This product relates to a new class of scale and corrosion inhibitors, based on elemental phosphorus and carboxylate chemistry, to inhibit corrosion in ferrous metal aqueous systems or water containing systems.
Localized corrosion such as pitting may pose a greater threat to the normal operation of the system than general corrosion because such corrosion will occur intensely in isolated small areas and is much more difficult to detect and monitor than general corrosion. Localized corrosion may cause perforation quickly and suddenly without giving any easily detectable early warning. Obviously, these perforations may cause leaks that may require unscheduled shutdown of the industrial aqueous system. Sudden failure of equipment due to corrosion could also result in environmental damage and/or present a serious threat to the safety of plant operations.
The product EXACTA-1000-P is a more cost-effective antiscalant and corrosion inhibitor—capable of inhibiting both localized and general corrosion—that is environmentally benign and halogen stable, can maintain its effectiveness in high stress (i.e., long HTI, high Ca2+, etc.) conditions and can also prevent scale formation.
This product is much better comparative to other corrosion inhibitors available as well as costs low and can be used alone or in combination with the conventional products used.
In comparison with above products, EXACTA-1000-P is a new and very effective product based on phosphorus and carboxylate molecule chemistry. It is an organic scale and corrosion inhibitor in nature. The product can be formulated with other components typically used in formulations like polymer, orthophosphate, etc. to provide the most cost-effective scale and corrosion control.
The product is added to the aqueous system in an amount of from 0.1 to about 10,000 ppm, preferably from about 0.2 to 100 ppm.
A pre-polished carbon steel (mild steel, C1010 or C1008).
Corrosion Inhibitor Test Results-Hard Water.
360 ppm CaCl2, 200 ppm MgSO4, 100 ppm NaHCO3, pH = 8.4,
50°C. 160 rpm, 16 hours immersion.
Compounds | Dose as active in acid or stated | Corrosion rate(mpy) | Remarks |
---|---|---|---|
Blank | None | 43.50 | |
Orthophosphate | 15 ppm as PO4 | 17.35 | |
Pyrophosphate | 30ppm as po4 | 11.99 | |
HPA | 15ppm | 2.13 | |
HPA | 30ppm | 2.47 | Av. Of 3 tests |
Exacta-1000P | 15ppm | 2.78 | |
Exacta-1000P | 30ppm | 0.97 | |
HEDP | 15ppm | 13.05 | |
HEDP | 30ppm | 8.09 | |
ATMP | 15ppm | 9.25 | |
ATMP | 30ppm | 16.11 | |
PBTC | 15ppm | 6.17 | |
PBTC | 30ppm | 10.49 | |
Polyacrylate Mw 2000 | 15ppm | 11.84 | |
Polyacrylate Mw 2000 | 30ppm | 34.49 | |
Molybdate | 15ppm as MoO4 | 18.89 | |
Vanadate | 15ppm as VO3 | 17.43 | |
Nitrite | 30ppm as NO2 | 9.38 | |
Zn+2 | 5ppm as Zn | 37.24 | |
Gluconate | 30ppm | 5.69 | |
Below results are obtained at 38°C | |||
Blank | None | 21.50 | Av. of 2tests |
EXACTA-1000P | 40ppm | 0.98 | Av. of 2tests |
EXACTA-1000P+ Polymer-1 | 40 + 10 ppm | 0.92 | Av. of 2tests |
Phosphonates mix + Polymer-1 | 40 + 10 ppm | 19.50 | Av. of 2tests |
HPA = 2-hydroxy-phosphonacetic acid.
HEDP = 1-hydroxyethylidene-1,1-diphosphonic acid.
AMP = Amino tri(methylene phosphonic acid).
PBTC = 2-phosphono-butane-1,2,4-tricarboxylic acid.
Polymer 1 = Acrylic acid /acrylamide / sulfonate terpolymer.
Polymer Services in India, Phosphorus - Carboxylate Corin Polymer, Phosphorus - Carboxylate Corin Polymer supplier, Phosphorus - Carboxylate Corin Polymer manufacturer, Supplier of Phosphorus Carboxylate Corin Polymer, Phosphorus Carboxylate Corin Polymer in india, Phosphorus Carboxylate Corin Polymer Manufacturer in India