Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for detecting tetramethyl succinonitrile and application thereof

A technology of tetramethylsuccinonitrile and standard solution, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of strong toxicity, central nervous system damage, etc., and achieve the effect of good applicability, simple operation, and good linear relationship

Inactive Publication Date: 2014-06-18
CHINA NAT BLUESTAR (GRP) CO LTD
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simultaneously, tetramethylsuccinonitrile is very toxic, has serious damage to central nervous system, and its IDLH value (immediately dangerous concentration to life or health) is 5ppm, so it needs to be strictly monitored
Yet existing patent and literature also do not have the report about tetramethylsuccinonitrile detection method, especially tetramethylsuccinonitrile detection method in aqueous phase

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
  • Method for detecting tetramethyl succinonitrile and application thereof
  • Method for detecting tetramethyl succinonitrile and application thereof
  • Method for detecting tetramethyl succinonitrile and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The Tetramethylsuccinonitrile content analysis of certain rectifying experiment gained cut of embodiment 1

[0030] (1) Tetramethylsuccinonitrile qualitative analysis:

[0031] 3 mg of tetramethylsuccinonitrile solid was placed in a headspace vial for gas chromatographic analysis. According to the gas chromatogram (such as figure 1 Shown), determine that the retention time of tetramethylsuccinonitrile is 10.1min.

[0032] (2) prepare tetramethylsuccinonitrile standard solution, and establish corresponding standard curve:

[0033] Take 10mg of tetramethylsuccinonitrile and dissolve it with methanol, then dilute to volume with water, prepare a 100mg / L aqueous solution (standard solution stock solution), and dilute step by step to obtain a concentration of 10, 20, 40, 80, 100mg / L standard solution. Carry out gas chromatographic analysis to the standard solution respectively, and obtain the gas chromatogram of the standard solution.

[0034] According to the gas chroma...

Embodiment 2

[0039] In this embodiment, sample 2 is detected, and the experimental steps are the same as those in Example 1, except that the gas chromatography conditions are as follows: a) The chromatographic column is a DB-FFAP capillary column with a specification of 60m×0.32mm×0.5 μm; b) Sampling was performed with a headspace sampling system under the conditions that the heating temperature of the sample bottle was 100°C, the loop temperature was 150°C, and the transfer line temperature was 200°C; c) the gas chromatography inlet temperature was 250°C, and the sampling mode was split flow, The split ratio is 20:1; d) The temperature of the chromatographic column is programmed, the initial temperature is 160°C, and it is kept for 12 minutes, and then the temperature is raised to 200°C at 20°C / min, and kept for 5 minutes; e) The detector is FID hydrogen flame ionization detection The temperature is 200°C; f) The carrier gas is high-purity nitrogen. The experimental results adopt the exte...

Embodiment 3

[0041] In this example, sample 3 is detected, and the experimental procedure is the same as that of Example 1, except that the gas chromatography conditions are as follows: a) the chromatographic column is a DB-FFAP capillary column, and the specification is 60m×0.32mm×0.5 μm; b) Sampling is carried out with the headspace sampling system, the conditions are that the heating temperature of the sample bottle is 70°C, the loop temperature is 120°C, and the transfer line temperature is 150°C; c) the gas chromatography inlet temperature is 200°C, and the injection mode is split, The split ratio is 10:1; d) The temperature of the chromatographic column is programmed, the initial temperature is 140°C, and it is kept for 12 minutes, and then the temperature is raised to 200°C at 5°C / min, and kept for 5 minutes; e) The detector is FID hydrogen flame ionization detection The temperature is 250°C; f) The carrier gas is high-purity nitrogen. The experimental results adopt the external sta...

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 relates to a method for detecting tetramethyl succinonitrile and an application thereof. The method is implemented by a gas chromatograph and comprises the following steps of: performing qualitative analysis on tetramethyl succinonitrile, preparing a tetramethyl succinonitrile standard solution and establishing a standard curve, and detecting the content of tetramethyl succinonitrile in a to-be-tested sample. The method can be used for detecting tetramethyl succinonitrile in a water phase, can detect the decomposition reaction byproduct of azodiisobutyronitrile with accuracy, sensitivity and high efficiency, and is easy to operate.

Description

technical field [0001] The invention relates to a method for detecting by-products of a decomposition reaction and its application, in particular to a method for detecting tetramethylsuccinonitrile and its application. Background technique [0002] Azobisisobutyronitrile (AIBN) is a commonly used free radical initiator, which is widely used in the production process of many chemical raw materials and products. When AIBN is decomposed to generate free radicals to initiate polymerization, two molecular couplings will also occur to generate tetramethylsuccinonitrile (TMSN). The long-term enrichment of tetramethylsuccinonitrile will affect the quality of the product. In the production process of industrial products using azobisisobutyronitrile as an initiator, it is very necessary to detect the content of tetramethylsuccinonitrile. Simultaneously, tetramethylsuccinonitrile is very toxic, has serious damage to central nervous system, and its IDLH value (immediately dangerous con...

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 Patents(China)
IPC IPC(8): G01N30/02
Inventor 魏婷婷张雪芹胡衍平李瑞亢
Owner CHINA NAT BLUESTAR (GRP) CO LTD