VINABRITE EHX
Optical brightener for cellulose and polyamide fibres
PROPERTIES
Chemical character
Appearance
Ionic character
pH-value of a 10 % solution
Stabilities
Stilbene Triazine derivative
Yellow powder
Anionic
8.0 – 9.0
Hypochlorite bleach instable Chlorite bleach instable Peroxide bleach very good Hydrosulphite bleach very good Stability to acid instable under pH 4.0 Stability to alkali very good Stability to water hardness good
The product is not sensitive to frost.
DILUTION
VINABRITE EHX is readily dispersible in boiling water.
APPLICATION
VINABRITE EHX is a high-affinitive optical brightener with a bluish/Violet shade
and has a good affinity within the entire temperature range of 30 to 130 oC.
Optical brighteners react very sensitively to heavy metal ions, i.e. even small
amounts of heavy metal ions may impair the degree of whiteness. This problem
can be solved by adding a sequestering agent, e.g. VINAQUEST KEB.
VINABRITE EHX is only suitable for discontinuous long liquor procedures due
to its affinity behaviour and concentrated form.
Cellulose fibers (except cellulose acetate)
RECIPE PROPOSAL
We cannot recommend precisely a certain application amount since it depends
on the foaming substance in the liquor, on turbulence and on air inlet. Normally
the following amounts are recommended.
0.05 – 0.2 % VINABRITE EHX
The information given in this leaflet is based not only on work in our laboratories
but also on the reported results of other workers in this field. It is offered without
guarantee and no patent liability is assumed.