🌐EnglishEnglishBahasa IndonesiaDeutschEspañolFrançaisNederlandsPortuguêsTürkçeРусскийالعربيةفارسیहिन्दी中文日本語EntityQ908924· pop 20· linked from 29 articlescontact processcontact process is a method to prepare sulphuric acid / oil of vitriol in industrial cases.Available in 20 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsالعربيةहिन्दीBahasa IndonesiaConnectionswaterEntityoxygenEntityCategoriesCatalysisChemical processesSulfurVanadium