Slow-release formaldehyde-removing gel with color-developing indication function

A formaldehyde gel and color indication technology, which is applied to the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of no slow release and indication functions, frequent activities, low efficiency, etc., and achieve good slowness The function of releasing formaldehyde, the proportion of components is reasonable, and the effect of improving the function of sustained release

Pending Publication Date: 2022-03-01
宁波远大检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing chemical preparation method and carbon adsorption method on the market are to place chemical preparations or activated carbon in the room, rely on natural air flow to make the chemical preparations volatilize to capture formaldehyde or activated carbon to adsorb and decompose formaldehyde...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Weigh the following materials in total weight ratio: 15% sodium chlorite as the main agent, 20% jelly gel as the sustained release agent, 10% sodium chloride as the stabilizer, and 10% as the redox indicator 0.05% methylene blue, 4% citric acid aqueous solution as an activator (the mass fraction of the solute in the citric acid aqueous solution is 5%), and the rest is water. The overall total weight is 160g.

[0024] Dissolve the above main ingredients, slow-release agents, stabilizers, and redox indicators in water, and heat (60°C~70°C) to condense into a gel, which is component A. The activator is the B component. When in use, drop the activator of component B on the gel of component A.

Embodiment 2

[0025] Embodiment two: take the material of following total weight ratio: Potassium chlorite 8% as main agent, carrageenan 25% as slow-release agent, potassium chloride 5% as stabilizer, dichloride as redox indicator 0.2% sodium aniline sulfonate, 8% potassium bisulfate aqueous solution as an activator (the mass fraction of the solute in the potassium hydrogen sulfate aqueous solution is 5%), and the rest is water. The overall total weight is 160g.

[0026] Dissolve the above main ingredients, slow-release agents, stabilizers, and redox indicators in water, and heat (60°C~70°C) to condense into a gel, which is component A. The activator is the B component. When in use, drop the activator of component B on the gel of component A.

Embodiment 3

[0027] Embodiment three: take the material of the following total weight ratio: magnesium chlorite 12% as the main agent, agar 20% as the slow-release agent, magnesium chloride 10% as the stabilizer, ortho dichloride as the oxidation-reduction indicator 0.1% ferrous nitrogen phenanthrene, 6% sodium bisulfate aqueous solution as an activator (the mass fraction of the solute in the sodium bisulfate aqueous solution is 5%), and the rest is water. The overall total weight is 160g.

[0028] Dissolve the above main ingredients, slow-release agents, stabilizers, and redox indicators in water, and heat (60°C~70°C) to condense into a gel, which is component A. The activator is the B component. When in use, drop the activator of component B on the gel of component A.

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PUM

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Abstract

The slow-release formaldehyde-removing gel with the color-developing indication function comprises the following components in percentage by weight: 8-15% of a main agent consisting of one or more of sodium chlorite, potassium chlorite and magnesium chlorite; 15%-25% of a slow release agent composed of one or more of carrageenan, jelly glue, gel and agar; 5%-15% of a stabilizer composed of one or more of sodium chloride, magnesium chloride and potassium chloride; 0.05%-0.2% of a redox indicator composed of one of methylene blue, o-phenanthroline ferrous iron and sodium diphenylaminesulfonate; the main agent, the slow-release agent, the stabilizer and the oxidation-reduction indicator are dissolved in water and then are heated and coagulated into gel, and the component A is formed; 4%-8% of an activating agent composed of an aqueous solution of one or more of sodium hydrogen sulfate, sodium sulfate, potassium hydrogen sulfate, potassium sulfate, citric acid and EDTA (Ethylene Diamine Tetraacetic Acid); the activating agent is a component B; when not in use, the component A and the component B are packaged in an isolated manner.

Description

technical field [0001] The invention belongs to the technical field of formaldehyde removal, and in particular relates to a slow-release formaldehyde-removing gel with a color indicating function. Background technique [0002] Formaldehyde is an organic chemical substance, which is a colorless, irritating and toxic gas. The acute poisoning of formaldehyde is manifested as irritation to the skin and mucous membranes. Inhalation of high concentrations of formaldehyde can lead to symptoms of respiratory irritation, sneezing, coughing with burning sensation in the nose and throat; in addition, it can also induce bronchial asthma, pneumonia, and pulmonary edema. A large amount of formaldehyde intake through the digestive tract at one time can cause symptoms of digestive tract and systemic toxicity, corrosive burns of the mouth, throat and digestive tract, abdominal pain, convulsions, and death. Skin contact with formaldehyde can cause allergic dermatitis, pigmentation, skin nec...

Claims

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Application Information

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IPC IPC(8): B01D53/72B01D53/78
CPCB01D53/72B01D53/78
Inventor 姚科伟钟灿红潘逍宇柯慧敏
Owner 宁波远大检测技术有限公司
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