Method for detecting aluminum in 2,2'-methylene-bis(4,6-di-bert-butyl phenol)phosphate

A di-tert-butylphenol and detection method technology, applied in the direction of color/spectral characteristic measurement, etc., can solve the problems of matrix interference and no reports, etc., and achieve the effect of simple detection method, good reproducibility, and increased dilution factor

Active Publication Date: 2012-07-25
ANHUI WAYEE SCI & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also reports in the literature that the graphite furnace atomic absorption method is used to measure aluminum, but due to the interference of the matrix, it is generally necessary to add a matrix modifier
In addition, there is no report on the detection of aluminum in phosphate esters

Method used

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  • Method for detecting aluminum in 2,2'-methylene-bis(4,6-di-bert-butyl phenol)phosphate
  • Method for detecting aluminum in 2,2'-methylene-bis(4,6-di-bert-butyl phenol)phosphate
  • Method for detecting aluminum in 2,2'-methylene-bis(4,6-di-bert-butyl phenol)phosphate

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Embodiment 1

[0029] Embodiment 1: The detection method of aluminum in 2,2'-methylene-bis(4,6-di-tert-butylphenol) phosphate, is characterized in that comprising the following steps:

[0030] The detection method of aluminum in 2,2'-methylene-bis(4,6-di-tert-butylphenol) phosphate, weigh 0.1000g of phosphate in an oven at 75°C for 3h, add 1mL of nitric acid after drying, 0.5 mL ethanol and 0.5mL hydrogen peroxide were digested in a high-pressure digestion tank at 120°C for 2 hours. After the digestion, it was naturally cooled to room temperature, and the high-pressure tank was opened in a fume hood. The phosphate ester in the tank was completely digested, and the solution was clear and transparent dark yellow. Add 1mL of hydrogen peroxide to the liner of the tank, heat on the electric heating plate to drive out the acid, and dilute to 50mL with ultrapure water. Make a sample blank in the same way.

[0031] For the detection method of aluminum in 2,2'-methylene-bis(4,6-di-tert-butylphenol) ...

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Abstract

The invention discloses a method for detecting aluminum in 2,2'-methylene-bis(4,6-di-bert-butyl phenol)phosphate, which mainly comprises the following steps: dissolving the sample, applying onto a graphite tube, preparing a standard solution, and detecting with an instrument. High-purity water is used as a diluter, and no substrate improver or deuterium lamp background correction is needed. The established detection method has the advantages of high safety coefficient and good reproducibility, and is simple to operate.

Description

technical field [0001] The invention relates to a graphite furnace atomic absorption method applied to aluminum content in 2,2'-methylene-bis(4,6-di-tert-butylphenol) phosphate. Background technique [0002] Phosphate ester is a synthetic material prepared by a special catalytic esterification method. One of the synthetic methods uses phosphorus oxychloride as an acylating agent for acylation, hydrolysis, and post-treatment separation and purification. Aluminum trichloride is used as a catalyst in the acylation process. Therefore, by detecting the aluminum content in the finished phosphate ester, the purity of the phosphate ester can be verified from the side. [0003] Regarding the detection of aluminum, nitrous oxide-acetylene flames are used in many literature reports, but the combustion rate of nitrous oxide-acetylene flames is fast, the flame height is high, and the risk factor is large, so it is generally not recommended. There are also reports in the literature that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/33
Inventor 曹文质王国东
Owner ANHUI WAYEE SCI & TECH CO LTD
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