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Lunan Chemical produces acetic anhydride superior grade
Time of Update: 2022-09-20
On September 6, Shandong Energy Group Lunan Chemical Company's high-quality acetic anhydride device produced excellent grade acetic anhydride products, and its potassium permanganate index, color and purity were better than those of the original carbonylated acetic anhydride products, reaching the design value.
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After the cost rises, the acetic anhydride market continues to rise
Time of Update: 2022-04-03
According to the data monitoring of the business agency, the price of acetic anhydride fluctuated and rose in October, and the acetic anhydride market continued its upward trend .
In October, the price of acetic anhydride fell first and then rose.
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Industrial Acetic Anhydride (Appendix B)
Time of Update: 2021-11-17
Appendix B(Standard appendix)Determination of Acetic Anhydride Content—Gas ChromatographySummary of Method B1The components in industrial acetic anhydride are separated on Apiezon M/graphitized carbon black column, detected by thermal conductivity detector, and quantified by normalization method .
3 Carrier: Graphitized carbon black (STH-2), pore diameter 0.
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Industrial Acetic Anhydride (Appendix C)
Time of Update: 2021-11-17
Appendix C(Standard appendix)Determination of iron content-atomic absorption spectrometryC1 method summaryAfter the sample is evaporated, it is prepared into a solution of appropriate concentration, sprayed in an air-acetylene flame, with an iron hollow cathode lamp as the light source, and the absorbance of the sample is measured at a wavelength of 248.
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Industrial Acetic Anhydride (2)
Time of Update: 2021-11-17
Back titration with hydrochloric acid standard titration solution to determine the amount of sodium hydroxide consumed by acetic acid .
5mL phenolphthalein indicator solution, and titrate the excess sodium hydroxide with a standard titration bath of hydrochloric acid until the pink color just disappears .
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Industrial Acetic Anhydride (Appendix A)
Time of Update: 2021-11-17
Use a spectrophotometer or a colorimeter to determine and calculate the yellowness index of the sample, which can be found from the standard curve of the yellowness of the standard colorimetric solution-platinum-cobalt chromaticity number The color number of the sample is expressed as platinum-diamond color number .
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Industrial Acetic Anhydride (3)
Time of Update: 2021-11-17
5. 6 Sampling of industrial acetic anhydride shall be carried out in accordance with the provisions of GB/T6678 and GB/T6680 .
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Industrial Acetic Anhydride (1)
Time of Update: 2021-11-17
09 (according to the 1997 international relative atomic mass)2 reference standardsThe provisions contained in the following standards constitute the provisions of this standard through quotation in this standard .
3. 2 The quality of industrial acetic anhydride should meet the requirements of Table 1 .
