CN113367152A - Low-temperature peroxyacetic acid disinfectant and preparation method thereof - Google Patents
Low-temperature peroxyacetic acid disinfectant and preparation method thereof Download PDFInfo
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- CN113367152A CN113367152A CN202110600965.4A CN202110600965A CN113367152A CN 113367152 A CN113367152 A CN 113367152A CN 202110600965 A CN202110600965 A CN 202110600965A CN 113367152 A CN113367152 A CN 113367152A
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Abstract
The invention discloses a low-temperature peroxyacetic acid disinfectant and a preparation method thereof, belonging to the technical field of disinfection. The peroxyacetic acid disinfectant comprises the following components in percentage by weight: 0.1-2% of peroxyacetic acid, 1-10% of hydrogen peroxide, 10-30% of antifreezing agent, 0.01-1% of stabilizing agent, 0.1-1% of corrosion inhibitor and the balance of water. According to the method, peracetic acid, hydrogen peroxide, a stabilizer, an antifreezing agent and a corrosion inhibitor are sequentially added into water, and the peracetic acid disinfectant can be obtained by uniformly stirring. The peroxyacetic acid disinfectant does not freeze under the condition of-23 ℃, can achieve a disinfection effect in a short time, has good stability, low corrosivity and convenient operation, does not need to be cleaned after acting on the surface of an object, and has the advantages of safety, environmental protection, high efficiency, no toxicity, no odor and the like.
Description
Technical Field
The invention relates to the technical field of disinfection, in particular to a low-temperature peroxyacetic acid disinfectant and a preparation method thereof.
Background
2019 the new coronavirus (SARS-CoV-2) is a virus containing lipid membrane, and belongs to the same lipophilic virus as hepatitis B virus, influenza virus, etc. Symptoms of the virus infection are fever, hypodynamia, dry cough and gradual dyspnea, and severe patients show acute respiratory distress syndrome, septic shock, metabolic acidosis and blood coagulation dysfunction which are difficult to correct.
Many viruses can be stored in a refrigerated environment at-4 ℃ for one month, under freezing conditions for years, and can stably survive under ultra-low temperature and freeze-drying conditions. In the process, although the virus cannot be replicated, the biological structure of the virus can be guaranteed not to be damaged, and once the temperature is restored to normal temperature, the virus still can be spread.
Based on previous knowledge of coronaviruses, all classical disinfection methods are able to kill coronaviruses. However, the disinfection effect of most disinfection solutions is directly related to the temperature, generally speaking, under the condition of low temperature, the disinfection effect of the normal temperature disinfection solution is obviously weakened, and when the temperature is lower than 16 ℃, the common disinfection solution loses the effect on most pathogens, even cannot play the disinfection effect at all, and completely fails. The frozen food is stored and sold under the condition of less than or equal to minus 18 ℃, when the outer surface of the package of the frozen food is sterilized by normal-temperature sterilizing liquid, the frozen food can be frozen and frozen quickly, the sterilizing effect is lost, the sterilizing requirement can not be met, and the frozen food is easy to remain, thereby polluting the outer package and even the food.
Peracetic acid (PAA) is a high-efficiency broad-spectrum chemical disinfectant, has the advantages of low use concentration, strong sterilization effect, short disinfection time, no toxicity of decomposed products and the like, and is a more ideal high-efficiency, environment-friendly and non-toxic disinfectant at present. But the peroxyacetic acid disinfectant can generate an icing phenomenon along with the reduction of the temperature, the disinfection effect is obviously weakened, and the use of the peroxyacetic acid disinfectant is greatly limited. Therefore, it is necessary to provide a peracetic acid disinfectant solution that can perform a disinfecting function at a low temperature.
Disclosure of Invention
The invention provides a low-temperature peroxyacetic acid disinfectant and a preparation method thereof, aiming at solving the problem that the existing peroxyacetic acid disinfectant cannot meet the disinfection requirement under the low-temperature condition.
In a first aspect, the low-temperature peroxyacetic acid disinfectant disclosed by the invention adopts the following technical scheme.
