Monobasic stable type peroxyacetic acid disinfection solution and preparation method of monobasic stable type peroxyacetic acid disinfection solution
A technology of peracetic acid and disinfectant, applied in the directions of botanical equipment and methods, disinfectants, chemicals used for biological control, etc., can solve the problems of inconvenience, low stability, long reaction time, etc. The effect of slow, proper proportion and stable system
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[0017] The present invention is a preparation method of monobasic stable peracetic acid disinfectant, which includes the following steps:
[0018] (1) Add glacial acetic acid to the stirring device according to the formula, add concentrated sulfuric acid, hydrogen peroxide, and compound stabilizer in sequence during continuous stirring, stir evenly, stop stirring, continue to stand. Preferably, the formula is calculated by mass percentage and is composed of 30-60% hydrogen peroxide, 40-60% glacial acetic acid, 1-3% concentrated sulfuric acid, and 0.2-2.5% compound stabilizer. Preferably, the concentration of hydrogen peroxide added is 40-60 wt%, the concentration of glacial acetic acid is 95 wt% or more, and the concentration of concentrated sulfuric acid is 95 wt% or more. Preferably, the compound stabilizer is composed of hydroxy ethylidene diphosphonic acid, disodium EDTA, 8-hydroxyquinoline and sodium pyrophosphate. The use of a suitable stabilizer combination is also benefic...
Example
[0023] Example 1 and Comparative Example 1
[0024] Hydrogen peroxide (50%): 500g
[0025] Glacial acetic acid (99%): 500g
[0026] Concentrated sulfuric acid (98%): 20g
[0027] Compound stabilizer: 20g, composed of hydroxyethylidene diphosphonic acid, disodium EDTA, 8-hydroxyquinoline and sodium pyrophosphate, with a weight ratio of 1:0.5:0.5:0.5.
[0028] At room temperature, add glacial acetic acid to the stirring device, start stirring, add sulfuric acid, stir for 5 minutes, then add hydrogen peroxide, add compound stabilizer after stirring for 10 minutes, and stir for 30 minutes; stop stirring and continue to stand at constant temperature for 3 hours ; Then continue to stand the reaction for 8 hours, determine the content of hydrogen peroxide and peracetic acid in the solution, and divide this solution into two equal parts, labeled as Comparative Example 1, Example 1, and add 10% of the solution in Example 1 to Ionized water (104g deionized water in this example); after standing...
Example
[0031] Example 2 and Example 3
[0032] Hydrogen peroxide (50%): 300g
[0033] Glacial acetic acid (99%): 510g
[0034] Concentrated sulfuric acid (98%): 20g
[0035] Compound stabilizer: 20g, composed of hydroxyethylidene diphosphonic acid, disodium EDTA, 8-hydroxyquinoline and sodium pyrophosphate, with a weight ratio of 0.8:0.8:0.5:0.3.
[0036] The specific preparation steps are:
[0037] (1) Add glacial acetic acid to the stirring device, stir at a certain constant temperature, add concentrated sulfuric acid, stir for 6 minutes, then add hydrogen peroxide, stir for 12 minutes, add the compound stabilizer, stir for 35 minutes, stop stirring, Continue to stand at a constant temperature for 3 hours.
[0038] (2) Continue to stand for 8 hours, add 120 g of deionized water, and stir evenly.
[0039] (3) Stop stirring and let it stand overnight to complete the preparation.
[0040] Under the same formula, using the same preparation process as described above, but setting the constant temper...
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