Cortec Corporation Water Treatment Products Water Treatment Concerns

Cortec Corporation Water Treatment Products

Water Treatment Concerns z. Bio-growth z. Scaling z. Corrosion Tendency Scaling Tendency p. H 1 2 3 4 5 6 7 8 9 10 11 12 13 14

p. H Testing

Bio-Growth

Combating Micro-Biologicals Bio. Clean 610 z Biodegradable, coconut oilbased phospholipid for preservation of system free of bio-growth starting at 300600 ppm Bio. Clean 612 z Aliphatic amide based organic penetrating agent for dispersion of bio-growth deposits/films starting at 50 -100 ppm

Scaling

Combating Scaling z S-14, dosage starting at 10 ppm z S-14 F, dosage starting at 10 ppm y. Meets requirements of 21 CFR 173. 310 for use in boilers y. Meets requirements of 21 CFR 176. 170 and 176. 180 for use in paper production applications y. ANSI NSF standard 60 approval for potable water applications up to 10 ppm z S-14 RO

Corrosion Control Coupons without Vp. CI Additive Coupons with Vp. CI Additive

Cortec’s H 2 O Products z Cortec has products for the following systems: y. Cooling Tower systems (open recirc. loops) y. Closed loop systems (heating/cooling; e. g. chillers, heat exchangers, water/glycol loops) y. Boilers (low, medium, & high pressure) y. Miscellaneous: x. Hydrotesting x. Sea Water x. Pickling processes, x. Lay-Up, & more

How Vp. CI Water Products Work Vp. CI Water Additives Reach the metal through Vapor Phase Vapor/Liquid Phase Film-forming mechanism of protection

High Performance of VCIs for H 2 O Treatment Confirmed by: z Laboratory corrosion test at static and dynamic conditions z Electrochemical study z Application at the Cortec plant (cooling system for the extruder and a boiler) z Field results (Drew/Ashland, US Waters Services, Cortec’s cooling tower and boiler, etc. )

Immersion and Partial Immersion Corrosion Tests ASTM G-316 y. Sanded and methanol cleaned metal panels y. