AVCOSAN 3EP is a liquid enzymatic bio-catalyst used for quick and complete elimination of hydrogen-peroxide at the end of peroxide bleaching processes.
AVCOSAN 3EP has three main features: Economy, Ecology, Efficiency.The elimination reaction can be described by the following equation:
2H2O2 bio-catalyst O2 + 2H2O
AVCOSAN 3EP is absolutely non-polluting product, and is not producing toxic
by-products during peroxide destruction process.
SPECIFICATION:
Appearance |
Slightly brownish liquid. |
Chemical nature |
Aqueous enzyme preparation. |
Compatibility |
Is not compatible with strong oxidizing materials, strong acids and alkalis. Sensitive to hot temperatures. |
Density (gr/cc) |
1.06 – 1.12 |
Ionic nature |
Non- ionic |
pH (10% sol.) |
6.5 ± 0.5 |
Solubility |
Soluble in water at any ratio. |
Storage |
When stored in closed containers in cool place (5-20°C), shelf life is at least 12 months. |
PROPERTIES & USES:
- AVCOSAN 3EP is producing a quick and complete destruction of hydrogen-peroxide
which has not been completely used up in peroxide bleaching bath.
- Residual peroxide is decomposed to natural elements of water and oxygen. No toxic
residues are produced as is common with reductive substances based on sulphur or
nitrogen compounds.
- Use of AVCOSAN 3EP is ecologically beneficial, and the product is regarded as
user friendly, as it is not chemically reactive and non-toxic at-all.
- AVCOSAN 3EP is not affecting the textile fibres and the dyestuffs molecule.
Residues of the product in reactive dyeing bath can not cause any harm to the
dyeing results.
- Using AVCOSAN 3EP is saving number of rinse baths. This leads to considerable
saving in water consumption, energy and machine time.
- The elimination of peroxide by AVCOSAN 3EP has a rapid kinetic behaviour, which
significantly reduces the treatment time.
- AVCOSAN 3EP is foam free.
- AVCOSAN 3EP is a liquid product, which is suitable for use for any kind of dosing
machines.
- Suitable for use in continuous and discontinuous processes.
- Due to the quick and absolute elimination of hydrogen-peroxide residues from the
bleached textile, the dyeing results will be more level, with no critical shade
changes and maximum colour yield.
APPLICATION:
AVCOSAN 3EP is fully active at temperature range of 20-60°C, and at pH range of 4-9.
It can be used in continuous procedures, and in high liquor ratio processes.
A.Discontiuous machines (jet,winch,Jig)
PROCESS NO.1
-
After bleaching has been completed, drain the bleaching liquor.
-
Rinse with water at 50°C, add acetic-acid to adjust pH to 6-7.
-
Add 0.2-0.5 g/l AVCOSAN 3EP and run at 50°C for 15 min.
-
Check for residual peroxide with a suitable indicator.
-
Drop bath. Add fresh water and start dyeing.
PROCESS NO.2
-
After bleaching has been completed drain the bleaching liquor.
-
Rinse with water at 50°C, add acetic-acid to adjust pH to 6-7.
-
Drop bath. Add fresh water. Check pH, should be lower than 7.
-
Add 0.2-0.5 g/l AVCOSAN 3EP and run for 15 min.
-
Check for residual peroxide with a suitable indicator.
-
B. Continuous machines (pad-steam,pad-roll, pad batch.)
-
After bleaching process transfer fabric to an open width washing range.
-
To the last box, at temperature 20-40°C, and pH of 6-8 add 0.2 – 0.5 g/l AVCOSAN 3EP.
REMARKS
Enzymatic preparations are sensitive to pH and temperature beyond the activity range.
Use of AVCOSAN 3EP at temperature above 60°C, and pH above 10 may lead to a fast inactivation of the enzyme, thus resulting in a loss of effectiveness.
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