Peb txoj kev loj hlob nyob ntawm cov khoom zoo tshaj plaws, cov txuj ci zoo thiab cov thev naus laus zis ntau zaus rau USP Food Industrial Grade 64-19-7 99.5 99.8 Nqe Glacial Acetic Acid, Tus nqi sib tw nrog kev pabcuam zoo thiab kev txaus siab ua rau peb tau txais ntau tus neeg siv khoom. Peb xav ua haujlwm nrog koj thiab nrhiav kev txhim kho sib xws.
Peb txoj kev loj hlob nyob ntawm cov khoom zoo tshaj plaws, cov txuj ci zoo thiab cov thev naus laus zis uas tau txhim kho tas li, Nrog lub zog muaj zog thiab cov khoom siv tsim khoom siab heev, thiab cov neeg SMS ua haujlwm zoo, tsim nyog, mob siab rau lub siab ntawm kev lag luam. Cov lag luam tau ua tus thawj coj los ntawm ISO 9001: 2008 daim ntawv pov thawj thoob ntiaj teb kev tswj hwm zoo, CE daim ntawv pov thawj EU; CCC.SGS.CQC lwm yam ntawv pov thawj khoom cuam tshuam. Peb tos ntsoov yuav rov qhib peb lub tuam txhab kev sib txuas.














CH3cooh thiab Acetic Acid Standardization: Ntsuas kom raug li 0.6 g ntawm thawj tus qauv potassium hydrogen phthalate, ua ntej ziab kom ruaj khov ntawm 105 ° C. Ntxiv 50 mL ntawm cov dej tshiab thiab txias thiab co kom yaj ntau li ntau tau. Ntxiv 2 tee ntawm phenolphthalein indicator solution thiab titrate nrog titrant. Nyob ze ntawm qhov kawg, xyuas kom meej tias potassium hydrogen phthalate yaj tag nrho. Titrate kom txog thaum muaj xim liab tshwm sim. Txhua 1 mL ntawm sodium hydroxide titrant (1 mol / L) yog sib npaug rau 204.2 mg ntawm potassium hydrogen phthalate. Xam qhov concentration ntawm titrant raws li qhov ntim noj thiab qhov hnyav ntawm potassium hydrogen phthalate siv. CH3cooh thiab Acetic Acid.
Kev Khaws Cia CH3cooh thiab Acetic Acid: Khaws cia rau hauv lub raj mis yas polyethylene uas kaw nrog ob lub qhov hauv lub hau, txhua lub nrog lub raj iav ntxig. Ib lub raj txuas nrog lub raj soda-lime, thiab lwm lub siv rau kev rho tawm cov titrant.