Effect of heavy metal residues in mechanical pulp on color reversion was written by Park, Je-Seung;Yoon, Byung-Ho. And the article was included in Palpu, Chongi Gisul in 1995.COA of Formula: C11H16O3 This article mentions the following:
The amount of heavy metal, i.e., Cu, Fe, or Mn, removed by the chelating agent used in the pretreatment for H2O2 bleaching was investigated, and the effect of heavy metal and lignin (I) model added to bleached thermomech. pulp (BTMP) and filter paper followed by photoirradiation on discoloration was examined Treatment with DTPA showed the most efficient chelating effect among 3 chelating agents, i.e., EDTA, DTPA, and STPP, which were added to unbleached TMP. Much of the Fe remained after chelation, but Mn was easily removed. The heavy metal added artificially to BTMP showed a decrease of brightness with increasing irradiation time. The formation of a complex between I and Fe conspicuously decreased brightness. The successive doping of Fe and 3,4-dihydroxy benzaldehyde among combinations of heavy metals and I models added artificially to BTMP showed a remarkable drop in brightness. This was caused by the easy formation of a complex between the heavy metal and I having neighboring OH groups. When the heavy metal and I model were artificially, resp. or together, added to filter paper, even filter paper treated with only Fe decreased in brightness. This was caused by the oxidation of cellulose itself and the formation of a little complex between the heavy metal and cellulose. In the experiment, the researchers used many compounds, for example, 3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3COA of Formula: C11H16O3).
3-(3,4-Dimethoxyphenyl)propan-1-ol (cas: 3929-47-3) belongs to ethers. Of all the functional groups, ethers are the least reactive ones. Ether bonds are quite stable towards bases, oxidizing agents and reducing agents. Ethyl ether is an excellent solvent for extractions and for a wide variety of chemical reactions. It is also used as a volatile starting fluid for diesel engines and gasoline engines in cold weather. Dimethyl ether is used as a spray propellant and refrigerant. Methyl t-butyl ether (MTBE) is a gasoline additive that boosts the octane number and reduces the amount of nitrogen-oxide pollutants in the exhaust. The ethers of ethylene glycol are used as solvents and plasticizers.COA of Formula: C11H16O3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem