Chlorine dioxide generating hydrous tablet, chlorine dioxide generator and method of use thereof

Abstract

To provide a chlorine dioxide generating composition for simultaneously discharging chlorine dioxide and moisture, and a one pack type and compact chlorine dioxide generating tool using the same which has less chlorine odor at the time of use start and can generate more chlorine dioxide, and ensures a longer period during which chlorine dioxide is generated.SOLUTION: A hydrous tablet generates chlorine dioxide, wherein the hydrous tablet contains a chlorite (A), a water-absorbing resin (B) and a hydrophilic binding agent (C), a content of the moisture in the hydrous tablet is 3 wt.% or more and 20 wt.% or less with respect to the total weight, and the hydrous tablet generates chlorine dioxide while discharging moisture.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hydrous tablet that generates chlorine dioxide and moisture, a chlorine dioxide generator, and a method for using the same. [Background technology]

[0002] In recent years, chlorine dioxide has been attracting attention as an alternative antibacterial agent to chlorine. Although chlorine dioxide is said to be a gas that is safe for the human body, the U.S. Occupational Safety and Health Administration (US OSHA) has set a permissible exposure concentration standard for inhalation exposure to chlorine dioxide at 0.1 ppm 8-hour time-weighted average (PEL-TWA) from the perspective of occupational safety and health. It is desirable for chlorine dioxide generators to generate an amount within this standard. However, there are many products on the market that generate chlorine dioxide in amounts that far exceed this standard. A product that generates an amount within this standard and has a high disinfecting effect is desirable.

[0003] On the other hand, it has been reported that the higher the humidity, the more effective chlorine dioxide is against influenza viruses (for example, Non-Patent Document 1). When chlorine dioxide is released together with moisture, there is more moisture around the chlorine dioxide, so it is presumed to be more affected by moisture than if chlorine dioxide were simply present alone in the environment, and as a result, it is presumed to be able to achieve a disinfecting effect even with a smaller amount generated. As such, the present applicant has proposed a bagged antibacterial agent containing water-absorbent resin particles containing water that generate chlorine dioxide (Patent Document 1), and a chlorine dioxide generator containing a hydrous gel containing chlorite (Patent Document 2). These are one-liquid, compact chlorine dioxide generators that are used as chlorine dioxide generators that release chlorine dioxide and water simultaneously, have a reduced chlorine odor at the start of use, and release chlorine dioxide stably. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6748431 [Patent Document 2] Patent No. 6385577 [Non-patent literature]

[0005] [Non-Patent Document 1] Environmental Infection Vol.32 No.5.2017 "Control of airborne influenza viruses with low-concentration chlorine dioxide" Summary of the Invention [Problem to be solved by the invention]

[0006] However, the products manufactured using these techniques can stably generate chlorine dioxide for only about one month, and there is a demand for a longer period of generation.

[0007] Furthermore, in the above-mentioned one-liquid type chlorine dioxide generating composition, the reactivity of chlorine dioxide is high, and even a small amount of chlorine dioxide generated can corrode the container during storage, so the reaction must be suppressed as much as possible when the composition is sealed. However, it is very difficult to completely suppress the reaction, and there is a problem that the lid sometimes corrodes. Conversely, if the reaction is suppressed too much, the amount of chlorine dioxide generated when the lid is opened for use is small, resulting in a problem of reduced deodorizing properties.

