JP2002113457A - Detoxifying agent for chlorine-containing bleaching/ antibacterial agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treating agent which uses blue No.2 coloring matter as an indicator, can detoxify a used chlorine-containing bleaching/antibacterial agent by adding a proper amount of it, and stabilizes chromaticity for a long period. SOLUTION: Mixed powder contains powdered L-ascorbic acid and/or powdered sodium L-ascorbate, powdered sodium chloride, powdered blue No.2 coloring matter for food, and powdered magnesium carbonate. The detoxifying agent preferably contains 10-30 wt.% of the powdered L-ascorbic acid and/or the powdered sodium L-ascorbate, at least 60 wt.% of the sodium chloride, 0.05-0.5 wt.% of the powdered coloring matter, and 0.3-3 wt.% of the powdered magnesium carbonate as a proper mixing ratio. A surfactant and a pH adjusting agent can be contained additionally in the detoxifying agent.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detoxifying a treatment liquid, a waste liquid or a liquid spilled erroneously after using a chlorine bleaching and disinfecting agent used for home and business use. It relates to a treatment agent.

[0002]

2. Description of the Related Art Chlorine bleaching and disinfecting agents containing hypochlorite as a main component include bleaching and disinfecting of laundry; bleaching and disinfecting and deodorizing of towels and towels; Bleaching, disinfection and deodorization: Widely used for disinfection and deodorization of refrigerators and cupboards, disinfection, deodorization and dirt removal of toilets;
Spread at home. However, it is dangerous because chlorine is rapidly generated when mixed with an acid type drug, and a large amount of chlorine is generated when accidentally spilled. Also, the waste liquid in which hypochlorite remains has an adverse effect on metal parts of kitchen sinks, drain pipes and the like, and when flowing into a septic tank, microorganisms that purify the waste liquid may be killed. Even during normal use, chlorine odor remains in the hands, which is not only unpleasant, but also causes rough hands and rough skin.

[0003]

BACKGROUND OF THE INVENTION The present inventors have proposed an aqueous solution containing an alkaline reducing agent and a coloring agent which is stable to the reducing agent and unstable to the oxidizing agent, as a detoxifying agent for the chlorine bleaching and disinfecting agent. (JP-A-10-235335). Sulfites, thiosulfates, and ascorbates are listed as reducing agents whose aqueous solution is alkaline. Red 401, yellow 203, and blue 2 are stable dyes for the reducing agent and unstable for the oxidizing agent.
No. 407, Yellow No. 402, Orange No. 402, Black No. 401, and Red No. 504. These dyes play an important role as indicators for judging an appropriate amount of the detoxifying agent. In a practical application test at home, it was found that housewives overwhelmingly prefer blue. This seems to be due to the emphasis on cleanliness in the kitchen. However, it was found that Blue No. 2 dye was inferior in long-term storage stability in this treating agent aqueous solution as compared with other edible dyes and faded relatively early. Considering the stock period at the distribution stage and the period until consumers use up, it is required that the chromaticity does not change for at least one year.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an indicator using blue No. 2 dye as an indicator, even if the amount of the chlorine-based bleaching and disinfecting agent used and the effective chlorine concentration are unknown, without any excess or shortage. Is to provide a treating agent which can be rendered harmless by addition of chromium and has long-term stability of chromaticity.

[0005]

The detoxifying agent for the chlorine-based bleaching and disinfecting agent according to the present invention comprises one or both of L-ascorbic acid powder and sodium L-ascorbate powder, and sodium chloride. It is a mixed powder including powder, food color blue No. 2 powder, and magnesium carbonate powder.

An appropriate compounding ratio is 10 to 30% by weight of one or both of L-ascorbic acid powder and sodium L-ascorbate powder, 60% by weight or more of sodium chloride powder, food color blue No. 2 powder 0.0
The amount is preferably about 5 to 0.5% by weight and about 0.3 to 3% by weight of magnesium carbonate powder, and may further contain a surfactant, a pH adjuster when prepared as an aqueous solution, and the like.

