CN115669655A - Stabilizer for chlorine-containing disinfectant, stable 84 disinfectant and preparation method thereof - Google Patents
Stabilizer for chlorine-containing disinfectant, stable 84 disinfectant and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a stabilizer for chlorine-containing disinfectant, which mainly comprises potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate as raw materials; the stabilizer with comprehensive functions and high efficiency is adopted, so that the stability of the chlorine-containing disinfectant can be greatly improved, the disinfectant can be stored at normal temperature for at least more than 1 year, the disinfectant has a good killing effect on escherichia coli, staphylococcus aureus, candida albicans and bacillus subtilis var niger spores, and the requirements of disinfection technical specifications (2002 edition) of sanitation requirements of chlorine-containing disinfectants (sanitary requirements of epidemic focus disinfectants).
Description
Technical Field
The invention relates to the field of disinfection solution, and in particular relates to a stabilizer for chlorine-containing disinfection solution, a stable 84 disinfection solution and a preparation method thereof.
Background
The chlorine-containing disinfectant is a chemical disinfectant which is applied earliest and used most widely, and has the advantages of wide bactericidal spectrum, reliable bactericidal effect, simple production process, convenient use, low price and the like, so the chlorine-containing disinfectant has wide application range and is durable. At present, the chlorine-containing disinfectant with the largest sale amount in domestic and overseas markets is a sodium hypochlorite disinfectant, is sold under the brand name of '84 disinfectant' in China, and is widely applied to various fields of families, medical institutions, industry, agriculture, food industry, pharmaceutical industry, breeding industry and the like. Because sodium hypochlorite is a strong oxidant, the chemical property is unstable and easy to decompose, the sodium hypochlorite is influenced by various factors such as environment, pH, temperature, pH value, metal ions and the like, the product has poor stabilizing effect, and particularly the sodium hypochlorite is easily influenced by the rise of the environmental temperature in the storage and transportation processes, so that the effective period of the product in summer is very easy to shorten. The actual validity period of the current commercially available 84 disinfectant is only 3-6 months, but the validity period of the sodium hypochlorite disinfectant is required to reach more than 6 months by the hygiene quality technical specification, and more specifically, the industry requirement is 12 months. Therefore, in the production process of the 84 disinfectant, the temperature, the pH value and the concentration need to be strictly controlled, the illumination and ultraviolet rays are avoided, the introduction of heavy metal ions and organic matters is reduced, and the proper stabilizer is added to ensure that the 84 disinfectant is stable and efficient and has a longer effective retention period. Surfactants are also used in the prior art to increase the stability of sodium hypochlorite, but some surfactants are used to not only make the disinfectant turbid, but also accelerate the decomposition of sodium hypochlorite. In addition, some stabilizing agents are added into the sodium hypochlorite, which not only cannot play a stabilizing role, but also have a separation promoting role on the sodium hypochlorite. Therefore, because sodium hypochlorite itself has strong oxidizing property and alkalinity, the addition of the auxiliary agent in the disinfectant can affect the quality of the sodium hypochlorite to a greater or lesser extent.
Disclosure of Invention
In view of this, the present invention provides a stabilizer for a chlorine-containing disinfection solution, a stable 84 disinfection solution, and a preparation method thereof, which can enable the chlorine-containing disinfection solution to be stored at room temperature for at least more than 1 year, and have a good killing effect on escherichia coli, staphylococcus aureus, candida albicans, and bacillus subtilis var niger.
The raw materials of the stabilizer for the chlorine-containing disinfectant mainly comprise potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate;
further, 5-15 parts of potassium bromide, 5-15 parts of sodium metasilicate pentahydrate and 1-5 parts of sodium bicarbonate in parts by weight;
further, the raw materials of the stabilizer also comprise 1-10 parts of sterilization synergist, 5-15 parts of surfactant, 10-15 parts of PH buffer and 1-10 parts of color fixative by weight;
further, the sterilization synergist is sodium bromide;
further, the pH buffering agent is sodium bicarbonate and sodium metasilicate pentahydrate;
further, the surfactant is sodium dodecyl benzene sulfonate;
further, the color fixative is potassium nitrate.
