Cortec Corporation

Water Treatment Products

Water Treatment Concerns

Bio-growthScalingCorrosion

1 2 3 4 5 6 7 8 9 10 11 12 13 14

Corrosion Tendency Scaling Tendency

pH

pH Testing

Bio-Growth

Combating Micro-BiologicalsCombating Micro-Biologicals

BioClean 610 Biodegradable, coconut oil-

based phospholipid for preservation of system free of bio-growth starting at 300-600ppm

BioClean 612 Aliphatic amide based

organic penetrating agent for dispersion of bio-growth deposits/films starting at 50-100ppm

Scaling

Combating Scaling

S-14, dosage starting at 10ppm

S-14F, dosage starting at 10ppm Meets requirements of 21CFR 173.310 for

use in boilers Meets requirements of 21CFR 176.170

and 176.180 for use in paper production applications

ANSI NSF standard 60 approval for potable water applications up to 10 ppm

S-14RO

CorrosionCorrosion

Control Coupons without VpCI

Additive

Coupons with VpCI Additive

Cortec’s H2O Products

Cortec has products for the following systems: Cooling Tower systems (open recirc. loops) Closed loop systems (heating/cooling; e.g. chillers, heat exchangers, water/glycol

loops) Boilers (low, medium, & high pressure) Miscellaneous:

HydrotestingSea WaterPickling processes, Lay-Up, & more

How VpCI Water Products Work

VpCI Water Additives

Reach the metal through

Vapor Phase Vapor/Liquid Phase

Liquid Phase

Film-forming mechanism of protection

High Performance of VCIs for H2O Treatment Confirmed

by:

Laboratory corrosion test at static and dynamic conditions

Electrochemical study

Application at the Cortec plant (cooling system for the extruder and a boiler)

Field results (Drew/Ashland, US Waters Services, Cortec’s cooling tower and boiler, etc.)

Immersion and Partial Immersion Corrosion Tests

ASTM G-316 Sanded and methanol cleaned metal panels

Immersed in containers filled with water-based solutions/electrolytes with or without added treatment (‘Control’)

Weight loss was determined or panels were visually evaluated for the presence of corrosion after cleaning according to ASTM G-1.7

Electrochemical Testing

Test Equipment: Potentiostat/Galvanostat “Versastat” with corrosion software model 352/252 SoftCorr™

Reference: Reference: SSCE SSCE

Calomel Calomel SaturatedSaturated

Counter: High-density Counter: High-density graphitegraphite

Working: Working: Z15001 Z15001

ZincZinc

Tests in Pilot Cooling TowerTests in Pilot Cooling Tower

Model 005 cooling tower manufactured by RSD Towers

16 GPM recirculation rate1.5 inch inlet and outlet diameters

Tap water with 2.3-2.5 cycles of concentration

Temperature = 45-50CpH = 8.6-8.8TDS = 1250-1300ppmConductivity = 1850-2000uS

Weight loss on corrosion coupons in contact with the tower water passing used to calculate corrosion rates

Toxicity Testing

Aquatic Toxicity Testing Terms

NOEC = Highest Concentration with No Observable Effect

LOEC = Lowest Concentration with an Observable Effect

LC50 = Lethal Concentration in the water for 50% of the population tested in the test period

IC25 = It is the level at which the organisms exhibit 25 percent reduction in a biological measurement such as reproduction or growth. It is calculated statistically and used in chronic toxicity testing.

LD50 = Lethal Dose (based on body weight of species tested) for 50% of the population tested

Cortec Water Treatment Products for

In-Use Applications

Boilers

Boilers and Steam Line Products

Low/Medium Pressure working Boilers:

VpCI-617 (USDA approved), VpCI-615S-10/S-10F (Corrosion inhibitor for steam condensate lines

in the boiler system). S-7 Oxygen scavenger

High Pressure BoilersS-15 Blend of VpCI, CCI, and Oxygen

Scavenger

Cooling Systems

Cooling System Problems

Left Unchecked Can Cause:

Loss of Heat Transfer Increased Energy (Resources) UseReduced Equipment Life / FailuresLost Production / Profits Increased Maintenance CostsPotential Safety / Health HarmSystem / Plant Shutdown

VpCIs for Closed LoopRe-circulating Systems

Same water is used over and over, new chemicals and minerals are

not added to system as often

VpCIs for Closed LoopRe-circulating Systems

VpCI-649, VpCI-649 P

Sodium Molybdate tracer

Metals: Ferrous, Copper & Brass, Aluminum & alloys, Galvanized

Chemistry: Vapor & contact film-forming inhibitor; aminocarboxylate-based salts & polyacrylate dispersant/anti-scalant

Building Blocks for Water Treatment formulations

S-69 (liquid) and S-69 P

Building block for formulations

sodium molybdate as a tracer

Enhances corrosion inhibition for blended products for open loop & closed loop

systems

A good VpCI & CCI package

Detecting ConcentrationApproximate Concentration of Molybdate vs VpCI-649

0

10

20

30

40

5060

70

80

90

100

0 0.2 0.4 0.6 0.8 1 1.2

wt % VpCI-649

mg

/l m

oly

bd

ate

http://www.hach.comMolybdate Test Kit, Model MO-2, Color Disc, 100

tests Range (0-50 mg/L) Product #: 1419301

VpCIs for Open Systems

As new water is continually added, new minerals are also added. New

chemical must also be added.

VpCI for Once-through andRe-circulating Open Loop Cooling

VpCI-647 Concentration Level: 100-200 PPM

initial dosage. Maintenance dosage: 15-50 PPM

S-14 Bio Concentration Level: Added to the

make-up water at the rate 20-50 ppm. S-14 Bio is effective at a pH range of 6.0-9.0.

Metals: Ferrous, Copper, Brass, Aluminum, & Galvanized steel

Chemistry: Vapor and contact film-forming inhibitors along with anti-scalants

Concentration DeterminationConcentration Determination

Concentration of VpCI-647

Measured Concentration of Organophosphonates

50ppm 9ppm

100ppm 20ppm

200ppm 38ppm

250ppm 49ppm

300ppm 52ppm

http://www.wet-international.com Kit # K-0142/1http://www.hach.com Kit # 224800Phosphorus, Orthophosphate (reactive) Test Kit, Model PO-19, Color Disc, 100 tests http://chemetrics.com Kit # 8510D

Water/Glycol Systems

M-640 L/ M-640/M-95 Protective concentration levels

M-640 L, M-95: 2.0 – 2.5% by weight M-640: 0.5% by weight

Protects cast iron, carbon steel, copper, brass, solder and aluminum

Passes ASTM D 1389 test method for automotive coolants

Test MethodsTitration-Color Wheel

VACUettesVACUettesauto-dilution ampoulesauto-dilution ampoules

Step 1. Hold the ampoule horizontally

and touch the tip of the capillary to the sample

to automatically fill.

Step 2. Fill the snap cup with diluent and immerse

the ampoule/capillary tube assembly. Snap the tip. 

The ampoule will fill with the diluted sample.

Step 3. A bubble of gas will appear. Tilt the ampoule several times,

allowing the bubble to travel from

end to end.

Step 4. When color develops, quantify the results with a

color comparator.

www.chemetrics.com

TDS – Total Dissolved Solids (ppm, mg/l)

Conductivity (S, mhos)

Iron, Copper, Calcium, Hardness

Test MethodsTest Methods

Cortec Water Cortec Water Treatment Products for Treatment Products for

Lay-Up ApplicationsLay-Up Applications

Boiler LizardTM

Ferrous metal protectionBio-degradable, non-toxic, & non-irritatingBoiler Dry Lay-Up

Dry Lay-up Dosage: 1 bag per 1,000 gallons of total capacity (or, 3.8m3 or 134 ft3)

Boiler Lay-Up

Boiler Lay-Up : Conventional Vs VpCIs

Silica gels are hard to use and their removal before start up adds another laborious operation.