[0008] An object of the present invention is to provide a chlorine dioxide generating composition that simultaneously releases chlorine dioxide and moisture, and a one-liquid, compact chlorine dioxide generator using the same, which has a reduced chlorine odor at the start of use, can generate a larger amount of chlorine dioxide, and has a longer period for generating chlorine dioxide. [Means for solving the problem]

[0009] As a result of extensive research, the inventors have found that the above object can be achieved by forming a tablet containing chlorite and water, and have arrived at the present invention. That is, the present invention provides a hydrous tablet that generates chlorine dioxide, The hydrous tablet contains a chlorite (A), a water-absorbent resin (B), and a hydrophilic binder (C), the hydrophilic binder (C) is a hydrophilic organic binder (C1) and / or a hydrophilic inorganic mineral powder (C2); The amount of the chlorite (A) is 0.1% by weight or more and 25% by weight or less based on the weight of the hydrous tablet, Record the amount of the aqueous resin (B) is 0.4% by weight or more and 5% by weight or less based on the weight of the hydrous tablet; the amount of the hydrophilic organic binder (C1) is 22.2% by weight or more and 40.8% by weight or less based on the weight of the hydrous tablet, and the amount of the hydrophilic inorganic mineral powder (C2) is 15% by weight or more and 70% by weight or less based on the weight of the hydrous tablet; The water content in the hydrous tablet is 3% by weight or more and 20% by weight or less based on the total weight, This is a hydrous tablet that generates chlorine dioxide while releasing moisture.

[0011] Furthermore, the present invention is directed to a method for producing a hydrophilic organic binder (C1) comprising polyethylene glycol and / or a derivative thereof. be It is characterized by:

[0012] Furthermore, the present invention is characterized in that the inorganic mineral powder (C2) is one or more selected from bentonite, zeolite, sepiolite, diatomaceous earth and shirasu balloon, and its content is 20 to 70% by weight based on the total weight.

[0013] The present invention also provides a chlorine dioxide generator formed from an airtight container containing the above-mentioned water-containing tablet, characterized in that the airtight container has a hole through which chlorine dioxide and moisture can be released, and the hole is closed when not in use to maintain airtightness.

[0014] The present invention also provides a method for using the chlorine dioxide generator, which comprises opening a hole in the airtight container of the chlorine dioxide generator to release chlorine dioxide and moisture. [Effects of the Invention]

[0015] According to the present invention, there can be provided a chlorine dioxide generating composition that simultaneously releases chlorine dioxide and moisture, and a one-liquid, compact chlorine dioxide generator using the same, which has a reduced chlorine odor at the start of use, can generate a larger amount of chlorine dioxide, and has a longer period for generating chlorine dioxide. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, the embodiments of the present invention will be described in detail. However, the present invention is not limited to the following embodiments. Various modifications can be made to the following embodiments within the same or equivalent scope of the present invention.

[0017] The chlorite salt in the present invention is not particularly limited as long as it reacts with an acid to generate chlorine dioxide, and examples thereof include alkali metal chlorite salts such as sodium chlorite, potassium chlorite, and lithium chlorite, and alkaline earth metal chlorite salts such as calcium chlorite, magnesium chlorite, and barium chlorite. Of these, sodium chlorite is preferred because it is easily available and has no problems in use.

[0018] Chlorite dissolves in water and exhibits alkaline properties. It is chemically stable at a pH of 8.5 or higher, and can be stored in a sealed container for approximately 0.5 to 1 year. However, if the chlorite aqueous solution becomes acidic, it will generate chlorine dioxide. Therefore, even in solid form, the aqueous solution must be alkaline, exhibiting a pH of 8.5 or higher. Furthermore, a stabilized chlorine dioxide aqueous solution, which is an aqueous solution stabilized by dissolving chlorine dioxide in an alkaline aqueous solution, is in equilibrium with chlorite in the aqueous solution, and the stabilized chlorine dioxide aqueous solution can also be used as the chlorite in the present invention.

[0019] The amount of chlorite is preferably 0.1% by weight or more and 25% by weight or less, more preferably 0.2% by weight or more and 15% by weight or less, based on the weight of the hydrous tablet. If the amount is 0.1% by weight or more, the hydrous tablet can stably generate chlorine dioxide. If the amount is 25% by weight or less, the amount of chlorine dioxide generated by the hydrous tablet can be controlled.