The invention also discloses a stable 84 disinfectant, which contains the stabilizer of any one of claims 1-7, and the raw materials of the disinfectant comprise the following components in parts by weight: sodium hypochlorite 20-60 parts, and stabilizer 2-6 parts.
The invention also discloses a preparation method of the stable 84 disinfectant, which comprises the following steps: a. uniformly mixing all components of the stabilizer according to the set weight part, heating to 20-40 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer with purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
The invention has the beneficial effects that: the stabilizer and the stable 84 disinfectant for the chlorine-containing disinfectant and the preparation method thereof adopt the stabilizer with comprehensive functions, synergy and high efficiency, can greatly improve the stability of the chlorine-containing disinfectant, can ensure that the disinfectant can be stored at normal temperature for at least more than 1 year, has good killing effect on escherichia coli, staphylococcus aureus, candida albicans and bacillus subtilis black variant spores, and meets the requirements of the disinfection technical specification (2002 edition) of the sanitation requirement of the chlorine-containing disinfectant in epidemic focus.
Detailed Description
In the stabilizer for chlorine-containing disinfectant of the embodiment, the raw materials of the stabilizer mainly comprise potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate; potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate are used as main stabilizers, and the potassium bromide, the sodium metasilicate pentahydrate and the sodium bicarbonate are synergistic, so that the stability of the chlorine-containing disinfectant is improved. The action mechanism is as follows: the halide potassium bromide reacts in solution with sodium hypochlorite as follows:
ClO - +Br——BrO-+Cl - ，ClO+2Br+H 2 O——Br2+Cl-+20H,ClO -
partially reacted to BrO - ,BrO - Is more stable than ClO-and has the function of sterilization. When ClO is present -
And BrO - When an equilibrium is reached, the decomposition rate of NaClO will be rapidly slowed down.
The potassium bromide can react with hypochlorite in the sodium hypochlorite solution to generate more stable BrO - When it comes to
BrO - And ClO - When equilibrium is reached in the solution, the rate of decomposition of sodium hypochlorite rapidly slows.
The transition metal ions in the sodium hypochlorite solution can be decomposed by sodium hypochlorite. The reaction formula is as follows:
2MO+NaClO＝NaCl+M 2 O 3
M 2 O 3 +NaClO＝NaCl+2MO+O 2 ↑
the sodium metasilicate pentahydrate has high PH buffer capacity, has an anti-corrosion effect on metals, and has certain constraint on calcium and magnesium examples. The hypochlorous acid is rapidly decomposed under the acidic condition, the decomposition rate can be slowed down when the pH value is increased, the reaction speed is slowed down by about 20 percent when the pH value is increased by one pH value unit, the solution with the pH value of more than 7 is stable, the solution with the pH value of less than 7 is unstable, and the hypochlorous acid can be rapidly decomposed when the pH value is less than 5. But the disinfection and sterilization effect is reduced along with the increase of the pH value, the solution pH value is kept between 8 and 9, and the sterilization effect and the stability are relatively balanced. The pH value of the disinfectant can be kept stable at 11 or above in the production and storage processes. The pH can be adjusted by adding sodium bicarbonate and sodium metasilicate pentahydrate. Only one or two of potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate are adopted, or the potassium bromide, the sodium metasilicate pentahydrate and the sodium bicarbonate are replaced by other types of stabilizers such as phosphate, potassium chlorate and potassium iodide, so that the chlorine-containing disinfectant cannot meet the stability requirement of being stored at normal temperature for more than 1 year.
In the embodiment, the weight parts of potassium bromide are 5-15 parts, sodium metasilicate pentahydrate is 5-15 parts, and sodium bicarbonate is 1-5 parts.
