Biodegradability Study on Filming Amines – FINEAMIN 06

biodegradability of filming amines

Biodegradability Study on Filming Amines – FINEAMIN 06

In a study conducted by Eurofins Ecotoxicologie France, FINEAMIN 06 has proved to be readily biodegradable, with a biodegradability rate of 90% after 28 days of test. To be considered as ready biodegradable, a product (mainly, a pure substance) must show a biodegradation rate of at least 70% in the 10-day interval which has to fall within the 28 (firsts) days of the test.

FINEAMIN 06, our well-known for its efficiency, industrial water treatment mixture of filming amines and cleaning polymers, passed the ready biodegradable level in the first 7 days, the degradation percentage stabilizing itself to a 90% rate towards the end of the testing period.


biodegradability of filming amines

The assay was conducted by including these following preparations:

  • The tested sample with a concentration of 15 mg/L of DOC (2 flasks),
  • A control assay of the seeding (blank) (2 flasks),
  • An assay with reference substance with a biodegradability rate superior to 90% (sodium acetate at 15 mg/L of DOC),
  • An assay with the control of inhibition containing the tested sample and the reference substance at tested concentrations.

Several assays were under aeration stirring at 22 +/- 2°C.

A mineral medium was prepared using ultra-pure water. Reference substance: sodium acetate.
A bacterial inoculum was prepared using pretreated and exactly quantified activated sludge from Maxeville’s water treatment plant (France) dealing primarily with domestic waste water (98%).

FINEAMIN 06 was added directly in assay bottles containing 1L mineral medium and activated sludge with a pH of 7.4.

eurofins testing

Eurofins Ecotoxicologie France is a high level of reliability and expertise laboratory for biodegradability and ecotoxicological studies, one of the 800 worldwide, state-of-art, product testing subsidiaries of Eurofins Group. Founded in 1987, the Group has become the leading provider of a unique range of analytical testing services to clients across multiple industries: over 200,000 analytical methods for evaluating the safety, identity, composition, authenticity, origin, traceability and purity of biological substances and products.

The biodegradability tests proposed by Eurofins Ecotoxicologie France follow the standardised methods set out by the OECD and quantify the impact of the substances on the environment. French Eurofins laboratories are organized into Centers of Excellence and have COFRAC ISO / IEC 17025 accreditation, as well as Governmental approval.


Corrosion Protection With Fineamin 06

Test Details
Product FINEAMIN 06
Samples raw steel pipes
Sample 1 500ml demin water
Sample 2 500ml demin water & polyamines
Test period 14 days
Test conditions no additional water/ product
Test objective product stability

About the filming amines test


Film-forming amines, used as corrosion inhibitors for boiler water treatment, are, nowadays, one of the best alternatives for hydrazine replacement.

As we are all aware, a proper chemical conditioning of the water used inside industrial steam generators prevents corrosion and deposits, maintaining a safe and economical operation of the plant, even through out long conservation periods. The corrosion process and the transport of the corrosion products through the system are strongly connected to the metallurgy and its exposure to water carryover  and dissolved oxygen.


In order to emphasize the importance of a thoughtful water treatment and the capabilities of filming amines in protecting metal surfaces, a simple, short-term test was made in the Geneva manufacturing facilities by submerging raw steel piping in demineralized water and FINEAMIN 06 over a period of 14 days.

Contents Sample 1 Sample 2
Demineralized water - 500 ml YES YES
Raw steel piping YES YES
Polyamines & polymers mixture - 5ppm NO YES
Oxygen scavenger NO NO

FINEAMIN 06 is a boiler water additive based on filming amines and used as primary corrosion and scale inhibitor. Its formulation consists of a mixture of volatile, long chain film forming polyamines and cleaning polymers. By continuous dosage to the feed water, the product adheres to the metal surface forming a stable, protective barrier against water residues, especially oxygen. FINEAMIN 06 has been successfully implemented worldwide in numerous water-steam-condensate cycles, in particular, in power plants.

The objective of the 2 weeks long laboratory study is observing the evolution of the corrosion as well as proving the immediate effect of FINEAMIN 06 against residual oxygen: its filming abilities and its stability as a solution for protecting the metal surfaces.


The pictures taken during the 14-days trial show significant differences from one day to the next.



The sample shows the effects of an accelerated corrosion process throughout the whole trial period. After only 24 hours, the water becomes slightly cloudy, with a yellowish coloration. The density of the corrosion products increases gradually during the first days generating, by the middle of the second week, a thick, strongly colored and muddy consistence deposits layer on the bottom of the bottle.

In a normally operated system, the absence of a chemical conditioning additive would not only damage the metal, but also limit the heat transfer surfaces because of the generated deposits, decreasing equipment efficiency.


The sample containing identical raw metal pipes sunk in demineralized water, but with an additional 5ppm quantity of FINEAMIN 06, keeps its original properties for the whole period of the trial. The water is clear, colorless and the pipes show no traces of corrosion, as a proof of fast formation, followed by an uninterrupted presence, of a hydrophobic surface. FINEAMIN 06 does not contain any kind of oxygen scavenger.

The test proves that the addition of polyamines and polymers alone is easily limiting the degradation of the metal under the action of dissolved oxygen, even without removing it from the water, while ensuring a longer life and higher efficiency.