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A method for determining the content of tetrakis hydroxymethyl phosphorus chloride in textiles or foam

A technology of tetrahydroxymethyl phosphorus chloride and textiles, which is applied in the field of analytical chemistry to achieve the effect of rapid and accurate determination

Active Publication Date: 2022-06-21
SGS CSTC STANDARDS TECH SERVICES (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no detection method for the content of tetrakis hydroxymethyl phosphorus chloride in textiles and foam at home and abroad
Tetrahydroxymethylphosphorus chloride itself has a relatively large polarity, good solubility in water, and is almost insoluble in most organic solvents such as toluene and acetone. The conventional flame retardant detection method is obviously not suitable for tetramethylol Detection of Phosphorous Chloride

Method used

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  • A method for determining the content of tetrakis hydroxymethyl phosphorus chloride in textiles or foam
  • A method for determining the content of tetrakis hydroxymethyl phosphorus chloride in textiles or foam
  • A method for determining the content of tetrakis hydroxymethyl phosphorus chloride in textiles or foam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: Determination of tetrahydroxymethyl phosphorus chloride content in cotton filling

[0038] 1. Preparation of sample solution:

[0039] Crush the filling cotton with a pulverizer, and the size of the sample should not exceed 2mm × 2mm × 2mm; mix the pulverized samples, put them in a clean and dry ziplock bag, seal and store them for later use; weigh 0.5g of the sample in Into a 40mL glass screw bottle, add 25mL methanol-water (85:15) solution, seal it, extract it by ultrasonic in a water bath at 60°C for 60min, take 0.5mL of the extract after cooling, add methanol-water (85:15) solution to dilute to 1mL , filtered through a 0.2 μm PTFE membrane for LC-MS analysis.

[0040] 2. Set the instrument parameters:

[0041] a) The liquid chromatography column adopts a ZIC-cHILIC column, with a column length of 15 cm, an inner diameter of 2.1 mm, and a particle size of 3 μm;

[0042] b) The temperature of the liquid chromatography column is set to 30°C;

[0043] ...

Embodiment 2

[0054] Example 2: Determination of Tetrahydroxymethyl Phosphorus Chloride in Cotton Cloth

[0055] 1. Preparation of samples:

[0056] Cut the cotton cloth into pieces with scissors, the size of the sample should not exceed 2mm × 2mm × 2mm, mix well, put it into a clean and dry ziplock bag, and seal it for later use; Weigh 0.5g of the sample into a 40mL glass screw bottle, add 25mL methanol- Water (85:15) solution, sealed and ultrasonically extracted in a 60°C water bath for 60min, cooled and taken 0.5mL of the extract, diluted to 1mL with methanol-water (85:15) solution, filtered through a 0.2μm PTFE membrane, and then used for LC- MS analysis.

[0057] 2. Set the instrument parameters:

[0058] a) The liquid chromatography column adopts a ZIC-cHILIC column, with a column length of 15 cm, an inner diameter of 2.1 mm, and a particle size of 3 μm;

[0059] b) The temperature of the liquid chromatography column is set to 30°C;

[0060] c) Injection volume: 10 μL

[0061] d)...

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Abstract

The invention relates to a method for determining the content of tetrakis hydroxymethyl phosphorus chloride in textiles or foam, comprising the following steps: 1) sample pretreatment: crushing the textile sample or foam sample to a size not exceeding 2×2×2mm , and then mix the pulverized textile or foam samples evenly, put them into a clean and dry ziplock bag, seal them and store them for later use; 2) Extraction of samples: Ultrasonic extraction with 85% methanol-water or 8mmol / L sodium hydroxide solution , diluted with water and mixed; 3) adopt LC-MS method to measure the concentration of tetrakis hydroxymethyl phosphorus chloride in the sample extraction solution; The content of trihydroxymethylphosphorous chloride; the present invention is fast and simple to measure, and can accurately measure the content of tetrahydroxymethylphosphorus chloride in textiles or foam cotton. Problems with the hydroxymethylphosphonium chloride content method.

Description

[Technical field] [0001] The invention belongs to the technical field of analytical chemistry, in particular to a method for determining the content of tetrahydroxymethyl phosphorus chloride in textiles or foam. [Background technique] [0002] In order to meet the needs of social safety in production and life, prevent fires, and protect people's lives and property, flame retardant science and technology came into being. Flame retardant is the application of flame retardant technology in real life. It is a special chemical additive used to improve the combustion performance of flammable and flammable materials. It is widely used in the flame retardant processing of various materials. The material processed by the flame retardant can effectively prevent, delay or terminate the spread of the flame when attacked by an external fire source, so as to achieve the effect of flame retardant. Traditional flame retardants represented by halogenated flame retardants are widely used bec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/06G01N30/88
CPCG01N30/06G01N30/88
Inventor 李东宇王培花冯颖俞安敏刘平年陈志强
Owner SGS CSTC STANDARDS TECH SERVICES (SHANGHAI) CO LTD
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