When this detoxifying agent is added to an aqueous solution containing a chlorine-based bleaching and disinfecting agent, the hypochlorite in the bleaching and disinfecting agent becomes L-ascorbic acid or L-ascorbic acid in the treating agent. Reacts with sodium to render it harmless. The reaction of sodium hypochlorite, which is an oxidizing agent, and L-ascorbic acid, which is a reducing agent, is represented by the following formula (1), and produces oxidized ascorbic acid (C ₆ H ₆ O ₆ ), salt and water, Sodium hypochlorite is detoxified. NaClO + C ₆ H ₈ O ₆ → C ₆ H ₆ O ₆ + NaCl + H ₂ O (1)

If the amount of the treatment agent is insufficient and hypochlorite remains, the blue No. 2 dye in the treatment agent is oxidized by hypochlorite and decolorized to become colorless. However, when the amount of the treatment agent added becomes sufficient and the hypochlorite disappears, the added aqueous solution is colored in the original color of the dye. Therefore, if the treating agent is added to the point where coloring is observed in the aqueous solution containing the chlorine-based bleaching / disinfecting agent, the hypochlorite in the aqueous solution is completely rendered harmless. In this way, it is extremely easy to use an appropriate amount of the treating agent without knowing the amount of the chlorine-based bleaching and disinfecting agent and the concentration of the active ingredient (hypochlorite). A clear coloring can be recognized when the amount of the detoxifying agent used is 1 to 1.1 times the theoretical amount.

If L-ascorbic acid or sodium L-ascorbate is used in the form of high-purity powder, the amount used at one time becomes extremely small and there is a possibility that it will be used too much. Ascorbic acid or L-
Preferably, the concentration of sodium ascorbate is about 10 to 30% by weight. As fillers, sodium chloride powder, bodo sugar powder, sodium bicarbonate powder, etc. which are harmless to the human body can be considered. These were mixed with L-ascorbic acid powder and food color blue No. 2 powder and subjected to a long-term storage test. As shown in Comparative Examples 1, 2, and 3 described below, 1
After 5 months, the chromaticity dropped to 10 to 15%.

The present inventor has further studied and found that L-
Either one or both of ascorbic acid powder or L-sodium ascorbate powder, sodium chloride powder, and a mixture of food color blue No. 2 are further mixed with magnesium carbonate powder to obtain food color blue No. 2 Was maintained at about the same level for at least one year (Examples 1 to 4 described later). When calcium carbonate or calcium lactate was used in place of the magnesium carbonate powder, the fading of Food Color Blue No. 2 could not be prevented (Comparative Examples 4 and 6 described later). In addition, even when magnesium carbonate was added in the case where buddo sugar powder or sodium bicarbonate powder was used as an extender, the discoloration of Food Color Blue No. 2 could not be prevented (Comparative Examples 5 and 7 described later).

The treating agent of the present invention can add a suitable amount to detoxify the chlorine-based bleaching and disinfecting agent, but the aqueous solution after detoxifying chlorine with the treating agent based on sodium L-ascorbate. (Treatment liquid) is alkaline, leaving not only a feeling of sliminess on the hands but also unpleasantness, and also causes rough hands and rough skin. Salt, which is a reaction product of hypochlorite and the detoxifying agent of the present invention, is neutral, but commercially available chlorine bleaching and disinfecting agents are used for stabilizing hypochlorite. This is because an alkaline compound is usually added to make the pH more than pH 12 and the pH used is around pH 11, so that the aqueous solution after detoxifying chlorine remains alkaline. In order to improve this, a mixed powder obtained by further adding an edible organic acid powder to a mixed powder containing L-sodium ascorbate powder, sodium chloride powder, food color blue No. 2 powder, and magnesium carbonate powder. do it.

