JPH1157686A - Treating agent for making chlorine-bleaching-and-sterilizing-agent harmless - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive a treating agent for making a used chlorine-bleaching-and- sterilizing-agent harmless by addition in proper quantity with neither too much nor too little without a slimy feel on a hand after use. SOLUTION: The aqueous solution is stable for L-ascorbic acid and a reducing agent but unstable for an oxidizing agent and includes coloring matter. Proper concentration of the L-ascorbic acid is in the range of about 10-15 wt.% and proper concentration of the coloring matter is in the range of about 0.01-0.03 wt.% Red 401, yellow 203, blue 2, yellow 407, orange 402, black 401, and red 504 and the like are exemplified as the coloring matter.

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 and slimy feeling remain on the hands, which is not only uncomfortable, but also causes rough hands and rough skin.

[0003] L-ascorbic acid, also known as vitamin C, is also a reducing agent, and it is known that the reducing agent reacts with hypochlorite to consume chlorine and ionize it to render it harmless. However, when using this reaction to detoxify chlorine-based bleaching and disinfecting agents, it is difficult for housewives especially to use L-ascorbic acid without excess or deficiency. One of the reasons is that chlorine bleaching and disinfecting agents are used in measured amounts without measuring, and another reason is that hypochlorite decomposes over time and chlorine bleaching.・ The effective chlorine concentration in the disinfectant decreases. For example, available chlorine in commercially available chlorine-based bleaching and disinfecting agents is 5% or more at the time of shipment, but may be about 2% one year later. It is difficult to add an appropriate amount of L-ascorbic acid without excess or deficiency while the amount of the chlorine bleaching and disinfectant used and the effective chlorine concentration are unknown.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an appropriate amount of chlorine-free bleaching and disinfecting agent even if the amount and available chlorine concentration are unknown. It is to provide a processing agent which can be used. It is a further object of the present invention to provide a treating agent which does not leave a chlorine odor or a slimy feeling on hands after use.

[0005]

The detoxifying agent for the chlorine-based bleaching and disinfecting agent according to the present invention is an aqueous solution containing a dye which is stable to L-ascorbic acid and a reducing agent and unstable to an oxidizing agent. There is a feature.

When this treating agent is added to an aqueous solution containing a chlorine-based bleaching and disinfecting agent, the hypochlorite in the bleaching and disinfecting agent reacts with L-ascorbic acid in the treating agent and is rendered harmless. You.

When hypochlorite remains due to an insufficient amount of the treatment agent, the pigment 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). According to the examples, clear coloring can be recognized when the amount of the detoxifying agent used is 1 to 1.1 times the theoretical amount.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS L-Ascorbic acid, known as vitamin C, is a substance commonly used for pharmaceuticals, food additives, quasi-drugs or cosmetics, and its safety is a problem. Absent. Also, L-ascorbic acid is said to have a beautiful skin effect, and is also preferable from that point. The concentration of L-ascorbic acid in the treating agent is not particularly limited, but a suitable product form is about 10 to 15% by weight.

[0009] As the dye stable to the reducing agent and unstable to the oxidizing agent, it is preferable to select from among those approved for food, pharmaceuticals, quasi-drugs, and cosmetics. No. 203, Blue No. 2, Yellow No. 407, Orange No. 402, Black No. 401, Red No. 504 and the like. The concentration of the dye is suitably about 0.01 to 0.03% by weight.

Hereinafter, the present invention will be described specifically with reference to examples. However, 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.