A low-temperature peroxyacetic acid disinfectant comprises the following components in percentage by weight:
0.1-2% of peroxyacetic acid;
1-10% of hydrogen peroxide;
10-30% of an antifreezing agent;
0.01 to 1 percent of stabilizer;
0.1 to 1 percent of corrosion inhibitor;
the balance being water.
By adopting the technical scheme, the disinfectant contains 5 components of peracetic acid, hydrogen peroxide, an antifreezing agent, a stabilizing agent and a corrosion inhibitor. Wherein, the peroxyacetic acid is an active ingredient and mainly plays a role in disinfection; the antifreezing agent is added to play a main antifreezing role, so that the disinfectant can still achieve the disinfection effect and can not freeze under the condition that the temperature is as low as-23 ℃; the stabilizer is added to play a stabilizing role, so that the disinfectant can be stored at normal temperature for more than 12 months, and the problem of unqualified disinfection effect caused by gradual reduction of peracetic acid in the use process is effectively solved; the corrosion inhibitor can effectively prevent a corrosion medium from entering the surface of the metal, has a corrosion inhibition effect, reduces or reduces the corrosion of the peracetic acid to the metal, and greatly improves the limitation caused by the corrosivity of the peracetic acid. Therefore, the disinfectant of the present application can maintain a good bactericidal effect at low temperature under the action of the above 5 components, and has stable components, long storage time and low corrosivity.
Optionally, the antifreeze agent is one or more of inorganic salt, low-carbon alcohol and polyhydric alcohol.
Optionally, the inorganic salt is sodium chloride, calcium chloride or magnesium chloride; the lower alcohol is methanol, ethanol, butanol or pentanol; the polyalcohol is ethylene glycol, propylene glycol or glycerol.
By adopting the technical scheme, the inorganic salt, the low-carbon alcohol or the polyol is selected as the antifreezing agent, so that the antifreezing effect of the disinfectant can be obviously improved, and the disinfectant can not be frozen at the temperature of-23 ℃.
Optionally, the stabilizer is one or two of a phosphine compound and a buffer system.
Optionally, the phosphine compound is phosphoric acid, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, diethylenetriamine pentamethylenephosphonic acid, ethylenediamine tetramethylene phosphonic acid or hydroxyethylidene diphosphonic acid; the buffer system is citric acid-disodium hydrogen phosphate buffer solution with the pH value of 3.0-5.0.
By adopting the technical scheme, the phosphine and/or buffer system is/are selected as the stabilizer, so that the stability of the peracetic acid in the solution can be effectively improved, and the use validity period of the disinfectant is prolonged.
Optionally, the corrosion inhibitor is one or more of amino carboxylate, hydroxyquinoline salt and a phosphorus-containing compound.
Optionally, the aminocarboxylate is sodium aminotriacetate, ethylenediaminetetraacetic acid, disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, or diethylenetriaminepentacarboxylate; the hydroxyquinoline salt is hydroxyquinoline, 8-hydroxyquinoline aluminum, 8-hydroxyquinoline copper or 8-hydroxyquinoline sulfate; the phosphorus-containing compound is phosphoric acid, pyrophosphoric acid, hexametaphosphoric acid, sodium pyrophosphate, ethylene diamine tetra methyl phosphoric acid, hydroxy toluene methylene diphosphonic acid, hydroxy ethylene diphosphonic acid, diethylene triamine pentamethylene phosphoric acid or dimethyl aminomethane diphosphonic acid.
By adopting the technical scheme, the corrosion inhibitor is prepared from the components, so that the corrosivity of the disinfectant can be effectively reduced, the corrosion degree of the surface of the disinfected object is reduced, and the application range of the disinfectant is expanded.
In a second aspect, the present application provides a method for preparing a low-temperature peroxyacetic acid disinfectant, which adopts the following technical scheme.