[0020] The water-absorbent resin (B) in the present invention is not particularly limited to natural or synthetic systems, as long as it absorbs water, swells, and gels as a whole. Examples include partially neutralized crosslinked polyacrylic acid, neutralized starch-acrylic acid graft polymer, hydrolyzed starch-acrylonitrile graft polymer, saponified vinyl acetate-acrylic ester copolymer, crosslinked isobutylene-maleic anhydride copolymer, hydrolyzed acrylonitrile copolymer or acrylamide copolymer, or crosslinked products thereof, crosslinked acrylate-acrylamide copolymer, crosslinked polyvinyl alcohol, crosslinked modified polyethylene oxide, crosslinked acrylamido-2-methylpropanesulfonate copolymer, crosslinked (meth)acryloylalkanesulfonate copolymer, crosslinked carboxymethylcellulose salt, crosslinked polymer of cationic monomer, etc. Among these, partially neutralized crosslinked polyacrylic acid and neutralized starch-acrylic acid graft polymer are preferred due to their particularly good water absorption properties, safety, and economy.

[0021] The water-absorbing resin may be used alone or in a suitable mixture of two or more kinds. The water-absorbing resin is in a particulate form and may be granulated into a predetermined shape, and the shape may be irregularly crushed, spherical, scaly, fibrous, rod-like, lump-like, powdery, or the like, without limitation.

[0022] There are no particular limitations on the average particle size of the particles, but it is preferably 30 to 850 μm, more preferably 60 to 400 μm. The water absorption capacity is preferably 20 to 1,000 g / g, and more preferably 80 to 600 g / g.

[0023] The amount of water-absorbent resin is 0.4% by weight or more and 5% by weight or less, and preferably 1.0% by weight or more and 4% by weight or less, based on the weight of the tablet. If it is 0.4% by weight or more, water release is sufficient, and if it is 5% by weight or less, the shape of the hydrous tablet is less likely to collapse.

[0024] The hydrophilic binder (C) in the present invention is a hydrophilic organic binder (C1) and / or a hydrophilic inorganic mineral powder (C2), preferably a hydrophilic organic binder (C1) and a hydrophilic inorganic mineral powder (C2).

[0025] Examples of the hydrophilic organic binder (C1) include polyethylene glycol and / or its derivatives (for example, its methyl, ethyl, or other alkyl carboxylate esters, and its methyl, ethyl, or other alkyl ethers), polyvinyl alcohol, polyvinylpyrrolidone, dextran, pullulan, xanthan gum, carboxymethyl cellulose (CMC), methyl cellulose (MC), sodium polyacrylate (SPA), hydroxypropyl methylcellulose (HPMC), polyethylene oxide (PEO), etc. Among these, polyethylene glycol and / or its derivatives are preferred. Polyethylene glycol having a molecular weight of about 300 to 20,000 can be used, but preferably has a molecular weight of about 1,000 to 10,000.

[0026] The amount of the hydrophilic organic binder (C1) is preferably 5 to 50% by weight, more preferably 10 to 45% by weight, based on the weight of the hydrous tablet. If it is 5% by weight or more, the shape of the hydrous tablet is less likely to collapse, and if it is 50% by weight or less, the binder is less likely to be released. The hydrophilic organic binder (C1) is preferably in the form of a powder, which makes it easy to form a hydrated tablet when mixed and maintains the shape stability of the hydrated tablet when left in the air.

[0027] Examples of the inorganic mineral powder (C2) include bentonite, kaolin minerals (kaolinite, dickite, nacrite, halloysite, etc.), serpentine (chrysotile, lizardite, anticholite, amesite, etc.), montmorillonite minerals (sodium montmorillonite, calcium montmorillonite, magnesium montmorillonite, etc.), smectite (saponite, hectorite, sauconite, hydrite, etc.), pyrophyllite, talc, rosestone, mica (muscovite, phengite, sericite, illite, etc.), silica (cristobalite, quartz, etc.), double-chain clay minerals (palygorskite, sepiolite, etc.), sulfate minerals such as gypsum, dolomite, calcium silicate, calcium carbonate, gypsum, zeolite, zeolite, tuff, vermiculite, laponite, pumice, diatomaceous earth, and shirasu balloons. In addition, inorganic materials of hollow structure particles such as alumina balloons, glass balloons, silica balloons, shirasu balloons, fly ash balloons (FA balloons), and mullite balloons can also be preferably used. Among these, one or more selected from bentonite, zeolite, sepiolite, diatomaceous earth and shirasubaroon are preferred, from the viewpoint of being able to retain a large amount of generated chlorine dioxide in the hydrous tablet.

