Sodium metabisulfite/CAS: 7681-57-4
Kev Piav Qhia Luv:
Lub Npe Khoom: Sodium metabisulfite
CAS: 7681-57-4
MF:H2O5S2.2Na
MW:192.12
QAUV:
cov lus qhia tshwj xeeb
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| Qhov Kub Yaj | >300 ° C (lit.) |
| Qhov Ceev | 1.48 |
| Qhov Ceev Ntau | 1000-1200kg/m3 |
| Refractive Index | 1.474 |
| Cov Cai Khaws Cia | Khaws cia ntawm +5°C txog +30°C. |
| Kev yaj tau | 540g/l (20°C) |
| Daim Ntawv | Hmoov/Khoom |
| Xim | Dawb mus rau me ntsis daj |
| Tus nqi pH | 3.5-5 (50g/l, H2O, 20℃) |
| Kev yaj dej | 540 g/L (20 ºC) |
| PH ntau ntawm cov xim qhia txog kua qaub-raws li hloov xim | 4.5 ntawm 50 g/l ntawm 20 °C |
Sodium metabisulfite yog ib hom hmoov dawb los yog daj crystalline los yog crystal me me uas muaj ntxhiab SO2 heev. Nws cov kua dej yog acidic thiab tso SO2 tawm thaum kov cov acids muaj zog, ua rau muaj cov ntsev sib xws. Yog tias tso rau hauv huab cua ntev, nws oxidizes mus rau Na2S2O6, yog li cov khoom no tsis tuaj yeem khaws cia ntev.
Kev Siv
Siv ua cov tshuaj preservatives, bleaching agents, thiab loosening agents hauv kev ua zaub mov. Sodium metabisulfite siv rau hauv kev lag luam xws li kev luam ntawv thiab dyeing, organic synthesis, luam ntawv, tawv ua, tshuaj, thiab lwm yam; Sodium metabisulfite siv rau hauv kev lag luam tshuaj lom neeg thiab tshuaj rau kev tsim cov hmoov pov hwm, sulfamethoxazole metamaterial, caprolactam, nrog rau kev ntxuav chloroform, phenylpropanoid sulfone, thiab benzaldehyde. Siv ua cov khoom xyaw fixative hauv kev lag luam photography. Kev lag luam txuj lom siv los tsim vanillin. Siv ua cov tshuaj preservative hauv kev lag luam brewing, roj hmab coagulant, thiab dechlorination agent rau cov ntaub paj rwb bleached. Organic intermediates, dyes, tawv siv ua cov neeg sawv cev txo qis, siv hauv kev lag luam electroplating, kev kho dej khib nyiab hauv cov teb roj, thiab siv ua cov neeg sawv cev ua cov ntxhia hauv cov mines.
Ntim thiab Xa Khoom
25KG / Nruas los yog raws li cov neeg siv khoom xav tau.
Yog cov khoom siv dav dav thiab tuaj yeem xa los ntawm dej hiav txwv thiab huab cua
Khaws cia thiab khaws cia
Lub neej txee: 24 lub hlis txij li hnub tsim khoom hauv cov ntim khoom tsis tau qhib khaws cia rau hauv qhov chaw txias thiab qhuav kom tsis txhob raug tshav ntuj ncaj qha, dej.
Lub tsev rau khoom muaj cua nkag, ziab kom qhuav kub tsawg, Sib cais ntawm cov tshuaj oxidants, cov kua qaub.
