Evolution of sulfur during fast pyrolysis of sulfonated Kraft lignin was written by Han, Tong;Sophonrat, Nanta;Evangelopoulos, Panagiotis;Persson, Henry;Yang, Weihong;Joensson, Paer. And the article was included in Journal of Analytical and Applied Pyrolysis in 2018.Safety of 4-Hydroxy-3-methoxyphenethanol The following contents are mentioned in the article:
Sulfonated Kraft lignin, the most available com. lignin of today, has high sulfur content due to the extraction and the subsequent sulfonation processes. In this work, the evolution of sulfur during fast pyrolysis of sulfonated Kraft lignin has been studied. Fast Pyrolysis experiments have been done using Py-GC/MS. It is found that main sulfur-containing products in the pyrolytic vapors are present as the following small mol. compounds: H2S, SO2, CH3SH, CH3SCH3, and CH3SSCH3. This indicates that sulfur-containing radicals preferentially combine with the other small radicals such as ·H and ·CH3 during fast pyrolysis process. Sulfur is suggested to be mainly present as sulfite (-SO–3) and sulfide (-S-) in the sulfonated Kraft lignin. Sulfite that is incorporated into lignin during the sulfonation process mainly result in the formation of SO2. The nature of the sulfur links created during the Kraft pulping process is difficult to determine, but they are supposed to mainly exist in form of sulfide (-S-) bonds, which lead to the formation of H2S, CH3SH, CH3SCH3 and CH3SSCH3. This study involved multiple reactions and reactants, such as 4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1Safety of 4-Hydroxy-3-methoxyphenethanol).
4-Hydroxy-3-methoxyphenethanol (cas: 2380-78-1) belongs to ethers. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Safety of 4-Hydroxy-3-methoxyphenethanol
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem