofananira sizisiyana ndi 2.0%.
MAYESO AKE
KUYANUKA KWA LOSSON <731>: Yanikani chitsanzo pa 110 ° kwa 4 h: imataya NMT 1.0% ya kulemera kwake.
NITROGEN CONTENT, Njira II 〈461〉: 50.2%–53.4%, yowerengedwa pa maziko owuma
ZOWONJEZERA ZOFUNIKA
KUPAKA NDI KUSEKA: Sungani m’zotengera zotsekedwa bwino.
MFUNDO ZA USP REFERENCE <11>
USP Adenine RS