I-Ammonium Sulfate CAS 7783-20-2 Umxholo 99.0~100.5%

(NH4)2SO4 132.14
I-Ammonium Sulfate [7783-20-2].
INGCACISO
I-Ammonium Sulfate iqulethe i-NLT 99.0% kunye ne-NMT 100.5% ye (NH4)2SO4.
UKUCHAZA
• A. Iimvavanyo zokuchonga Jikelele, i-Ammonium <191>: Isisombululo (1 kuma-20) siyahlangabezana neemfuno.
• B. Iimvavanyo zokuchonga Jikelele, iSulfate <191>: Isisombululo (1 kuma-20) sihlangabezana neemfuno.
UVAVANYO
• Inkqubo
Isampuli: 2.5 g ye-Ammonium Sulfate
Inkqubo yeTitrimetric
(Jonga i-Titrimetry <541>.)
Imowudi: Titration Residual
I-Titrant: I-1 N ye-sodium hydroxide VS
I-titrant yangasemva: 1 N sulfuric acid VS
Ukubonwa kwendawo yokugqibela: Umbala wemibala
Akunanto: 50.0 mL ye-1 N sodium hydroxide VS, ilinganiswe ngokuchanekileyo
Uhlalutyo: Yongeza iSampulu kwi-500-mL ye-conical flask kwaye unyibilike kwi-50 mL yamanzi.Yongeza i-50.0 mL ye-1 N i-sodium hydroxide VS, faka i-funnel yokucoca ngokukhululekile entanyeni yeflask, kwaye ubilise de i-ammonia ikhutshwe (malunga ne-10-15 min), njengoko kunqunywe ngephepha le-litmus.Cool, yongeza i-0.15 mL ye-thymol blue TS, kunye ne-titrate i-sodium hydroxide engaphezulu kwe-1 N sulfuric acid VS.Yenza isigqibo esingenanto.
Bala ipesenti ye-ammonium sulfate [(NH4)2SO4] kwiSampuli ethathiweyo:
Isiphumo = [(BV) × N × F ×100]/W
B = 1 N sulfuric acid VS esetyenziswe yi-Gank (mL)
V = 1 N sulfuric acid VS edliwe yiSampule (mL)
N = ukuqheleka okwenyani kwe-Back titrant (mEq/mL)
F = i-equivalency factor, i-66.07 mg / mEq
W = ubunzima beSampuli (mg)
Indlela yokwamkela: 99.0% -100.5%
UBUNGCOLA
• Intsalela kwi-Ignition <281>
Isampulu: 20 g
Indlela yokwamkelwa: NMT 0.005%
• Umda woMba onganyibilikiyo
Isampulu: 20 g
Uhlalutyo: Dlulisa iSampulu kwibhekile egqunyiweyo, kwaye unyibilike kwi-200 mL yamanzi.Ukufudumala ukubilisa, kunye nokufudumala kwibhafu yomphunga kwi-1 h.Hlunga isisombululo esishushu nge-tared sintered-glass crucible of medium porosity (10-15 µm).Geza i-beaker kunye nesihlungi ngamanzi atshisayo, yomisa i-crucible kwi-105, ipholile kwi-desiccator, kwaye ulinganise.
Indlela yolwamkelo: I-NMT 1 mg yomba onganyibilikiyo ifunyenwe (0.005%).
• Umda wePhosphate
Isisombululo se-phosphate esiqhelekileyo, i-Phosphate reagent A, kunye ne-Phosphate reagent B: Lungiselela njengoko kuqondiswe kwi-Phosphate kwi-Reagents phantsi kwe-Reagents, i-Indicators, kunye ne-Solution-General Tests for Reagents.
Isampulu: 4.0 g
Ukulawula: 0.2 mL yesisombululo se-phosphate esemgangathweni
Uhlalutyo
[Qaphela-Uvavanyo lweSampuli kunye noLawulo lwenziwa ngokukhethwayo kwiityhubhu ezihambelana nombala-uthelekiso.]
Chitha iSampuli kwi-25 mL ye-0.5 N sulfuric acid, yongeza i-1 mL nganye ye-Phosphate reagent A kunye ne-Phosphate reagent B, kwaye uvumele ukuma kwindawo yokushisa i-2 h.Qhubeka noLawulo usebenzisa amanani afanayo ee-reagents ezifanayo njengoko kuvavanyo lweSampuli.
Indlela yolwamkelo: Nawuphi na umbala obhulowu ofunyenwe kwiSampulu akufuneki ugqithe kulawo oveliswe kuLawulo (NMT 5 ppm).
• I-Chloride kunye ne-Sulfate, i-Chloride <221>
Isisombululo se-chloride esiqhelekileyo: Ukutshintshela i-165 mg ye-sodium chloride kwi-100-mL ye-volumetric flask.Dissolve kwaye uhlambulule ngamanzi ukuya kwivolumu.Dlulisa i-10.0 mL kwi-1000-mL ye-volumetric flask, kwaye uhlambulule ngamanzi ukuya kumthamo ukufumana isisombululo esinoxinzelelo lwe-10 µg/mL yekloridi.
Iinqobo zokwamkela: Isahlulo se-2-g asibonisi kloridi ngaphezulu kokungqinelana ne-1.0 mL yesisombululo sekloridi esemgangathweni (NMT 5 ppm).
• Umda weNitrate
Isisombululo se-nitrate esisemgangathweni kunye nesisombululo se-Brucine sulfate: Lungiselela njengoko kuqondiswe kwi-Nitrate kwi-Reagents phantsi kwe-Reagents, i-Indicators, kunye ne-Solution-General Tests for Reagents.
Isampuli yesisombululo: Nciba i-1.0 g kwi-3 mL yamanzi ngokufudumeza kwibhafu yamanzi abilayo, kwaye wongeze isisombululo seBrucine sulfate ukwenza i-50 mL.
Isisombululo sokulawula: Kwi-1.0 mL yesisombululo se-nitrate esemgangathweni yongeza i-1.0 g ye-ammonium nitrate, uze ungeze isisombululo se-Brucine sulfate ukwenza i-50 mL.
Akunanto: 50 mL yesisombululo seBrucine sulfate
Uhlalutyo: Fudumeza isisombululo seSampuli, isisombululo sokulawula, kunye ne-Blank kwindawo yokuhlambela amanzi abilayo kwi-15 min kunye ne-periodic i-swirling epholileyo, emva koko upholise ngokukhawuleza kwindawo yokuhlamba i-ice ukuya kwiqondo lokushisa.Lungisa i-spectrophotometer efanelekileyo kunye ne-Blank kwi-zero absorbance kwi-410 nm.Misela ukutsalwa kweSampuli isisombululo, qaphela umphumo, kwaye ulungise isixhobo kunye nesisombululo seSampuli kwi-zero absorbance.Qinisekisa ukufunxwa kwesisombululo soLawulo.
Indlela yolwamkelo: Ufundo olufunxayo lweSampuli yesisombululo aludluli olo lwesisombululo soLawulo (NMT 10 ppm).
• Intsimbi <241>
Isisombululo sesampuli: Chitha i-2.0 g kwi-40 mL yamanzi, kwaye ungeze i-2 mL ye-hydrochloric acid.
Indlela yolwamkelo: NMT 5 ppm
IIMVAVANYO EZITHILE
• Iimvavanyo zoBalo lweMicrobial <61> kunye noVavanyo lweeMicroorganisms ezichaziweyo <62>: Itotali ye-aerobic microbial count ayidluli i-1000 cfu/g, kwaye inani elidityanisiweyo lokungunda kunye ne-yeast count ayidluli kwi-10 cfu/g.
• pH <791>: 5.0-6.0 kwisisombululo (1 kwi-20)
IIMFUNO EZONGEZELELWEYO
• Ukupakishwa kunye noGcino: Londoloza kwizikhongozeli ezivalwe kakuhle.Akukho mfuneko yokugcina ichaziwe.