Tam sim no, tus nqi ntawm sodium sulfite ntawm lub khw feem ntau yog li ntawm 2,000 txog 5,000 yuan ib tuj. Tus nqi tshwj xeeb tuaj yeem hloov pauv nyob ntawm qhov purity, ntim specifications, tus neeg muag khoom, thiab kev lag luam thiab kev thov. Piv txwv li, kev lag luam -qib sodium sulfite yog pheej yig dua, nyob ib ncig ntawm 2,000-3,500 yuan ib tuj, thaum zaub mov-qib los yog high-purity sodium sulfite, vim yog xav tau ntau dua rau qhov chaw tsim khoom thiab kev tswj kom zoo, tuaj yeem raug nqi 4,000-5,000 yuan ib tuj lossis txawm tias ntau dua.
Los ntawm txoj kev xav, sodium sulfite (Na₂SO₃) yog ib qho inorganic compound tsim los ntawm combustion ntawm sulfur los tsim sulfur dioxide, uas yog ces reacted nrog sodium hydroxide tov. Nws yog alkaline nyob rau hauv aqueous tov thiab muaj zog txo cov khoom, zoo tiv thaiv cov zaub mov oxidation thiab spoilage, thiab ncua lub neej txee. Yog li ntawd, nws yog dav siv nyob rau hauv kev lag luam khoom noj khoom haus raws li ib tug preservative thiab bleaching neeg sawv cev. Tsis tas li ntawd, sodium sulfite kuj tau siv dav hauv cov ntawv, textile, thiab dej kho kev lag luam vim nws txo qis thiab tshuaj dawb.
Hais txog kev siv, sodium sulfite feem ntau yog siv rau hauv kev lag luam khoom noj rau khaws cia cawv, txiv hmab txiv ntoo qhuav, thiab txiv hmab txiv ntoo candied; nyob rau hauv daim ntawv kev lag luam, nws yog siv los ua ib feem ntawm kev ua noj ua haus cawv los pab tshem tawm lignin; thiab hauv kev lag luam textile, nws yog siv rau bleaching fabrics. Cov kev lag luam sib txawv muaj qhov sib txawv ntawm cov kev xav tau zoo rau sodium sulfite, cuam tshuam ncaj qha rau cov nqi khoom.
Hais txog cov qauv kev lag luam, lub xeev muaj cov kev cai nruj heev ntawm kev tsim thiab siv sodium sulfite, xws li GB/T 6009-2014 "Industrial Anhydrous Sodium Sulfite" thiab GB 1886.23-2016 "National Food Safety Standard - Food Additives - Sodium Sulfite productivity," thiab ua tau zoo. Cov neeg muag khoom yuav tsum xav txog kev ua raws li cov qauv no thiab kev tswj hwm tus nqi thaum lub sijhawm tsim khoom thaum teeb tsa tus nqi.
Kev ua lag luam thiab kev xav tau kuj yog qhov tseem ceeb cuam tshuam rau tus nqi. Thaum xav tau ntau tshaj qhov khoom, tus nqi yuav nce; conversely, lawv yuav poob. Yog li ntawd, kev soj ntsuam kev lag luam kev lag luam thiab xaiv lub sijhawm khoom tsim nyog yog qhov tseem ceeb rau kev tswj hwm tus nqi.
