Page 10 - Microsoft Word - Methyl Ester Sulfonate Products 5th Cesio v19,R1.doc

The same factors that impact digested MESA color also effect the color of the final product.
Additional factors affecting the product color are the level of bleaching agent (hydrogen
peroxide preferred) addition, the level of methanol addition, the bleaching temperature and
time, the neutralization temperature, and the dryer process temperatures. All of these process
factors are well controlled in the technology available today. Figure 4 is a plot of the IV of
the starting ME versus final product color for the six MES examples. The data shown in
Figure 4 (MES product) shows more variability compared to the data shown in Figure 3
(digested MESA), this is due to the additional factors affecting the color of the MES product.
Still the overall trend suggests that higher IV is deleterious to final product color.

Figure 4: Effect of Iodine Value on Stripped / Dried MES Color

500

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Klett Color, 5% active 300

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0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
Iodine Value

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