Sodium Hydrosulfite 90%, Npaj Rau Kev Xa Khoom ~

Daim ntawv thov:
1. Kev siv cov sodium hydrosulfite yog dav heev, feem ntau suav nrog txo dyeing, txo kev tu, luam ntawv thiab decolorization nyob rau hauv kev lag luam textile, nrog rau bleaching ntawm txhob lo lo ntxhuav, ntaub plaub, nylon thiab lwm yam ntaub. Txij li thaum sodium hydrosulfite tsis muaj cov hlau hnyav, cov xim ntawm cov ntaub bleached yog ci heev thiab tsis yooj yim rau ploj.

2. Sodium hydrosulfite kuj tseem siv tau rau cov zaub mov bleaching, xws li gelatin, sucrose, candied txiv hmab txiv ntoo, thiab lwm yam, nrog rau xab npum, tsiaj (nroog) roj, xyoob, porcelain av nplaum bleaching.

3. Nyob rau hauv lub tshav pob ntawm cov organic synthesis, sodium hydrosulfite yog siv los ua ib tug txo tus neeg saib xyuas los yog bleaching neeg sawv cev nyob rau hauv zus tau tej cov dyes thiab tshuaj, tshwj xeeb tshaj yog raws li ib tug bleaching neeg sawv cev rau ntoo pulp papermaking.

4. Sodium hydrosulfite tuaj yeem txo ntau cov hlau hnyav xws li Pb2+, Bi3+, thiab lwm yam rau cov hlau hauv kev kho dej thiab tswj kev ua qias tuaj, thiab tseem tuaj yeem siv los khaws cov zaub mov thiab txiv hmab txiv ntoo.

Kev phom sij
Flammable:Sodium dithionite yog thawj-chav flammable yam khoom thaum ntub dej raws li lub teb chaws tus qauv. Nws yuav hnov ​​​​mob hnyav thaum nws los rau hauv dej, tsim cov pa taws xws li hydrogen sulfide thiab sulfur dioxide, thiab tso tawm cov cua kub ntau. Qhov sib npaug ntawm cov tshuaj tiv thaiv yog: 2Na2S2O4 + 2H2O + O2 = 4NaHSO3, thiab cov khoom lag luam txuas ntxiv ua rau tsim cov hydrogen sulfide thiab sulfur dioxide. Sodium dithionite muaj qhov nruab nrab valence xeev ntawm leej faj, thiab nws cov khoom siv tshuaj tsis ruaj khov. Nws qhia tau hais tias muaj zog txo cov khoom. Thaum nws ntsib muaj zog oxidizing acids, xws li sulfuric acid, perchloric acid, nitric acid, phosphoric acid thiab lwm yam acids muaj zog, ob yuav raug ib tug redox cov tshuaj tiv thaiv, thiab cov tshuaj tiv thaiv yog tsausmuag, tso ib tug loj npaum li cas ntawm tshav kub thiab tshuaj lom. Nws cov lus sib npaug yog: 2Na2S2O4 + 4HCl = 2H2S2O4 + 4NaCl

Spontaneous combustion:Sodium dithionite muaj qhov tshwm sim tshwm sim ntawm 250 ℃. Vim nws qhov taw tes qis qis, nws yog thawj-chav flammable khoom (qhov taw tes ignition feem ntau qis dua 300 ℃, thiab lub flash point ntawm qis melting point yog qis dua 100 ℃). Nws yog qhov yooj yim heev rau hlawv thaum raug tshav kub, hluav taws kub, kev sib txhuam thiab kev cuam tshuam. Lub combustion ceev yog ceev thiab qhov hluav taws kub phom sij yog siab. Cov pa roj hydrogen sulfide uas tsim thaum lub sij hawm combustion txheej txheem kuj yuav ua rau ib tug loj combustion cheeb tsam, ua rau nws muaj teeb meem hluav taws.

Kev tawg:Sodium dithionite yog lub teeb daj hmoov hmoov. Cov hmoov hmoov yog ib qho yooj yim los tsim ib qho kev sib tov sib xyaw hauv huab cua. Plua plav tawg tshwm sim thaum ntsib qhov hluav taws kub. Kev sib xyaw ntawm sodium dithionite thiab oxidants feem ntau, xws li chlorates, nitrates, perchlorates, lossis permanganates, yog tawg. Txawm tias nyob rau hauv lub xub ntiag ntawm dej, nws tawg tom qab ib tug me ntsis kev sib txhuam los yog kev cuam tshuam, tshwj xeeb tshaj yog tom qab thermal decomposition, cov nplaim taws generated tom qab cov tshuaj tiv thaiv mus txog qhov tawg txwv, ces nws explosion txaus ntshai ntau dua.