As the edible organic acid, one or more selected from the group consisting of oxalic acid, citric acid, malic acid, tartaric acid and ascorbic acid are suitable. The amount of the edible organic acid powder is 10 to 2% of sodium L-ascorbate.
About 0% by weight is appropriate.

On the other hand, the treatment liquid after detoxifying chlorine with a treatment agent based on ascorbic acid is acidic and does not have a problem of sliminess. In order to solve this problem, a mixed powder obtained by further adding sodium bicarbonate powder to a mixed powder containing L-ascorbic acid powder, sodium chloride powder, food color blue No. 2 powder, and magnesium carbonate powder. And it is sufficient. The amount of the sodium bicarbonate powder to be added is suitably about 30 to 50% by weight of L-ascorbic acid. If a large amount is added, not only the pH of the treatment liquid becomes alkaline side, but also the long-term stability of the dye deteriorates.

As a secondary problem relating to the use of the detoxifying agent of the present invention, the detoxifying treatment of the present invention is carried out after using a chlorine-based bleaching / disinfecting agent on a cloth such as laundry, towel, towel, and towel. If the agent is used too much, the fabric may be colored by the dye being detoxified. In order to prevent this, it is preferable to add a powdered surfactant to the detoxifying agent. Examples of the powdery surfactant include stearyl alcohol (tallow alcohol) 25 mol EO adduct. The amount of the powdered surfactant added is 1 to 2% by weight in the detoxifying agent.
The degree is appropriate.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below with reference to examples, but the present invention is not limited to the following examples and can be carried out in various modes according to the gist of the present invention.

[0016]

Examples 1 to 4 and Comparative Examples 1 to 7 Powdered detoxifying agents having the compositions shown in Table 1 were produced and stored at room temperature for 15 months.
At the time when the diameter exceeded 15 months, a 1% by weight aqueous solution was prepared, and at that time, the color tone of a 1% by weight aqueous solution of a powdered detoxifying agent having the same composition newly prepared and the color tone with a stepwise diluent were compared. The results are shown in Tables 1 and 2. In the evaluation of the fluidity of the powders in Tables 1 and 2, the symbol 〇 indicates that the powder can be easily shaken out of a hole having a diameter of 3 mm, and the symbols 〇 to △ indicate that the powder is slightly hardened but can be broken out by shaking the container. Are not solid but are moist, and the triangles are solid and are moist even if broken.

[0017]

[Table 1]

[0018]

[Table 2]

As is clear from the examples, the detoxifying agent of the present invention shows no change in the chromaticity of Food Dye Blue No. 2 even after one year of diameter, and no change in fluidity and reducibility. I was not able to admit.

[0020]

The chlorine bleaching and disinfecting agent containing hypochlorite as a main component is widely used for business and household use. In addition to this, even during normal use, a chlorine odor remains in the hands, which is unpleasant, and causes rough hands and rough skin. The detoxifying agent of the present invention can be detoxified by adding an appropriate amount even if the amount of the chlorine-based bleaching and disinfecting agent used and the effective chlorine concentration are unknown, and the chlorine odor does not remain in the hands. In addition, the solution after the detoxification treatment may be made neutral to weakly acidic so that the hand does not feel wet.

Claims (3)

[Claims] 1. A mixed powder containing one or both of L-ascorbic acid powder and sodium L-ascorbate powder, sodium chloride powder, food color blue No. 2 powder, and magnesium carbonate powder. Detoxifying agent for chlorine bleaching and disinfectant. 2. 10 to 30% by weight of one or both of L-ascorbic acid powder and sodium L-ascorbate powder, 60% by weight or more of sodium chloride powder, and 0.05 to 0 powder of Food Color Blue No. 2 The detoxifying agent for a chlorine-based bleaching / disinfecting agent according to claim 1, which is a mixed powder containing 0.5% by weight and 0.3 to 3% by weight of a magnesium carbonate powder. 3. The detoxifying agent for a chlorine-based bleaching and disinfecting agent according to claim 1, which comprises a powdery surfactant.