[0028] The amount of inorganic mineral powder (C2) is preferably 15% by weight or more and 70% by weight or less, more preferably 20% by weight or more and 35% by weight or less, based on the amount of the hydrated tablet. If it is 15% by weight or more, the shape of the hydrated tablet can be maintained even when it is hydrated. If it is 70% by weight or less, the inorganic mineral powder (C2) powder is less likely to become loose. The inorganic mineral is preferably in the form of a powder, which is easy to form a hydrous tablet when mixed and can maintain the shape stability of the hydrous tablet when the solid is left in the air.

[0029] The inorganic mineral powder has an average particle size (volume particle size) of usually 1 to 100 μm, preferably 5 to 50 μm. The average particle size can be measured using a laser diffraction / scattering particle size distribution analyzer (HORIBA LA-300, manufactured by Horiba, Ltd.).

[0030] Although the inorganic mineral powder and the hydrophilic organic binder may be used alone, combining several types of them makes it easier to control the shape stability of the hydrous tablet.

[0031] The water content of the hydrous tablet is 3% by weight or more and 20% by weight or less, and preferably 5% by weight or more and 15% by weight or less, based on the total weight of the hydrous tablet. If the water content is less than 3% by weight, the amount of chlorine dioxide generated will not be sustained for a long period of time. If the water content exceeds 20% by weight, the formability will be poor, the hydrous tablet will easily crumble, and shape stability will be poor.

[0032] It is known that chlorine dioxide is more effective against influenza viruses in high humidity. When chlorine dioxide is released together with moisture, there is more moisture around the chlorine dioxide, so it is more affected by moisture than if chlorine dioxide were simply present in the environment, and as a result, it is thought that a smaller amount of chlorine dioxide produced can still be effective at disinfecting.

[0033] The hydrous tablets are formed by mixing the components together. The method for forming the hydrous tablets is not particularly limited, but may be, for example, a method of forming tablets one by one using a mold or a compression molding method, or a method of first producing a large solid product by this method, which may then be cut to form hydrous tablets of the desired shape, with the compression molding method being preferred.

[0034] That is, preferably, the hydrous tablet is obtained by mixing the above-mentioned materials, dispersing them with or without heating, and then compressing the granulated mixture by tableting or the like.

[0035] The pressure during compression molding is 5 kgf / cm to give the resulting hydrous tablet suitable mechanical strength. 2 It is preferable to set the pressure to 100 kgf / cm or more, and in order to improve the generation of chlorine dioxide, 2 Below 80kgf / cm, preferably 2By adjusting the pressure, the shape retention of the hydrous tablet can be adjusted.

[0036] In the above-mentioned tablet method, a tablet press consisting of a compression device combined with a mortar and punches is basically used. When pressure is applied between the upper and lower punches in the mortar via the compression device, a wet tablet of the shape formed by the mortar and punches is formed. As such a tablet press, a commonly known single-shot tablet press that presses tablets one by one can be used, or a rotary tablet press with high production efficiency that has multiple dies arranged along a rotating disk can also be used.

[0037] In addition to the above materials, commonly used ingredients such as excipients, lubricants, binders, pigments, etc. may also be added.