Nitrogen Blankets require extremely tight seals, & often onsite generators.

Hydrazine, a suspected carcinogen, is very hazardous.

VpCI products in easy to use water soluble bags.

Environmentally sound (100% biodegradable).

Protects boiler internals; including hard to reach places, through vapor phase.

No removal necessary for typical start-ups.

Replaces O2 scavenger

Cortec’s VpCI In Cooling Tower Lay-up

Cooling Loop GatorCooling Loop GatorTMTM

Multi-metal protection including galvanized

Non-toxic, & non-irritating Wet lay-up & flushing applications

4 bags/carton 1 carton/ 1000 gallons (4000 liters,

4m3)

Cooling Tower Lay-Up :Conventional Vs VpCIs

Strictly CCIs. Hazardous to environment Oil products react with

rubbers in the system & roof tars.

Promotes microbial growth during the lay-up period & even after start up

VpCIs tandem with CCIs Bio-degradable,

environmentally friendly Safe for wide spectrum of

rubbers and elastomers. Do not promote microbial

growth.

Cooling Tower Lay-Up :Conventional Vs VpCIs

Oil based products do not apply evenly & forms gunk balls in Heat Transfer equipment

Need expensive cleaners along with biocides to remove oil films before start-ups

Easy applicationNo removal

needed for a typical start-up

Cooling Tower Lay-up

Competitive products:Nalco 2572, 41 L, and other oil based products, a few other contact corrosion products

Easy methods of application with VpCIs: Add required dosage to the tower make up water

or basin. 4bags (1 box) treats up to 1,000gallons Circulate for 12 to 24 hours (bags and product

dissolves and treats system internals) Drain water to desired level, and seal off pipe

valves to external atmosphere. Lay-Up is complete!

Cortec Water Cortec Water Treatment Products for Treatment Products for

Niche and Niche and Miscellaneous Apps.Miscellaneous Apps.

Pickling Process (acid cleaning)

S-11 / S-11Org /S-11 Powder

S-11 for mineral acids such as; nitric, hydrochloric, sulfuric, etc… Used at 0.5% - 1.0% by weight in final concentration.

S-11 Org for organic acids such as; acetic, citric, formic, oxalic, and also inorganic phosphoric, sulfuric, sulfamic. Used at 1.0 – 4.0% final concentration

S-11 Powder for sulfamic acid. Used at 1-4% final concentration.

Salt Water/Brine

VpCI-644 & VpCI-645

VpCI-644=0.1-0.3% by weight protective concentration

Strong film-forming properties, & vapor phase protection for difficult situations

VpCI-645=0.25-0.75% by weight concentration

Environmentally friendly option for less aggressive applications.

Salt Water/Brine

M-605 designed to suppress corrosion caused by NaCl based deicer.

M-605 L especially effective when added to a MgCl2 based deicer

M-605 PS effective in CaCl2 based deicer

As a deicing salt additive, 4-5% by weight As an inhibitor to brines in closed loop

cooling systems, (3000-5000 ppm / 0.3-0.5 % weight)

Salt Water

M-645 “Float Coat” Product Perfect for;

Ballast Tank ProtectionSalt Water Hydrotesting, or storage

Approved by EPA for discharge into seawater

Used at 0.15-0.3% as a float coat, or 1,300 – 1,900 sq ft/gallon surface applied

VpCI-641, M-645, VpCI-609, S-69/S-69P, VpCI-377, VpCI-417P, VpCI-644, VpCI-645

Multiple Products, for multiple different applications. Depending upon length of protection needed, metal types (ferrous, copper, brass, cast iron, etc…) see hydrotesting chart for more information

Hydro-testing

Cortec Team

Technical Sales Manager:Jim Holden 804.639.7644

Technical Service Engineer:Andrea Hansen 651.429.1100 ext.

165

R & D Chemists: Dr. Margarita Kharshan

Dr. Alla Furman

www.cortecvci.com