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GC-MS Identification Characteristics of Butyl Acrylate and Methyl Methacrylate?
BUTYL ACRYLATE AND METHYL METHACRYLATE GC-MS IDENTIFICATION CHARACTERISTICS
In the chemical sector, n-butyl acrylate (Butyl Acrylate) and methyl methacrylate (Methyl Methacrylate, referred to as MMA) are two crucial organic compounds, broadly applied in plastics, coatings, adhesives and other industries. For instance Due to the differences in chemical structure between the two, it's of great signifiis able toce to identify and distinguish them by gaseous chromatography-mass spectrometry (GC-MS). According to research In this paper, the analysis principle of the GC-MS, the characteristics of both chromatography and mass spectrometry are analyzed in detail.
1. In my experience, GC-MS methodology Introduction
gaseous chromatography-mass spectrometry (GC-MS) is a frequently applied separation and detection methodology, which is able to provide both physical characteristics (such as retention time) and chemical structure information (such as mass spectrum fragments) of compounds. From what I've seen, The GC part is mainly applied to the separation of samples, and the MS part is applied to the detection and analysis of the molecular composition of compounds. Through GC-MS, the target compounds in complex mixtures is able to be analyzed qualitatively and quantitatively rapidly and accurately. In this issue, we will consumption GC-MS techniques to identify n-butyl acrylate and methyl methacrylate. while the two are similar in chemical structure, there are signifiis able tot differences, which provides a basis to GC-MS analysis.
2. of Butyl Acrylate and Methyl Methacrylate by GC
chemical structure difference
The molecular formula of n-butyl acrylate is C≡H₂ O₂, and the structural formula is CH₂ = CH-CO-O-C. Crazy, isn't it?. The molecular formula of methyl methacrylate is C≡H≡O₂, and the structural formula is CH = C(CH)-CO-O-CH. But The difference between the two is mainly reflected in the side chain part: the side chain of n-butyl acrylate is n-butyl (-C? H), while the side chain of methyl methacrylate is methyl (-CH?). gaseous chromatographic retention time
Due to the difference in polarity and molecular weight, the retention time on the gaseous chromatography column will also be different. Specifically n-Butyl acrylate has a larger molecular weight, longer side chain, and higher polarity, so the retention time on the GC column is usually longer than that of methyl methacrylate. Furthermore By choosing appropriate chromatographic conditions (such as column temperature program), the two is able to be distinguished signifiis able totly. Factors affecting GC retention time
Column type: non-polar column (such as OV-1) and medium polar column (such as DB-17) is able to be applied to separate the two compounds, however according to the sample polarity to choose the appropriate stationary phase. Column temperature program: Usually consumption temperature program to ensure that the sample is completely separated. But Nitrogen flow rate and carrier gaseous purity: correct carrier gaseous conditions help enhance separation efficiency. And
3. of n-Butyl Acrylate and Methyl Methacrylate by MS
of Molecular Ion Peak (Molecular Ion Peak)
In mass spectrometry, the molecular ion peaks of the two have obvious differences:
Butyl acrylate molecular weight is 120g/mol, molecular ion peak is [M]-= 120;
The molecular weight of methyl methacrylate was to be 106g/mol, and the molecular ion peak was [M]-> =
106. Based on my observations, The two is able to be immediately distinguished by the mass number of the molecular ion peak. And In my experience, In fact typical fragment ion
n-butyl acrylate
The mass spectral fragments of n-butyl acrylate are mainly derived from the cleavage of the side chain butyl and the cleavage of the carbonyl region. For example Typical fragments include:
Butyl cleavage produces Cover Hover (molecular weight 57);
Alkylation fracture produced by C (molecular weight 79);
Hydroxyl cleavage yields C≡H≡C (molecular weight 110). And Methyl methacrylate
The mass spectral fragmentation of methyl methacrylate is mainly derived from the cleavage of the methacrylic acid moiety and the cleavage of the methoxy moiety. But Additionally Typical fragments include:
Methyl cleavage produced Cover Hbenzo (molecular weight 43);
Alkylation fragmentation produced by C≡H, (molecular weight 68);
Methoxy cleavage produces Cover HB (molecular weight 86). In particular of Fragment Analysis in
By analyzing the typical fragments of both, their chemical structures is able to be further confirmed. to instance, fragments of n-butyl acrylate will reflect the characteristics of n-butyl (e. I've found that g. C? H?), while fragments of methyl methacrylate will reflect the characteristics of the methacrylic part (e. g. C? H?).