[0038] As mentioned above, the shape of the hydrous tablet is not particularly limited, and examples thereof include cylindrical, elliptical, disc, doughnut, spherical, trapezoidal, conical, etc. The size is also not particularly limited, and for example, in the case of a cylindrical or trapezoidal hydrous tablet, the diameter is usually 20 to 50 mm, preferably 25 to 35 mm, and the height or thickness is usually 5 to 50 mm, preferably 5 to 15 mm.

[0039] The reason why the hydrous tablet produced as described above continues to generate chlorine dioxide for a long period of time is not clear, but is presumed to be as follows. Because the hydrated tablets are compressed, they are solid and dense, making them inherently difficult to generate chlorine dioxide. In other words, the chlorine dioxide generated inside has difficulty escaping from the hydrated tablets, and if it doesn't escape, no space is created inside, preventing further chlorine dioxide generation. Furthermore, because they are compressed and solid and dense, the chlorine dioxide generated inside is slow to escape to the outside. Therefore, chlorine dioxide can be generated slowly over a long period of time. Furthermore, as moisture also escapes from the inside, a path for chlorine dioxide to escape is formed, presumably allowing chlorine dioxide to continue to be generated over a long period of time along with the moisture.

[0040] The hydrous tablet of the present invention releases chlorine dioxide from its interior more slowly than conventional chlorine dioxide generators. In the case of conventional chlorine dioxide generators, such as antibacterial agents packaged in bags containing water-absorbent resin particles containing chlorine dioxide-generating water, the chlorite is contained in particulate form, resulting in a large surface area and a rapid rate of chlorine dioxide generation. In the case of chlorine dioxide generators containing hydrous gel containing chlorite, chlorine dioxide is generated from the gel surface because it is a gel. However, the water-absorbent resin gel is an aggregate of gel particles, and there are gaps between the gel particles, allowing chlorine dioxide to escape to the surface relatively quickly through these gaps.

[0041] In contrast, the hydrous tablet of the present invention is less likely to release chlorine dioxide than the conventional chlorine dioxide generators, so it can be generated little by little over a longer period of time. Furthermore, since the amount of chlorine dioxide generated is greatly affected by the chlorite content, the amount of chlorine dioxide generated can be increased by adjusting the chlorite content in the hydrous tablet.

[0042] The hydrous tablet of the present invention can be placed in an airtight container, which is opened at the time of use and used as a chlorine dioxide generator. The airtight container is not particularly limited as long as it is an airtight container that can store the hydrous tablet for a long period of time, but a preferred chlorine dioxide generator is an airtight container with a small hole that can be closed when not in use and opened when in use to release chlorine dioxide and moisture.

[0043] The container must have gas barrier properties and is made of a material selected from plastics, aluminum substrates, and laminates thereof, with preferred plastics being polyester and polypropylene, and preferred aluminum substrates being aluminum films and aluminum vapor deposition materials.

[0044] For portable chlorine dioxide generators, it is preferable to place the tablets in a compact container. The size of the container can be determined based on the size of the hydrous tablets, or the size of the hydrous tablets can be determined based on the size of the container. It is preferable that the volume of the hydrous tablets occupy at least half of the container's volume. For example, cylindrical hydrous tablets with a diameter of 20 to 50 mm and a thickness of 8 to 30 mm are placed in a cream case with an inner diameter of 30 to 50 mm and an internal thickness of 10 to 40 mm. The cream case has one to ten 0.5 to 5 mm holes. When not in use, the holes are covered with plastic tape, which is then peeled off before use. When the tape is peeled off, chlorine dioxide and water are gradually released through the holes. The size and number of holes can also be adjusted to fine-tune the amount of chlorine dioxide generated.

[0045] The chlorine dioxide generator can be used in a compact form as is, but is preferably portable and can be attached to the chest or used in place of a neck-hanging type chlorine dioxide generator.

[0046] The method of using the chlorine dioxide generator described above involves opening a hole in the airtight container to release chlorine dioxide and moisture. Until the hole is opened, the space inside the airtight container is small, so the amount of chlorine dioxide is small and the container is hardly deteriorated by chlorine dioxide. When not in use, covering the hole with tape or the like can temporarily stop the generation of chlorine dioxide.

