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

I-Adenine iqulethe i-NLT 98.0% kunye ne-NMT 102.0% ye-C 5H5N5, ibalwe ngokomisiweyo.
UKUCHAZA
A. UKUFUTSHWA KWE-IFRARED <197K>
UVAVANYO
INKQUBO
Isampuli: 200 mg ye-Adenine
Akunanto: 80 mL yomxube we-100 mL yeglacial acetic acid kunye ne300 mL yeacetic anhydride
Inkqubo yeTitrimetric
Imowudi: Ukubhalwa ngokuthe ngqo
I-Titrant: I-0.1 N nge-asidi ye-chloric VS esemgangathweni ngolu hlobo lulandelayo: Dlulisa i-300 mg ye-potassium biphthalate kwi-beaker ye-150-mL kwaye, ngokuvuselela, udibanise kwi-80 mL yomxube we-100 mL ye-glacial acetic acid kunye ne-300 mL ye-acetic anhydride.Titrate ngesisombululo se-chloric acid nganye.I-20.42mg nganye ye-potassium biphthalate ilingana ne-1 mL ye-0.1 N perchloric acid.
Ukubonwa kwendawo yokugqibela: I-Potentiometric
Uhlalutyo: Nciphisa iSampulu kwi-80 mL yomxube we-100 mL ye-acetic acid eyi-glacial kunye ne-300 mL ye-acetic anhydride ngokushukumisa, kunye ne-titrate nge-Titrant.Bala ipesenti yeAdenine (C5H5N5) kwisabelo esithathiweyo:
Isiphumo = [(V − B) × N × F × 100]/W
V = Isampulu yevolumu yetitrant (mL)
B = Umthamo wetitranti engenanto (mL)
N = ukuqheleka okuthe tye (mEq/mL)
F = i-equivalency factor, i-135.13 mg / mEq
W = ubunzima beSampuli (mg)
Indlela yokwamkela: 98.0% -102.0% kwisiseko esomileyo
UBUNGCOLA
Ukungcola Kwezinto Eziphilayo
OKUSHIYA OKUSHIYAYO <281>: NMT 0.1%
IIMETALI EZISINZI, Indlela II <231>: NMT 10ppm
Ukungcola Okuphilayo
INKQUBO
pH 7.0 isithinteli sephosphate: Nyibilika i-4.54 g ye-monobasic potassium phosphate emanzini ukwenza i-500 mL yesinyibiliko.Dibanisa i-4.73 g ye-anhydrous dibasic sodium phosphate emanzini ukwenza i-500 mL yesisombululo.Xuba i-38.9 mL yesisombululo se-monobasic potassium phosphate kunye ne-61.1 mL yesisombululo se-dibasic sodium phosphate.Lungisa, ukuba kuyimfuneko, ngokongezwa kwe-dropwise yesisombululo se-dibasic sodium phosphate kwi-pH ye-7.0.
Isisombululo sesitokhwe esisemgangathweni: Ukunyibilikisa ubungakanani obufanelekileyo be-USP Adenine RS emanzini ashushu, epholileyo, kwaye uhlambulule ubuninzi ngamanzi ukuze ufumane isisombululo esinomlinganiselo owaziwayo we-0.19 mg / mL.
Izisombululo eziqhelekileyo: I-Pipet ye-5-mL iinxalenye ze-Standard stock solution kwii-flasks ezintathu ze-100-mL ze-volumetric, kwaye i-dilute nge-0.10 N hydrochloric acid, i-0.010 N i-sodium hydroxide, kunye ne-pH 7.0 i-phosphate buffer, ngokulandelanayo, ukuya kwivolumu.
Isampuli yesisombululo sesitokhwe: Nciphisa ubungakanani obufanelekileyo be-Adenine emanzini ashushu, epholile, kwaye uhlambulule ngokomlinganiselo ngamanzi ukuze ufumane isisombululo esinoxinzelelo olwaziwayo lwe-0.19 mg / mL.
Isampuli yesisombululo sesitokhwe: Nciphisa ubungakanani obufanelekileyo be-Adenine emanzini ashushu, epholile, kwaye uhlambulule ngokomlinganiselo ngamanzi ukuze ufumane isisombululo esinoxinzelelo olwaziwayo lwe-0.19 mg / mL.
Izisombululo zesampuli: I-Pipet 5-mL iinxalenye zeSampuli yesisombululo sesitokhwe kwiiflaski ezintathu ze-100-mL zevolumetric, kwaye zixutywe nge-0.10 N hydrochloric acid, 0.010 N sodium hydroxide, kunye ne-pH 7.0 i-phosphate buffer, ngokulandelanayo, ukuya kwivolumu.
Iimeko zeSpectrometric
(Jonga iSpectrophotometry kunye nokuSasaza ukukhanya <851>.)
Indlela: UV-Vis
Uluhlu lwamaza: 220–320 nm
Iseli: 1cm
Akhonto: Amanzi
Uhlalutyo
Iisampulu: Izisombululo ezisemgangathweni kunye nezisombululo zeSampuli
Iinqobo zokwamkelwa: Ii-absorptivities ezihambelanayo, ezibalwe kwisiseko esomileyo, kwi-wavelengths ye-absorpension ephezulu, kwipere nganye yezisombululo ezihambelanayo azihlukanga ngaphezu kwe-2.0%.
IIMVAVANYO EZITHILE
I-LASSON DRYING <731>: Yomisa isampuli kwi-110 ° nge-4 h: ilahlekelwa yi-NMT 1.0% yobunzima bayo.
I-NITROGEN CONTENT, Indlela II 〈461〉: 50.2% -53.4%, ibalwa kwisiseko esomileyo
IIMFUNO EZONGEZELELWEYO
UKUPAKISHWA NOKUGCINWA: Gcina kwizikhongozeli ezivalwe kakuhle.
IMIGANGATHO YE-USP REFERENCE <11>
USP Adenine RS