Sodium acetate

Tshuaj Npe: Sodium acetate

Molecular Chiv: C₂H₃Nao₂ ; C₂H₃Nao₂3H₂O

Molecular hnyav: Anhydrous: 82.03; Trihydrate: 136.08

Cas: Anhydrous: 127-09-3; Trihydrate: 6131-90-4

Cwj pwm: Anhydrous: Nws yog dawb crystalline hmoov los yog thaiv. Nws tsis muaj ntxhiab, qab qab me ntsis ntawm vingary. Tus txheeb ze ceev yog 1.528. Melting point yog 324 ℃. Muaj peev xwm ntawm kev nqus dej noo yog muaj zog. 1g qauv yuav tuaj yeem yaj nyob rau hauv 2ml dej.

Trihydrate: Nws yog xim tsis muaj kob pob tshab siv lead ua lossis dawb crystalline hmoov. Tus txheeb ze ceev yog 1.45. Nyob rau hauv cov huab cua sov thiab qhuav, nws yuav yooj yim ntub. 1g qauv yuav yaj tau txog 0.8ml dej lossis 19ml ethanol.

Hu rau tam sim no down thauj mus rau pdf

Khoom Qhia Qhia

Kev siv: Nws yog siv los ua buffering tus neeg sawv cev, seasoning reagent, Ph Regulator Ph PH, tsw tus neeg sawv cev, thiab lwm yam.

Pob: Nws tau ntim nrog cov polyethylene lub hnab raws li cov txheej sab hauv, thiab ib lub hnab ntim khoom yas woven raws li txheej. Qhov nyhav ntawm txhua lub hnab yog 25kg.

Cia thiab thauj: Nws yuav tsum tau muab cia rau hauv cov tsev muag khoom qhuav thiab ua kom sov thiab noo noo thaum thauj khoom, tsis muaj kev puas tsuaj rau kom tsis txhob muaj kev puas tsuaj. Tsis tas li ntawd, nws yuav tsum muab khaws cia cais los ntawm cov tshuaj lom.

Txuj Ci Zoo: (GB 30603-2014, FCC VII)

Kev qhia tshwj xeeb		GB 30603-2014	FCC VII
Cov ntsiab lus (ntawm kev ziab), w /% ≥		98.5	99.0-101.0 Nws
Acidity thiab Alkalinity		Xa Daim Xeem	—
Coj (li PB), mg / kg ≤		2	2
Alkalinity, w /% ≤	Yam tsis muaj dab tsi	—	0.2
Alkalinity, w /% ≤	Taug kev	—	0.05
Poob rau ziab, w /%	Anhydrus ≤	2.0	1.0
Poob rau ziab, w /%	Taug kev	36.0-42.0 Nws	36.04-41.0
Poov tshuaj compound		Xa Daim Xeem	Xa Daim Xeem