[0047] The chlorine dioxide generator of the present invention is a one-liquid type and compact, and while it releases chlorine dioxide and moisture, it can generate chlorine dioxide stably for a longer period of time than conventional devices. It also produces less chlorine odor immediately after opening and can generate a large amount of chlorine dioxide, which allows it to effectively deodorize cigarettes.

[0048] The following examples will be described, but the invention is not limited to these. Example 1 "Silbright 25FD" (manufactured by Nippon Carlit Co., Ltd., stabilized chlorine dioxide, 250,000 ppm) 8 parts by weight, 1.6 parts by weight of "Sunfresh ST-500D" (Sanyo Chemical Industries, Ltd., polyacrylic acid cross-linked water-absorbent resin), 32 parts by weight of "PEG-4000S" (Sanyo Chemical Industries, Ltd., polyethylene glycol), "Super Clay" (Hojun Co., Ltd., bentonite) 30.4 parts by weight, 24 parts by weight of "Marllite M-60H" (Shirasu Balloon, manufactured by Marunaka Hakuto Co., Ltd.) and 4 parts by weight of water were placed in a stainless steel beaker and stirred with a spiral blade (pH at this point was 6.5). 8.7 parts by weight was then transferred to a cylindrical mold and pressed at a pressure of 50 kgf / cm. 2 The mixture was compressed for 30 seconds at 80°C to obtain approximately 8 parts by weight of hydrous tablet A (cylindrical shape, height 10 mm, diameter 30 mm). 75% by weight of the Silbright 25FD was water, and the moisture content of the hydrous tablet was approximately 10% by weight.

[0049] (Examples 2 to 4, Comparative Examples 1 and 2) Using the ingredients listed in Table 1, hydrous tablets B to F of Examples 2 to 4 and Comparative Examples 1 and 2 were obtained in the same manner as in Example 1. Table 1 shows the water content (%) and formability of the hydrous tablets. The formability of the hydrous tablet was evaluated as good if it did not lose its shape when pressed with a hand, and poor if it lost its shape.

[0050] (Raw materials used) Silbright 25FD: Manufactured by Nippon Carlit Co., Ltd., stabilized chlorine dioxide, 250,000 ppm (sodium chlorite 25% by weight) Silbright 80: Made by Nippon Carlit Co., Ltd., stabilized chlorine dioxide, 800,000 ppm (sodium chlorite 80% by weight) Sunfresh ST-500D: Sanyo Chemical Industries, Ltd., polyacrylic acid cross-linked water-absorbent resin PEG4000S: Polyethylene glycol, manufactured by Sanyo Chemical Industries, Ltd. PEG300: Polyethylene glycol, manufactured by Sanyo Chemical Industries, Ltd. Super Clay: Bentonite manufactured by Hojun Co., Ltd. Marllite M60H: Marunaka Shirasu Balloon Zeolite M60P: Zeolite manufactured by Shin Tohoku Chemical Industry Co., Ltd. KOH: Reagent, potassium hydroxide

[0051] [Table 1]

[0052] Example 5 The hydrous tablet A of Example 1 was placed in a cream case with an inner diameter of 33 mm and an internal thickness of 22 mm. Five circular holes, each 2 mm in diameter, had been drilled in the cream case. These holes were covered with plastic tape to prepare the chlorine dioxide generator a of the present invention.

[0053] (Test 1) The tape was removed from the chlorine dioxide generator a, and the amount of chlorine dioxide generated (ppm) and weight were measured. The amount of water released was calculated from the weight measurement. The results are shown in Table 2.

[0054] [Table 2]

[0055] It was confirmed that the hydrous tablet of the present invention was able to release chlorine dioxide along with water, and was still able to generate chlorine dioxide even after two months.