[0011]

Examples 1 to 10 10 ml of a commercially available chlorine-based bleaching and disinfecting agent containing about 28% by weight of sodium hypochlorite and 1 to 2% by weight of a surfactant and having a pH of about 12.5 ( 10.
65 g) was dissolved in 1000 ml of water (100 times) and a detoxifying agent having the composition shown in Table 1 (10.0% by weight of L-ascorbic acid; 0.02% by weight of pigment) was colored. It was added until. The amount used until coloring was observed was measured and is shown in Table 1 as a magnification relative to the theoretical amount (the amount required to completely decompose sodium hypochlorite). The theoretical amount was measured using the commercially available chlorine bleaching and disinfectant 5m used for the pigment evaluation.
was collected in a 300 ml stoppered Erlenmeyer flask with a whole pipette, and 50 ml of water, 2 g of potassium iodide KI powder and 1 g of potassium iodide were added.
5 ml of a normal H ₂ SO ₄ aqueous solution was added, and the mixture was allowed to stand for 2 minutes. The released I ₂ was titrated with 10.0% by weight of L-ascorbic acid, and the required amount (ml) was doubled to obtain a theoretical amount. .

[0012]

[Table 1]

As is clear from Table 1, if the detoxifying agent of the present invention is used, coloring is confirmed even if the amount of chlorine-based bleaching and disinfecting agent used and the effective chlorine concentration are unknown. The chlorine bleaching and disinfecting agent can be rendered harmless by adding an appropriate amount by a simple operation.

[0014] Commercially available chlorine bleaching and disinfecting agents usually contain an alkaline compound for stabilization of hypochlorite and have a pH =
12 or more alkaline, pH =
Since it is around 11, a slimy feeling remains on the hands after use, which is not only uncomfortable, but also causes rough hands and rough skin. L-ascorbic acid used as a detoxifying agent in the present invention is an acidic substance, and a slight amount of excess L-ascorbic acid remains in the liquid after the detoxifying treatment. Neutral to weakly acidic, leaving no slimy feeling on hands.

Chlorine bleaching mainly composed of hypochlorite
It is well known that adding a strong acid such as hydrochloric acid to a disinfectant generates chlorine and is dangerous, and it is obliged to label the chlorine-based bleaching and disinfectant packaging. However, the present inventors have confirmed that chlorine gas is not generated when an appropriate amount of L-ascorbic acid is mixed with a chlorine-based bleaching and disinfecting agent.

As a secondary problem related 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 and disinfecting agent on cloth such as laundry, towels, towels, and towels. If the agent is used too much, the fabric may be colored by the dye being detoxified. To prevent this, a surfactant may be added to the detoxifying agent. As the type of the surfactant, any of a nonionic surfactant, an anionic surfactant, and an amphoteric surfactant may be used. Examples of the nonionic surfactant include polyoxyethylene alkyl ethers having 7 or more moles of EO (ethylene oxide) added, polyoxyethylene alkylphenyl ethers, and polyalkylene glycols having an average molecular weight of 400 to 100,000. Examples of the anionic surfactant include higher alcohol sulfates and alkyl ether sulfates. Examples of the amphoteric surfactant include a betaine-based amphoteric surfactant. One or more of these are used in combination. The appropriate amount of the surfactant added is about 1 to 2% by weight in the detoxifying agent.

[0017]

EFFECTS OF THE INVENTION Chlorine bleaching and disinfecting agents containing hypochlorite as a main component are widely used for business and household use. Not only that, the chlorine odor remains in the hands during normal use, which is uncomfortable, and also 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 becomes neutral to weakly acidic, and the hand does not remain slimy.

Claims (3)

[Claims] 1. A detoxifying agent for chlorine-based bleaching and disinfecting agents, which is an aqueous solution containing a dye which is stable to L-ascorbic acid and a reducing agent and unstable to an oxidizing agent. 2. Dyes which are stable in a reducing agent and unstable in an oxidizing agent are red 401, yellow 203, blue 2 and yellow 40.
The detoxifying agent for a chlorine-based bleaching / disinfecting agent according to claim 1, wherein the agent is at least one selected from the group consisting of No. 7, orange 402, black 401 and red 504. 3. The detoxifying agent for a chlorine-based bleaching / disinfecting agent according to claim 1, comprising at least one surfactant.