Supercharge Your Innovation With Domain-Expert AI Agents!

Stable sodium hypochlorite solution and preparation method thereof

A technology of sodium hypochlorite solution and stability, applied in the directions of hypochlorous acid, hypochlorite, etc., can solve problems such as poor stability of sodium hypochlorite solution, and achieve the effects of no potential toxicity problem, convenient use and stable concentration

Inactive Publication Date: 2012-06-20
TIANJIN VOCATIONAL INST
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defect of poor stability of the existing sodium hypochlorite solution, to provide a stable sodium hypochlorite solution and a preparation method thereof, so that its stability can reach more than twelve months

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stable sodium hypochlorite solution and preparation method thereof
  • Stable sodium hypochlorite solution and preparation method thereof
  • Stable sodium hypochlorite solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Amino compounds such as sulfamic acid, urea and glycine were used as alternative stabilizers for sodium hypochlorite solution. Dissolve 9.7g (0.10mol) of sulfamic acid, 6.0g (0.10mol) of urea and 7.7g (0.10mol) of aminoacetic acid in 50ml of deionized water, adjust the pH to 13.5 with 2.0mol / L sodium hydroxide solution, Dilute to 120g with deionized water, add 78.2g (0.10mol) of sodium hypochlorite solution with an available chlorine content of 10% respectively, and measure the available chlorine content in the mixed solution after mixing as shown in Table 1.

[0018] Table 1 The impact of amino compound types on available chlorine in sodium hypochlorite solution

[0019] serial number

[0020] In the above experiments, before and after the mixing of sodium sulfamate solution and sodium hypochlorite solution, the total amount of available chlorine in the solution is almost unchanged, and no obvious chemical reaction phenomenon occurs after mixing, and the char...

Embodiment 2

[0022] Get 71.4g, 147g and 210g of 30% sodium sulfamate solution respectively, add 80g of 30% sodium tripolyphosphate solution respectively, then add 274g (0.70mol) of industrial sodium hypochlorite solution with 10% available chlorine content, and use 50% sodium hydroxide Adjust the alkalinity of the solution, stir to obtain 5.0% available chlorine content, 5.0% sodium tripolyphosphate content, 2.0% free alkali content, and sodium hypochlorite solution sample liquid containing 0.18mol, 0.37mol, and 0.53mol of sodium sulfamate stabilizer. Store it at room temperature of 25°C, regularly take samples to measure the available chlorine content in the solution and calculate the cumulative decline rate of available chlorine in Table 2.

[0023] The influence of table 2 stabilizer addition on the stability of sodium hypochlorite solution

[0024]

[0025] In the above experiments, when the mol ratio of sodium sulfamate / sodium hypochlorite was 0.25, the available chlorine in the so...

Embodiment 3

[0027] In 147g (0.37mol) of 30% sodium sulfamate solution, add 80g of 30% sodium tripolyphosphate solution, then add 250g (0.70mol) of industrial sodium hypochlorite solution with 10% available chlorine content, adjust the solution with 50% sodium hydroxide Alkalinity, stir to obtain available chlorine content 5.0%, sodium tripolyphosphate content 5.0%, free alkali content is respectively 0.5%, 1.0%, 2.0% and 5.0% sodium hypochlorite solution sample solution 500g. Place it at room temperature of 25°C, periodically take samples to measure the available chlorine content of the solution and calculate the cumulative decline rate of available chlorine, as shown in Table 3.

[0028] The influence of table 3 free alkali content on the stability of sodium hypochlorite solution

[0029]

[0030]As seen from the above results, when the solution free alkali content was 0.5%, the stability of the sodium hypochlorite solution was poor; when the solution free alkali content was greater t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a stable sodium hypochlorite solution and a preparation method thereof. The stable sodium hypochlorite solution is characterized in that: amino sulfamic acid, urea or amino acetic acid and sodium tripolyphosphate are commonly used as a stabilizing agent; and in an amino compound stabilizing agent, the mol ratio of an amino group to the sodium hypochlorite is (0.5-1.0):1. The preparation method comprises the following steps of: adding a sodium tripolyphosphate solution with the concentration of 30% into an amino sulfamic acid solution with the concentration of 30%; adding an industrial sodium hypochlorite solution with effective chlorine content of 10% and adjusting the alkalinity with sodium hydroxide with the concentration of 50%; and uniformly agitating to obtain the stable sodium hypochlorite solution with the effective chlorine content of 5.0%, sodium tripolyphosphate content of 5.0% and free alkali content of 0.5-5.0%. In a test for rapidly evaluating the stability, the sodium hypochlorite solution can be stored at a temperature of 54 DEG C for 14 days, the reduction rate of the effective chlorine is 12.6% and the period of validity can be presumptive to twelve months.

Description

technical field [0001] The invention relates to a stable sodium hypochlorite solution and a preparation method thereof, in particular to a stable sodium hypochlorite solution using amino compounds and sodium tripolyphosphate as stabilizers and a preparation method thereof, belonging to the fine chemical industry field. Background technique [0002] Sodium hypochlorite solution is widely used in sanitation and epidemic prevention, sterilization and disinfection of medical treatment and daily life, bleaching in textile and printing and dyeing industries, and oxidant in chemical industry due to its low price, strong bactericidal ability and easy production. Sodium hypochlorite solution itself has poor stability, which brings great inconvenience to its production, transportation, storage, sale and use. [0003] There are many factors affecting the stability of sodium hypochlorite solution, mainly including natural decomposition caused by light, ultraviolet rays and high temperat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B11/06
Inventor 李建生刘炳光苏超翟梦雅朱宝辉周琪马怡君
Owner TIANJIN VOCATIONAL INST
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com