[0056] (Examples 6 to 8, Comparative Examples 3 and 4) Chlorine dioxide generators b to d (Examples 6 to 8) and chlorine dioxide generators e and f (Comparative Examples 3 and 4) were prepared in the same manner as in Example 5, except that hydrous tablets B to F were used instead of hydrous tablet A.

[0057] (Test 2) Chlorine dioxide generators a to d and comparative chlorine dioxide generators e to f were evaluated for the amount of chlorine dioxide generated, their ability to deodorize cigarettes, and the chlorine odor emitted when the hole in the container was opened. The results are shown in Table 3.

[0058] [Table 3]

[0059] (Evaluation method) 1.Measuring method for the amount of chlorine dioxide generated The plastic tape was removed from the chlorine dioxide generator and it was placed in a 10L gas-repair bag. After 30 minutes, the bag was shaken up and down to equalize the gas inside, and the chlorine dioxide release concentration (ppm) in the bag was measured using a detector tube. The detector tube used was a chlorine dioxide measurement detector tube No. 116 (manufactured by Komyo Chemical Industry Co., Ltd.). The same applies below.

[0060] 2. Tobacco deodorizing properties The plastic tape on a chlorine dioxide generator was removed and the device was placed in a 15L plastic container that had been filled with cigarette smoke for 15 seconds.The device was then sealed and five people evaluated the presence or absence of cigarette odor one day later. No...No tobacco smell Yes...There is a cigarette smell

[0061] 3. Chlorine odor and amount of chlorine generated Five minutes after removing the plastic tape from the chlorine dioxide generator, the device was placed in a 4L plastic container and the lid was closed. After leaving it to stand for 10 minutes, five people smelled the chlorine odor inside the container and judged the intensity of the chlorine odor. Chlorine smell: Small No chlorine smell, or a smell that is not noticeable Medium: There is a slight chlorine smell, but the chlorine smell is noticeable. Strong chlorine smell

[0062] From Tables 2 and 3, it was confirmed that the hydrous tablet of the present invention had little initial chlorine odor, generated chlorine dioxide together with moisture, and stably released it for two months.

Claims

1. A hydrous tablet that generates chlorine dioxide, The hydrous tablet contains a chlorite (A), a water-absorbent resin (B), and a hydrophilic binder (C), the hydrophilic binder (C) is a hydrophilic organic binder (C1) and / or a hydrophilic inorganic mineral powder (C2); the amount of the chlorite (A) is 0.1% by weight or more and 25% by weight or less relative to the weight of the hydrous tablet, and the amount of the water-absorbent resin (B) is 0.4% by weight or more and 5% by weight or less relative to the weight of the hydrous tablet, the amount of the hydrophilic organic binder (C1) is 22.2% by weight or more and 40.8% by weight or less based on the weight of the hydrous tablet, and the amount of the hydrophilic inorganic mineral powder (C2) is 15% by weight or more and 70% by weight or less based on the weight of the hydrous tablet; The water content of the hydrous tablet is 3% by weight or more and 20% by weight or less based on the total weight of the tablet; A hydrous tablet that generates chlorine dioxide while releasing moisture.

2. 2. The hydrous tablet for generating chlorine dioxide according to claim 1, wherein the hydrophilic organic binder (C1) is polyethylene glycol and / or a derivative thereof.

3. 2. The hydrous tablet according to claim 1, wherein the inorganic mineral powder (C2) is one or more selected from the group consisting of bentonite, zeolite, sepiolite, diatomaceous earth and shirasubaroon, and the content thereof is 20 to 35% by weight based on the total weight.

4. A chlorine dioxide generator formed from an airtight container containing a water-containing tablet according to any one of claims 1 to 3, wherein the airtight container has a hole through which chlorine dioxide and moisture are released, and the hole is closed when not in use to maintain airtightness.

5. 5. A method for using the chlorine dioxide generator according to claim 4, wherein the hole in the airtight container is opened to release chlorine dioxide and moisture.

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