Annex C
(informative)
Guidelines for acceptance criteria for viscous corrosion protection compounds and examples of standards for the testing of material properties
| Property | Units |
Acceptance values |
| Content of free sulphur, sulphates and sulphides | ppm | ≤ 50 |
| Content of ionic chlorides, nitrites, nitrates, rhodanites | ppm | ≤ 50 |
| Spec. resistivity | Ω*cm | ≥109 |
| Water absorption 0,1N KOH, after 30 days | % | ≤ 2 |
| Saponification (acidity) | mg KOH/gm | ≤ 5 |
| Deoiling on filter paper at 50 °C, 24 h: dia. of oil spot. | dia. mm | ≤ 5 |
| Penetration depth in deoiling test on hardened cement grout 5mm thick at 50 °C after 7 days | mm | ≤ 2 |
| Thermal stability, 24 h No oil droplet at sieve for temperature increase of 10 °C every 2 h. | °C Occurrence of oil droplets |
≥ 40 |
| Drop point | °C | ≥ 60 |
| Protection against rust - Marine fog: 5 % NaCI - 168 h at 35 °C | visual | Zero corrosion |
| Bleeding at 40 °C | % | ≤ 5 |
Examples of standards for the testing of materials are:
DIN 51759 Prüfung von flüssigen Mineralölerzeugnissen; Prüfung der Korrosionswirkung auf Kupfer; Kupferstreifen prüfung. (Testing of liquid mineral oil products; testing of corrosion related to copper; copper strip method).
DIN 51576 Prüfung von Mineralöl-Kohlenwasserstoffen; Bestimmung des Salzgehaltes. (Testing of mineral oil hydrocarbons: determination of salt content).
DIN 53483 Prüfung von Isolierstoffen; Bestimmung der elektrischen Eigenschaften: Teil 1, 2, 3. (Testing of insulating materials: determination of the di-electrical properties: part 1,2,3).
DIN 53495 Prüfung von Kunssttoffen; Bestimmung der Wasseraufnahme. (Testing of plastics; determination of the water absorption).
DIN 53401 Bestimmung der Verseifungszahl. (Test method for the determination of the saponification number).
DIN 51801 Bestimmung des Tropfpunktes: Ubbelohde-Verfahren für bituminöse Bindemittel. (Test method for the determination of the drop point: Ubbelohde method for bitumen).
ASTM D-130-88 Method for detection of copper corrosion from petroleum products by the copper strip tarnish test.
ASTM D-94-89 Test method for saponification no. of petroleum products. ASTM D-512-89 Test methods for chloride ion in water.
