ESTER COLOR
CADSDH1W TUMBLE? CA1LTHE TROUBLE SB0OTEB& Our star Trouble Shooter, sodium borohydride, can substantially and often dramatically reduce color in esters and plasticizers, at very low cost. It can work effectively at three stages in the esterification process: in virgin alcohol to stabilize quality; in recycled alcohol to reduce oxidized impurities and improve the quality; and in thefinishedester to remove unwanted color. With the many variables in both color forming impurities and in the esterification reaction itself, we can't send in the Trouble Shooter alone. Our expanded technical trouble shooting team, armed with solid lab data and in-the-field experience, are ready to
tackle your toughest color problems, no matter how complex. Let us work with you. In most cases we can use sodium borohydride to effectively: • Lower ester color by eliminating color causing impurities. • Simplify processing by eliminating troublesome and expensive post treatment. • Reduce manufacturing costs by 1) upgrading the quality ofrecycle alcohol, 2) providing insurance against color degradation and 3) enabling you to select a catalyst and reaction condition to maximize output, rather than minimize ester color.
Don't let troublesome color forming impurities upset your product schedules and increase your manufacturing costs for plasticizer or other ester products. Send for our free technical booklet, Ester Improvement with Sodium Borohydride: or for immediate action on your specific color problem, call Ken Herman at (617) 922-1875. It pays to have the trouble shooters on your side. Ventron Corporation Congress Street Beverly, MA 01915 (617)922-1875
Reducing Phthalate Ester Color with Sodium Borohydride (SBH) by Treating Alcohol or Crude Ester
mmmmmâ 100
Ester APHA Color
Γ nt rented Alcohol
50
I
lintreated' Ester
Alcohol ] Stabilized with SBH _.:>
Alcohol ' Stabilized with SBH
1. Ester Produced from Commercial 2-ethylhexanol
[Ester
\ Decolorized \ with SBH
2. Ester Produced from Recycle Octyl Alcohol
\
3. Crude Didecyl Phthalate
CIRCLE 12 O N READER SERVICE CARD Feb. 14, 1977C&EN
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