In the embodiment, the raw materials of the stabilizer further comprise 1-10 parts by weight of a sterilization synergist, 5-15 parts by weight of a surfactant, 10-15 parts by weight of a pH buffering agent and 1-10 parts by weight of a color fixative; the sterilization synergist can improve the sterilization effect of the chlorine-containing disinfectant; the surfactant increases the solubility of each component and improves the compatibility of each component; the pH buffer can keep the pH value of the chlorine-containing disinfection solution stable, and the color fixative can improve the stability of the chlorine-containing disinfection solution, so that the chlorine-containing disinfection solution is not easy to change color under the condition of long-term storage. The sterilization synergist, the surfactant, the PH buffering agent and the color fixative are used in combination with the potassium bromide, the sodium metasilicate pentahydrate and the sodium bicarbonate, so that the stability of the chlorine-containing disinfectant can be further enhanced, the storage period of the chlorine-containing disinfectant can be prolonged, the sodium hypochlorite in the disinfectant can not be influenced, the sterilization effect can be increased, and the sterilization synergist has a good killing effect on escherichia coli, staphylococcus aureus, candida albicans and bacillus subtilis black variant spores.
In this embodiment, the bactericidal synergist is sodium bromide; the PH buffering agent is sodium bicarbonate and sodium metasilicate pentahydrate; the surfactant is sodium dodecyl benzene sulfonate; the color fixative is potassium nitrate, and the sodium bromide, the sodium bicarbonate, the sodium metasilicate pentahydrate, the sodium dodecyl benzene sulfonate and the potassium nitrate have good synergistic effect on the potassium bromide, the sodium metasilicate pentahydrate and the sodium bicarbonate, and cannot influence the sodium hypochlorite in the disinfectant.
The invention also discloses a stable 84 disinfectant, which contains the stabilizer of any one of claims 1-7, and the raw materials of the disinfectant comprise the following components in parts by weight: sodium hypochlorite 20-60 parts, and stabilizer 2-6 parts. The stabilizing agent disclosed by the invention is used in cooperation with sodium hypochlorite, and can well improve the stability of the sodium hypochlorite.
The invention also discloses a preparation method of the stable 84 disinfectant, which comprises the following steps: a. uniformly mixing all the components of the stabilizer according to the set weight part, heating to 20-40 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer with purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
Example one
In the stabilizer for chlorine-containing disinfection solution of the embodiment, the raw materials of the stabilizer comprise the following components in parts by weight: 5 parts of potassium bromide, 5 parts of sodium metasilicate pentahydrate and 1 part of sodium bicarbonate. The preparation method of the stable 84 disinfectant by adopting 2 parts of the stabilizer and 20 parts of sodium hypochlorite comprises the following steps: a. uniformly mixing all components of the stabilizer according to the set weight part, heating to 20 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 44.5 times by using purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
Example two
In the stabilizer for chlorine-containing disinfection solution of the embodiment, the raw materials of the stabilizer comprise the following components in parts by weight: 10 parts of potassium bromide, 5 parts of sodium metasilicate pentahydrate and 5 parts of sodium bicarbonate.
The preparation method of the stable 84 disinfectant by adopting 6 parts of the stabilizer and 60 parts of sodium hypochlorite comprises the following steps: a. uniformly mixing all components of the stabilizer according to the set weight part, heating to 40 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 20 times by using purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
EXAMPLE III
The stabilizer for the chlorine-containing disinfection solution of the embodiment comprises the following raw materials in parts by weight: 5 parts of potassium bromide, 5 parts of sodium metasilicate pentahydrate, 1 part of sodium bicarbonate, 1 part of sterilization synergist, 5 parts of surfactant, 10 parts of PH buffer and 1 part of color fixative.
The stabilizing agent 3 and 40 parts of sodium hypochlorite are adopted to prepare the stable 84 disinfectant, and the preparation method comprises the following steps: a. uniformly mixing all components of the stabilizer according to the set weight part, heating to 30 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 17 times by using purified water for later use;
b. and c, adding sodium hypochlorite into the mixed solution diluted in the step a, and uniformly stirring.