The preparation method of the low-temperature peroxyacetic acid disinfectant comprises the following steps:
s1, weighing specified amounts of peracetic acid, hydrogen peroxide, a stabilizer, an antifreezing agent, a corrosion inhibitor and water;
s2, mixing water and peroxyacetic acid, and stirring at 30-50rpm/min for 8-10 min;
s3, adding hydrogen peroxide into the solution obtained in the step S2, and stirring at 30-50rpm/min for 10-15 min;
s4, adding a stabilizer into the mixed solution obtained in the step S3, and stirring at 30-50rpm/min for 15-20 min;
s5, adding an antifreezing agent into the mixed solution obtained in the step S4, and stirring at 30-50rpm/min for 15-20 min;
s6, adding the corrosion inhibitor into the mixed liquid obtained in the step S5, and stirring at 30-50rpm/min for 8-10min to obtain the corrosion inhibitor.
By adopting the technical scheme, the production process of the peroxyacetic acid disinfectant is simple, safe to operate and suitable for large-scale industrial production.
The present invention obtains the following advantageous effects.
1. The peroxyacetic acid disinfectant can be in a colorless transparent liquid state at the temperature of-23 ℃, and does not precipitate or crystallize, so that a foundation is laid for the low-temperature sterilization effect of the peroxyacetic acid disinfectant;
2. the peroxyacetic acid disinfectant can still keep excellent sterilization effect at the temperature of-23 ℃, can effectively kill intestinal pathogenic bacteria and pyogenic cocci, can completely kill bacteria within 2min, and meets the requirements of cold chain transportation sterilization;
3. the peroxyacetic acid disinfectant has good stability, can be stored for more than 12 months at normal temperature, and has long use validity period;
4. the peroxyacetic acid disinfectant has low corrosivity, can kill harmful microorganisms on the surfaces of objects made of different materials, and has a wide application range;
5. the preparation method of the peroxyacetic acid disinfectant is simple, and the prepared peroxyacetic acid disinfectant is convenient to use and can be directly used without dilution.
Detailed Description
The present invention will be further described with reference to examples.
Example 1
A preparation method of a low-temperature peroxyacetic acid disinfectant comprises the following steps:
s1, weighing 0.1% of peroxyacetic acid, 10% of hydrogen peroxide, 0.01% of citric acid-disodium hydrogen phosphate buffer pair with pH of 3.0, 30% of ethylene glycol, 0.1% of hydroxyethylidene diphosphonic acid and water;
s2, mixing water and peroxyacetic acid, and stirring at 30rpm/min for 10 min;
s3, adding hydrogen peroxide into the solution obtained in the step S2, and stirring at 30rpm/min for 15 min;
s4, adding a citric acid-disodium hydrogen phosphate buffer pair into the mixed liquid obtained in the step S3, and stirring at 30rpm/min for 20 min;
s5, adding ethylene glycol into the mixed solution obtained in the step S4, and stirring at 30rpm/min for 20 min;
s6, adding hydroxyethylidene diphosphonic acid into the mixed solution obtained in the step S5, and stirring at 30rpm/min for 10min to obtain the final product.
Example 2
A preparation method of a low-temperature peroxyacetic acid disinfectant comprises the following steps:
s1, weighing 2% of peroxyacetic acid, 1% of hydrogen peroxide, 1% of citric acid-disodium hydrogen phosphate buffer pair with pH of 5.0, 10% of ethylene glycol, 1% of hydroxyethylidene diphosphonic acid and water;
s2, mixing water and peroxyacetic acid, and stirring at 30rpm/min for 10 min;
s3, adding hydrogen peroxide into the solution obtained in the step S2, and stirring at 30rpm/min for 15 min;
s4, adding a citric acid-disodium hydrogen phosphate buffer pair into the mixed liquid obtained in the step S3, and stirring at 30rpm/min for 20 min;
s5, adding ethylene glycol into the mixed solution obtained in the step S4, and stirring at 30rpm/min for 20 min;
s6, adding hydroxyethylidene diphosphonic acid into the mixed solution obtained in the step S5, and stirring at 30rpm/min for 10min to obtain the final product.
Example 3
A preparation method of a low-temperature peroxyacetic acid disinfectant comprises the following steps:
s1, weighing 0.15% of peroxyacetic acid, 3% of hydrogen peroxide, 0.1% of citric acid-disodium hydrogen phosphate buffer pair with pH of 4.0, 15% of ethylene glycol, 0.1% of hydroxyethylidene diphosphonic acid and water;
s2, mixing water and peroxyacetic acid, and stirring at 30rpm/min for 10 min;
s3, adding hydrogen peroxide into the solution obtained in the step S2, and stirring at 30rpm/min for 15 min;
s4, adding a citric acid-disodium hydrogen phosphate buffer pair into the mixed liquid obtained in the step S3, and stirring at 30rpm/min for 20 min;
s5, adding ethylene glycol into the mixed solution obtained in the step S4, and stirring at 30rpm/min for 20 min;
s6, adding hydroxyethylidene diphosphonic acid into the mixed solution obtained in the step S5, and stirring at 30rpm/min for 10min to obtain the final product.
Comparative example 1
A commercially available peroxyacetic acid disinfectant.
Performance detection
1. Detection of anti-freezing effect
The disinfectant solutions of examples 1 to 3 and comparative example 1 of the present application were tested for their antifreeze effect according to the low-temperature test described in the notice of the technical requirements for evaluation of sanitary safety of low-temperature disinfectants issued by the national institutes of health and wellness.
5ml of each of the disinfecting liquids of examples 1 to 3 and comparative example 1 was left at a low temperature of-23 ℃ overnight (>8 hours), and the shape thereof was observed and recorded. The low-temperature disinfectant is judged to be qualified if the low-temperature disinfectant is kept in a liquid state and has no precipitation or crystallization. The results of the experiment are shown in Table 1.
TABLE 1
| Observe for 8h | Observe for 10h | Observe for 12h | Observation for 14h | Observe for 16h | Observe for 18h | |
| Example 1 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Example 2 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Example 3 | Qualified | Qualified | Qualified | Qualified | Qualified | Qualified |
| Comparative example 1 | Fail to be qualified | Fail to be qualified | Fail to be qualified | Fail to be qualified | Fail to be qualified | Fail to be qualified |
As can be seen from Table 1, the disinfectant of examples 1-3 of the present application remained in a liquid state, did not precipitate, and did not crystallize after being frozen at-23 deg.C for 18h, whereas the commercially available disinfectant was frozen and frozen after being frozen at-23 deg.C for 8h, and lost the disinfection effect, and did not meet the disinfection requirement.
2. Sterilization effect detection
The log kill values (vehicle method) of the disinfecting solutions of example 3 and comparative example 1 were tested at different temperatures according to the "Disinfection Specification". The results are shown in tables 2-5.
TABLE 2
TABLE 3
TABLE 4
TABLE 5
From tables 2 to 5, it can be seen that under the condition of normal temperature of 20 ℃, the sterilizing effects of the two disinfectants can meet the requirements, but the sterilizing effect of the commercially available disinfectants is obviously reduced along with the reduction of the temperature, while the sterilizing effect of the disinfectant of the embodiment 3 of the application is slightly reduced, so that the sterilizing requirements can be completely met.
3. Stability test
The disinfecting solutions of example 3 and comparative example 1 were allowed to stand at 37 ℃ for 14 days, and the content of peracetic acid in the disinfecting solutions before and after standing was measured. The test results are shown in Table 6.
TABLE 6
| Content before preservation (%) | Content after storage (%) | Rate of decrease (%) | |
| Example 3 | 0.24 | 0.21 | 12.5 |
| Comparative example 1 | 0.23 | 0.17 | 26 |
As can be seen from Table 6, the disinfectant of example 3 of the present application, when left at 37 ℃ for 14 days, showed a low decrease in the peracetic acid content, and it was determined that the effective period was 12 months or longer.
4. Corrosion test of metals
The corrosion of the disinfectant was measured by immersing the metal pieces in the disinfectant of example 3 and comparative example 1 of the present application (each experiment was performed three times, and the average was taken). The results are shown in Table 7.
