Protection upgraded
SurTec 533
Aqueous Corrosion Inhibitor
Properties
liquid
temporary corrosion protection
for spray- and soak application
suitable for iron and steel
free of nitrites
suited for vibratory finishing
Application
After drying, SurTec 533 forms a temporary corrosion protection film which is removable in the
cleaning bath. Therefore SurTec 533 is preferably dosed in the last rinse before drying. The
application concentration depends on the requested corrosion protection grade. The use of
deionised water is recommended.
make-up value:
0.1-2 %vol
temperature:
room temperature up to 90C
application time:
up to 10 minutes
Maintenance and Analysis
Analyse and adjust the concentration of SurTec 533 regularly.
Dose SurTec 533 according to titration (or pH-value), if no alkalinity is dragged into the bath
or determine by corrosion protection test according to DIN 51360, part 2.
Sample Preparation
Take a sample at a homogeneously mixed position and let it cool down to room temperature.
If the sample is turbid, let the turbidity settle down and decant or filter the solution.
SurTec 533 Analysis by Titration
reagents:
procedure:
calculation:
0.1 N hydrochloric or sulfuric acid
indicator: bromophenol blue
1.
2.
3.
4.
Pipette 10 ml bath sample into a 250 ml Erlenmeyer flask.
Dilute with approx. 100 ml deionised water.
Add 3 drops of indicator.
Titrate with 0.1 N acid from violet to yellow.
consumption in ml 0.206 = %vol SurTec 533
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Technical Specification
(at 20C)
Appearance
Density (g/ml)
SurTec 533
liquid, blue, clear
1.047 (1.03-1.06)
pH-value (at 20 g/l)
10.2 (9.5-11)
Ingredients
amines
corrosion inhibitors
colouring
Stock Keeping
In order to prevent delays in the production process, per 1,000 l bath the following amount
should be kept in stock:
SurTec 533
25 kg
Product Safety and Ecology
Classification and designation are noted in the Material Safety Data Sheets (according to the
European legislation). The safety instructions and the instructions for environmental protection
have to be followed in order to avoid hazards for people and environment. Please pay attention
to the explicit details in our Material Safety Data Sheets.
Warranty
We are responsible for our products in the context of the valid legal regulations. The warranty
exclusively accesses for the delivered state of a product. Warranties and claims for damages
after the subsequent treatment of our products do not exist. For details please consider our
general terms and conditions.
Further Information and Contact
If you have any questions concerning the process, please contact your local technical
department.
For further information and contact details please visit our homepage:
http://www.SurTec.com
4 March 2014/DK, UK
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