Sodium thiocyanate CAS 540-72-7
Sodium thiocyanate yog ib qho siv lead ua tsis muaj xim uas muaj 2 feem ntawm cov dej siv lead ua. Thaum 30.4 ℃, nws poob nws cov dej siv lead ua thiab ua rau anhydrous sodium thiocyanate, uas yaj tau hauv dej thiab ethanol. Nws yog tsim los ntawm azeotropic distillation ntawm sodium cyanide thiab sulfur slurry hauv kev lag luam, thiab yog ib qho ntawm cov khoom siv purification ntawm coke qhov cub roj hauv cov nroj tsuag coking. Nws yog tsim los ntawm cov kua pov tseg ntawm anthraquinone disulfonic acid txoj kev.
| Khoom | Cov Lus Qhia Tshwj Xeeb |
| PH | 6-8 (100g/l, H2O, 20℃) |
| Qhov Ceev | 1.295 g/mL ntawm 20 °C |
| Qhov kub yaj | 287 °C (kub txo) (lit.) |
| Lub zog ua pa | <1 hPa (20 °C) |
| Cov xwm txheej cia khoom | Khaws cia ntawm +5°C txog +30°C. |
| pKa | 9.20 ± 0.60 (Kwv yees) |
Sodium thiocyanate siv tau ua ib yam tshuaj reagent analytical, xws li kev txiav txim siab ntawm niobium hauv hlau thiab rau kev tsim cov organic thiocyanates rau nyiaj, tooj liab, thiab hlau. Sodium thiocyanate kuj tseem siv tau ua ib yam tshuaj rau kev kos cov polyacrylonitrile fibers, ib yam tshuaj ua xim zaj duab xis, qee cov tshuaj tua cov nroj tsuag, thiab tshuaj tua kab hauv tshav dav hlau.
Feem ntau ntim rau hauv 25kg / nruas, thiab kuj tuaj yeem ua pob khoom raws li koj xav tau.
Sodium thiocyanate CAS 540-72-7
Sodium thiocyanate CAS 540-72-7
