 Wysłany: Pon 23:09, 03 Sty 2011 Temat postu: Quantitative sizing of water and paraffin oil Dete |
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| Quantitative sizing of water and paraffin oil Detection of
ileTechnology oil pure action, pure vegetable oil,tory burch outlet, paraffin, mineral oil known to contain paraffin oil paraffin oil products known to contain oil a commodity oil 2 medium to clarify the phenomenon of turbidity turbidity turbidity analysis to clarify the clarification there is oil liquid oil-free beads there is no oil oil beads beads beads beads have no oil-based substances in paraffin oil droplet method detection principle is based on plant and animal oils and fats can be saponified in strong alkaline solution, decomposition of compatibility, while the wax material can not, will phase precipitation. KOH is a strong base, in alcohol solution, can form ethanol potassium (CHOK). Fats and oils in an alcohol solution of KOH saponification reaction soon, and the complete saponification, the saponification product of a carboxylic acid potassium and glycerol in alkaline solution dissolves the alcohol, the solution clear and transparent. Paraffin-type material structural stability is not easy to chemical reactions, including saponification reaction does not occur (without ester groups),ugg italia, so the alcohol in the KOH solution is very stable, there is no chemical change, but paraffin material is completely non-polar substances, and poor compatibility of basic alcohol solution, it precipitated phase,belstaff italia, large oil beads floating on the surface, the tiny oil droplets formed in the solution folder turbidity. l ice-zero wave ~ t / cm Figure 1 IR spectra of pure paraffin wax paraffin wax standard samples of test samples listed in Table 3 for the phenomenon of the known specimens are consistent with the fact that the paraffin oil containing the sample was determined there will be turbid solution, the phenomenon of surface with oil beads, paraffin oil sample solution does not contain clear, liquid oil-free beads. Commodity composition of the unknown oil samples have measured results, such as commodity oil 2, solution turbidity, level with oil beads, as confirmed by paraffin oil beads are material, we will be the separation of samples with the column on the separation and purification purified samples of the infrared spectrum shown in Figure 1. Figure 1 shows IR spectra of pure paraffin samples compared to the two peaks is consistent, we can conclude that the unknown sample is paraffin. 3 Conclusions (1) sizing available water content in the drying oil weight loss and azeotropic distillation two methods. Drying method at 105 ℃ of water removed directly, azeotropic distillation with water and toluene distillation separation, comparison, water drying method to facilitate weight loss, better reliability. (2) The sizing composition of paraffin oil in the chemical stability, in strong alkaline solution of alcohol does not occur under the conditions of saponification,tiffany schmuck, immiscible, liquid suspended oil droplets. The general plant and animal oils and fats in strong alkali saponification dissolved in alcohol solution, the solution clear, liquid oil-free beads. Determined by this method,timberland portugal, reliable, easy to operate. |
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