Example four
The stabilizer for the chlorine-containing disinfection solution of the embodiment comprises the following raw materials in parts by weight: 15 parts of potassium bromide, 15 parts of sodium metasilicate pentahydrate, 5 parts of sodium bicarbonate, 10 parts of a sterilization synergist, 15 parts of a surfactant, 15 parts of a pH buffering agent and 10 parts of a color fixative.
The preparation method of the stable 84 disinfectant by adopting 4 parts of the stabilizer and 30 parts of sodium hypochlorite comprises the following steps: a. uniformly mixing all components of the stabilizer according to the set weight part, heating to 25 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 5 times by using purified water for later use;
b. and c, adding sodium hypochlorite into the mixed solution diluted in the step a, and uniformly stirring.
EXAMPLE five
The stabilizer for the chlorine-containing disinfection solution of the embodiment comprises the following raw materials in parts by weight: 5 parts of potassium bromide, 15 parts of sodium metasilicate pentahydrate, 1 part of sodium bicarbonate, 10 parts of sterilization synergist, 5 parts of surfactant, 15 parts of PH buffer and 1 part of color fixative.
The preparation method of the stable 84 disinfectant by adopting 5 parts of the stabilizer and 50 parts of sodium hypochlorite comprises the following steps: a. uniformly mixing all the components of the stabilizer according to the set weight part, heating to 35 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 9 times by using purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
EXAMPLE six
The stabilizer for the chlorine-containing disinfection solution of the embodiment comprises the following raw materials in parts by weight: 15 parts of potassium bromide, 5 parts of sodium metasilicate pentahydrate, 5 parts of sodium bicarbonate, 1 part of sterilization synergist, 15 parts of surfactant, 10 parts of PH buffer and 10 parts of color fixative.
The stable 84 disinfectant is prepared by adopting 3 parts of the stabilizer and 35 parts of sodium hypochlorite, and the preparation method comprises the following steps: a. uniformly mixing all the components of the stabilizer according to the set weight part, heating to 30 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 7 times by using purified water for later use;
b. and c, adding sodium hypochlorite into the mixed solution diluted in the step a, and uniformly stirring.
EXAMPLE seven
In the stabilizer for chlorine-containing disinfection solution of the embodiment, the raw materials of the stabilizer comprise the following components in parts by weight: 10 parts of potassium bromide, 10 parts of sodium metasilicate pentahydrate, 3 parts of sodium bicarbonate, 5 parts of sterilization synergist, 10 parts of surfactant, 13 parts of PH buffer and 5 parts of color fixative.
The preparation method of the stable 84 disinfectant by adopting 4 parts of the stabilizer and 55 parts of sodium hypochlorite comprises the following steps: a. uniformly mixing all the components of the stabilizer according to the set weight part, heating to 25 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer to 8 times by using purified water for later use;
b. and (b) adding sodium hypochlorite into the mixed solution diluted in the step (a) and uniformly stirring.
In the above examples, examples 3 to 7 are significantly superior in effect to examples 1 and 2.
Comparative example
Comparative example 1: the sodium metasilicate pentahydrate in the stabilizer of example three was deleted, and the remainder was unchanged.
Comparative example 2: sodium bicarbonate in the stabilizer of example three was deleted and the rest was unchanged.
Comparative example 3: the potassium bromide in the stabilizer of the third example was deleted and the rest was unchanged.
Comparative example 4: the sterilization synergist in the stabilizer in the third embodiment is deleted, and the rest is unchanged.
Comparative example 5: the surfactant in the stabilizer of the third example was removed, and the rest was unchanged.
Functional results test 1:
comparative table of physicochemical indexes of 84 sterilizing liquids (stock solutions) prepared according to examples 1 and 3 and comparative examples 1, 2, 3, 4 and 5 after being stored at 54 ℃ for 14 days is as follows:
according to the table, the 84 disinfectant provided by the invention is light yellow transparent liquid in appearance, has effective chlorine smell, has an effective chlorine reduction rate of less than or equal to 10% in 14 days at 54 ℃, and has a pH value of 11-12.
Functional results test 2:
the 84 sterilizing liquids (stock solutions) prepared according to examples 1 and 3 and comparative examples 1, 2, 3, 4 and 5 were divided into 3 groups, and the physical and chemical indexes after 365 days of storage at 20, 30 and 40 ℃ respectively are shown in the following table:
in the 84 disinfectant of the above embodiments 1-7, the killing log values of the diluent with the effective chlorine content of 100mg/L for 10min to the staphylococcus aureus and the escherichia coli are all equal to or more than 5.00, and the killing log values of the diluent with the effective chlorine content of 200mg/L for 10min to the candida albicans are all equal to or more than 5.00, and all meet the qualified disinfection requirements; the effective chlorine content of the diluent of 500mg/L has an effect on black variant spores of bacillus subtilis for 60min, and the killing logarithm value is not less than 5.00, thus meeting the qualified disinfection requirement.
In the 84 disinfectant of the above examples 1-7, the diluent with available chlorine at most 200mg/L can effectively neutralize the killing effect of staphylococcus aureus and candida albicans on the samples neutralized in solution and remained on the thallus surface by using the neutralizing agent of TPS containing 0.3% lecithin, 2% tween 80 and 0.5% sodium thiosulfate, the diluent with available chlorine of 500mg/L of the disinfectant can effectively neutralize the killing effect of bacillus subtilis melanism spores on the samples neutralized in solution and remained thallus surface by using the neutralizing agent of TPS containing 0.3% lecithin, 2% tween 80 and 0.5% sodium thiosulfate, and the neutralizing agent and the neutralized products have no adverse effect on the tested bacteria and the culture medium thereof.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A stabilizer for chlorine-containing disinfection solution, which is characterized in that: the raw materials of the stabilizer mainly comprise potassium bromide, sodium metasilicate pentahydrate and sodium bicarbonate.
2. The stabilizer for chlorine-containing disinfectant according to claim 1, wherein: 5-15 parts of potassium bromide, 5-15 parts of sodium metasilicate pentahydrate and 1-5 parts of sodium bicarbonate.
3. The stabilizer for chlorine-containing disinfection solution as set forth in claim 2, wherein: the stabilizer raw materials also comprise 1-10 parts of sterilization synergist, 5-15 parts of surfactant, 10-15 parts of PH buffer and 1-10 parts of color fixative by weight.
4. The stabilizer for chlorine-containing disinfection solution as set forth in claim 3, wherein: the sterilization synergist is sodium bromide.
5. The stabilizer for chlorine-containing disinfection solution as set forth in claim 3, wherein: the pH buffer is sodium bicarbonate and sodium metasilicate pentahydrate.
6. The stabilizer for chlorine-containing disinfection solution as set forth in claim 3, wherein: the surfactant is sodium dodecyl benzene sulfonate.
7. The stabilizer for chlorine-containing disinfection solution as set forth in claim 3, wherein: the color fixative is potassium nitrate.
8. A stable 84 disinfectant, which is characterized in that: the disinfectant comprises the stabilizer of any one of claims 1 to 7, and the disinfectant raw material comprises the following components in parts by weight: sodium hypochlorite 20-60 parts, and stabilizer 2-6 parts.
9. The method of preparing a stabilized 84 disinfectant as set forth in claim 8, wherein: the method comprises the following steps: a. uniformly mixing all the components of the stabilizer according to the set weight part, heating to 20-40 ℃, uniformly stirring until the components are completely dissolved, cooling to normal temperature to obtain the required stabilizer, and diluting the stabilizer with purified water for later use;
b. and c, adding sodium hypochlorite into the mixed solution diluted in the step a, and uniformly stirring.
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