Method for removing trace sulfur dioxide in ultrapure sulfuric acid
The invention provides a method for removing trace sulfur dioxide in ultrapure sulfuric acid, and relates to the technical field of chemical preparation. A method for removing trace sulfur dioxide in ultrapure sulfuric acid comprises the following steps: accurately weighing 1000g of ultrapure concen...
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Format | Patent |
Language | Chinese English |
Published |
22.04.2022
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Abstract | The invention provides a method for removing trace sulfur dioxide in ultrapure sulfuric acid, and relates to the technical field of chemical preparation. A method for removing trace sulfur dioxide in ultrapure sulfuric acid comprises the following steps: accurately weighing 1000g of ultrapure concentrated sulfuric acid, adding the ultrapure concentrated sulfuric acid into 200g of 31% ultrapure hydrogen peroxide solution, accurately calibrating the concentration of the ultrapure concentrated sulfuric acid to be about 5%, measuring the content of sulfur dioxide in an ultrapure sulfuric acid tank, and calculating the content of sulfur dioxide in the ultrapure sulfuric acid tank according to a molar equivalent reaction principle in chemistry. The required hydrogen peroxide molar weight and the required 5% hydrogen peroxide sulfuric acid solution amount are strictly calculated, the hydrogen peroxide sulfuric acid solution is slowly added into a sulfuric acid tank, the temperature does not exceed 50 DEG C, and most |
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AbstractList | The invention provides a method for removing trace sulfur dioxide in ultrapure sulfuric acid, and relates to the technical field of chemical preparation. A method for removing trace sulfur dioxide in ultrapure sulfuric acid comprises the following steps: accurately weighing 1000g of ultrapure concentrated sulfuric acid, adding the ultrapure concentrated sulfuric acid into 200g of 31% ultrapure hydrogen peroxide solution, accurately calibrating the concentration of the ultrapure concentrated sulfuric acid to be about 5%, measuring the content of sulfur dioxide in an ultrapure sulfuric acid tank, and calculating the content of sulfur dioxide in the ultrapure sulfuric acid tank according to a molar equivalent reaction principle in chemistry. The required hydrogen peroxide molar weight and the required 5% hydrogen peroxide sulfuric acid solution amount are strictly calculated, the hydrogen peroxide sulfuric acid solution is slowly added into a sulfuric acid tank, the temperature does not exceed 50 DEG C, and most |
Author | CAO CHUANXING |
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DocumentTitleAlternate | 超纯硫酸中微量二氧化硫的去除方法 |
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Snippet | The invention provides a method for removing trace sulfur dioxide in ultrapure sulfuric acid, and relates to the technical field of chemical preparation. A... |
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Title | Method for removing trace sulfur dioxide in ultrapure sulfuric acid |
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