TABLE 7
As can be seen from Table 7, the disinfectant of example 3 of the present application has substantially no corrosion to stainless steel, slight corrosion to aluminum, moderate corrosion to copper and carbon steel; the commercial peroxyacetic acid disinfectant has no corrosion to stainless steel basically, moderate corrosion to aluminum and carbon steel and severe corrosion to copper. The experimental results show that the disinfectant has low corrosivity.
The embodiments of the present invention are the preferred embodiments of the present invention, and the scope of the present invention is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered within the protection scope of the invention.
Claims (8)
1. A low-temperature peroxyacetic acid disinfectant is characterized in that: comprises the following components in percentage by weight:
2. the low temperature peroxyacetic acid disinfectant of claim 1, wherein: the antifreezing agent is one or more of inorganic salt, low-carbon alcohol and polyhydric alcohol.
3. The low temperature peroxyacetic acid disinfectant of claim 2, wherein: the inorganic salt is sodium chloride, calcium chloride or magnesium chloride; the lower alcohol is methanol, ethanol, butanol or pentanol; the polyalcohol is ethylene glycol, propylene glycol or glycerol.
4. The low temperature peroxyacetic acid disinfectant of claim 1, wherein: the stabilizer is one or two of a phosphine compound and a buffer system.
5. The low temperature peroxyacetic acid disinfectant of claim 4, wherein: the phosphide is phosphoric acid, 2-phosphonic acid butane-1, 2, 4-tricarboxylic acid, diethylenetriamine pentamethylene phosphonic acid, ethylene diamine tetramethylene phosphonic acid or hydroxy ethylidene diphosphonic acid; the buffer system is citric acid-disodium hydrogen phosphate buffer solution with the pH value of 3.0-5.0.
6. The low temperature peroxyacetic acid disinfectant of claim 1, wherein: the corrosion inhibitor is one or more of amino carboxylate, hydroxyquinoline salt and phosphorus-containing compound.
7. The low temperature peroxyacetic acid disinfectant of claim 6, wherein: the amino carboxylate is sodium aminotriacetate, ethylene diamine tetraacetic acid, disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate or diethylenetriamine pentacarboxylate; the hydroxyquinoline salt is hydroxyquinoline, 8-hydroxyquinoline aluminum, 8-hydroxyquinoline copper or 8-hydroxyquinoline sulfate; the phosphorus-containing compound is phosphoric acid, pyrophosphoric acid, hexametaphosphoric acid, sodium pyrophosphate, ethylene diamine tetra methyl phosphoric acid, hydroxy toluene methylene diphosphonic acid, hydroxy ethylene diphosphonic acid, diethylene triamine pentamethylene phosphoric acid or dimethyl aminomethane methylene diphosphonic acid.
8. A method for preparing a low-temperature peroxyacetic acid disinfectant as set forth in any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, weighing specified amounts of peracetic acid, hydrogen peroxide, a stabilizer, an antifreezing agent, a corrosion inhibitor and water;
s2, mixing water and peroxyacetic acid, and stirring at 30-50rpm/min for 8-10 min;
s3, adding hydrogen peroxide into the solution obtained in the step S2, and stirring at 30-50rpm/min for 10-15 min;
s4, adding a stabilizer into the mixed solution obtained in the step S3, and stirring at 30-50rpm/min for 15-20 min;
s5, adding an antifreezing agent into the mixed solution obtained in the step S4, and stirring at 30-50rpm/min for 15-20 min;
s6, adding the corrosion inhibitor into the mixed liquid obtained in the step S5, and stirring at 30-50rpm/min for 8-10min to obtain the corrosion inhibitor.
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Cited By (1)
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| CN114631529A (en) * | 2022-02-25 | 2022-06-17 | 湖北微控生物科技有限公司 | Unitary stable composite peroxyacetic acid disinfectant and preparation method thereof |
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2021
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| JP2004043411A (en) * | 2002-07-16 | 2004-02-12 | Nippon Peroxide Co Ltd | Disinfectant composition |
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Application publication date: 20210910 |