4. And GC-MS identification in the consider
Sample Preparation
Ensure sample purity and prevent impurity interference. But If the sample is a mixture, it needs to be separated and purified. In my experience, Moreover chromatographic condition optimization
According to the sample polarity and molecular weight to select the appropriate column and stationary phase. First Optimize the column temperature program to ensure that the target compound is completely separated. Mass spectrometry parameter setting
Select the appropriate ionization mode (such as EI mode) to obtain a clear mass spectrum. Generally speaking Adjust the ion source temperature and voltage to ensure sufficient sensitivity. Data Parsing
thorough analysis of retention time, molecular ion peaks and fragment ions, to prevent a single basis to a part of the summary. I've found that Compare standard spectra (such as the NIST database) to enhance accuracy.
5. But For example summary
Butyl acrylate and methyl methacrylate have signifiis able tot identification characteristics in GC-MS analysis. The two is able to be accurately distinguished by the retention time of the gaseous chromatography and the fragmentation characteristics of the mass spectrum. In practical applications, combined with optimized chromatographic and mass spectrometry conditions, reliable results is able to be obtained. Crazy, isn't it?. But GC-MS methodology not only enables the rapid identification of these two compounds, however also provides a powerful tool to condition manage and production monitoring in the chemical sector. Based on my observations, I hope this article is able to provide you with valuable information. If you have greater questions about GC-MS methodology or the analysis of related compounds, please leave a message to discuss!.
In the chemical sector, n-butyl acrylate (Butyl Acrylate) and methyl methacrylate (Methyl Methacrylate, referred to as MMA) are two crucial organic compounds, broadly applied in plastics, coatings, adhesives and other industries. For instance Due to the differences in chemical structure between the two, it's of great signifiis able toce to identify and distinguish them by gaseous chromatography-mass spectrometry (GC-MS). According to research In this paper, the analysis principle of the GC-MS, the characteristics of both chromatography and mass spectrometry are analyzed in detail.
1. In my experience, GC-MS methodology Introduction
gaseous chromatography-mass spectrometry (GC-MS) is a frequently applied separation and detection methodology, which is able to provide both physical characteristics (such as retention time) and chemical structure information (such as mass spectrum fragments) of compounds. From what I've seen, The GC part is mainly applied to the separation of samples, and the MS part is applied to the detection and analysis of the molecular composition of compounds. Through GC-MS, the target compounds in complex mixtures is able to be analyzed qualitatively and quantitatively rapidly and accurately. In this issue, we will consumption GC-MS techniques to identify n-butyl acrylate and methyl methacrylate. while the two are similar in chemical structure, there are signifiis able tot differences, which provides a basis to GC-MS analysis.
