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PRODUCT INFORMATION

WELLIC

INTRODUCTION 4. Readily soluble in acid, non-staining and do not
precipitate on standing, very easy to use.
This very important procedure is applied chiefly to
the remove of scale and other unwanted deposits
from boilers, evaporator and chemical reaction SPECIFICATION
vessels. Hydrochloric acid is widely used, frequently
with an important assist form hydrofluoric acid or Appearance . . . . . . . . . . White free flowing granules.
fluorides. This acid are another cause of corrosion in Solubility . . . . . . . . . . . Up to 25% by weight in water.
chemical reaction vessel. Inhibited acids are used pH of 1% solution . . . . . . . . . . . . . . . . . . . . . . . . . 6.8
extensively in plant cleaning, both pre-commission
and periodic service cleaning. Acid solution are used
to remove hard scale and deposits formed in boilers, APPLICATIONS
evaporators and coolers. Metal corrosion will also
occur through an electro-chemical reaction. WELLIC has been developed as a acid inhibitor in
Decreasing the pH of the acid solution and hydrochloric acid cleaning over a wide range of
increasing the temperature will speed up the temperature, from 25°C up to 110°C.
corrosion rate. The purpose of the inhibitor is to It is particularly recommended in the following
prevent any attack of acid on metal surface. applications :-
 Acid pickling to remove oxide scale formed
during metal working.
DESCRIPTION  Plant cleaning to remove hard scale and
deposits from boilers, evaporators and coolers.
WELLIC is a highly efficient inhibitor for the  Oil well acidizing to remove scale which
protection of metal materials during the chemical interfere with the passage of oil in the lines and
cleaning using hydrochloric acid or mixture of tubing.
hydrochloric and hydrofluoric acids at temperature
from 25-110°C. WELLIC prevents attack by
formation of a barrier on the surface of the metal. In DOSAGE
addition, the corrosion rate of metal in acidic solution
is governed by the rate of reduction of hydrogen ions WELLIC can be added to the concentrated
to hydrogen gas at cathodic site. WELLIC inhibit the hydrochloric acid. This inhibited acid can be stored
attack of hydrogen ions on steel by raising the for several months.
hydrogen overvoltage on cathodic surface. Recommended dosage is 0.15 to 0.25% for 5% to
15% acid solution.

PHYSICAL CHARACTERISTICS
HANDLING AND STORAGE
Colour . . . . . . . . . . . . . . . . . . . . . . . . . . .amber liquid
Specific gravity . . . . . . . . . . . . . . . . . . .0.925 at 25°C Care should be taken in their uses, gloves and
Solubility . . . . . . . . . . . . . . . . . . . in hydrochloric acid goggles should be worn as they are skin and eye
pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7.0 + 0.5 irritants. In case of contamination, flush thoroughly
with water and wash with soap and water. Major skin
irritation, ingestion or contamination of eye, call a
ADVANTAGES physician.

1. Anti-emulsifying properties which avoid formation
of emulsion between the used acid solution and PACKAGING
the present oil.
2. High wetting power facilitating the acid diffusion In plastic gallon of 20 Kgs.
through the scale until the acid is used up.
3. Acid attached on metals can be prevented
completely by small amount of this chemical, and
the cleaning action of the acid is not affected.

TECHNICAL SERVICE
WELLMAN CO.,LTD HAS A STAFF OF TECHNICAL SERVICE
ENGINEERS WHO WILL ASSIST AND TRAIN YOUR MEN ON THE PROPER
EVALUATION AND APPLICATION OF OUR CHEMICALS AND GIVE
RECOMMENDATION TO ENSURE SMOOTH OPERATION
THIS SERVICE IS GIVE FREE OF CHARGE