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Issue 1, 2016 - "New Technology for Catalytic Distillation of Methanol to Dimethyl Ether" passed the scientific and technological achievement appraisal
Time of Update: 2022-11-14
It solves the problems of long process flow of traditional gas phase method, high reaction temperature, high energy consumption, methanol raw materials need to be gasified, low conversion rate, methanol needs to be refined and recovered, and dimethyl ether products need to be refined.
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Determination of diphenyl ether herbicide residues in grains and oilseeds by gas chromatography/mass spectrometry (1)
Time of Update: 2022-08-19
diphenyl ether2 Method summaryThe samples were extracted with acetonitrile, cleaned up with Florisil silica solid phase extraction column, determined by gas chromatography/mass spectrometer, and quantified by external standard method .
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Dimethyl ether for vehicle fuel (1)
Time of Update: 2021-11-28
1 ScopeThis standard specifies the requirements, test methods, inspection rules and signs, packaging, transportation, storage and safety of dimethyl ether for vehicle fuel .
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Thermal oil-400 (biphenyl-diphenyl ether mixture) (1)
Time of Update: 2021-10-15
1 Subject content and scope of applicationThis standard specifies the technical requirements for thermal oil 400 (biphenyl-diphenyl ether mixture) .
3. 2 Heat transfer oil-400 (biphenyl-diphenyl ether mixture) should meet the requirements of the following table:
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Industrial Chloromethyl Methyl Ether (1)
Time of Update: 2021-10-15
1 Subject content and scope of applicationThis standard specifies the technical requirements, test methods, inspection rules and signs, packaging, transportation and storage of industrial chloromethyl methyl ether .
This standard applies to chloromethyl methyl ether obtained by passing hydrogen chloride into methanol and formaldehyde solution .
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Propylene glycol methyl ether acetate for industrial use (1)
Time of Update: 2021-09-26
1 ScopeThis standard specifies the technical requirements, test methods, inspection rules and signs, packaging, transportation, storage and safety of industrial propylene glycol methyl ether acetate .
For undated reference documents, the latest version is applicable to this standard .
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Propylene glycol methyl ether for industrial use (1)
Time of Update: 2021-09-26
2. 1 Method summaryUsing gas chromatography, under selected working conditions, the sample is vaporized and separated by capillary color harmonic column, detected by flame ionization detector, quantified by area normalization method, and subtracted the water content to obtain propylene glycol methyl ether And the content of 2-methoxy-1-propanol .