2. of Butyl Acrylate and Methyl Methacrylate by GC
chemical structure difference
The molecular formula of n-butyl acrylate is C≡H₂ O₂, and the structural formula is CH₂ = CH-CO-O-C. Crazy, isn't it?. The molecular formula of methyl methacrylate is C≡H≡O₂, and the structural formula is CH = C(CH)-CO-O-CH. But The difference between the two is mainly reflected in the side chain part: the side chain of n-butyl acrylate is n-butyl (-C? H), while the side chain of methyl methacrylate is methyl (-CH?). gaseous chromatographic retention time
Due to the difference in polarity and molecular weight, the retention time on the gaseous chromatography column will also be different. Specifically n-Butyl acrylate has a larger molecular weight, longer side chain, and higher polarity, so the retention time on the GC column is usually longer than that of methyl methacrylate. Furthermore By choosing appropriate chromatographic conditions (such as column temperature program), the two is able to be distinguished signifiis able totly. Factors affecting GC retention time
Column type: non-polar column (such as OV-1) and medium polar column (such as DB-17) is able to be applied to separate the two compounds, however according to the sample polarity to choose the appropriate stationary phase. Column temperature program: Usually consumption temperature program to ensure that the sample is completely separated. But Nitrogen flow rate and carrier gaseous purity: correct carrier gaseous conditions help enhance separation efficiency. And
3. of n-Butyl Acrylate and Methyl Methacrylate by MS
of Molecular Ion Peak (Molecular Ion Peak)
In mass spectrometry, the molecular ion peaks of the two have obvious differences:
Butyl acrylate molecular weight is 120g/mol, molecular ion peak is [M]-= 120;
The molecular weight of methyl methacrylate was to be 106g/mol, and the molecular ion peak was [M]-> =
106. Based on my observations, The two is able to be immediately distinguished by the mass number of the molecular ion peak. And In my experience, In fact typical fragment ion
n-butyl acrylate
The mass spectral fragments of n-butyl acrylate are mainly derived from the cleavage of the side chain butyl and the cleavage of the carbonyl region. For example Typical fragments include:
Butyl cleavage produces Cover Hover (molecular weight 57);
Alkylation fracture produced by C (molecular weight 79);
Hydroxyl cleavage yields C≡H≡C (molecular weight 110). And Methyl methacrylate
The mass spectral fragmentation of methyl methacrylate is mainly derived from the cleavage of the methacrylic acid moiety and the cleavage of the methoxy moiety. But Additionally Typical fragments include:
Methyl cleavage produced Cover Hbenzo (molecular weight 43);
Alkylation fragmentation produced by C≡H, (molecular weight 68);
Methoxy cleavage produces Cover HB (molecular weight 86). In particular of Fragment Analysis in
By analyzing the typical fragments of both, their chemical structures is able to be further confirmed. to instance, fragments of n-butyl acrylate will reflect the characteristics of n-butyl (e. I've found that g. C? H?), while fragments of methyl methacrylate will reflect the characteristics of the methacrylic part (e. g. C? H?).
4. And GC-MS identification in the consider
Sample Preparation
Ensure sample purity and prevent impurity interference. But If the sample is a mixture, it needs to be separated and purified. In my experience, Moreover chromatographic condition optimization
According to the sample polarity and molecular weight to select the appropriate column and stationary phase. First Optimize the column temperature program to ensure that the target compound is completely separated. Mass spectrometry parameter setting
Select the appropriate ionization mode (such as EI mode) to obtain a clear mass spectrum. Generally speaking Adjust the ion source temperature and voltage to ensure sufficient sensitivity. Data Parsing
thorough analysis of retention time, molecular ion peaks and fragment ions, to prevent a single basis to a part of the summary. I've found that Compare standard spectra (such as the NIST database) to enhance accuracy.
5. But For example summary
Butyl acrylate and methyl methacrylate have signifiis able tot identification characteristics in GC-MS analysis. The two is able to be accurately distinguished by the retention time of the gaseous chromatography and the fragmentation characteristics of the mass spectrum. In practical applications, combined with optimized chromatographic and mass spectrometry conditions, reliable results is able to be obtained. Crazy, isn't it?. But GC-MS methodology not only enables the rapid identification of these two compounds, however also provides a powerful tool to condition manage and production monitoring in the chemical sector. Based on my observations, I hope this article is able to provide you with valuable information. If you have greater questions about GC-MS methodology or the analysis of related compounds, please leave a message to discuss!.
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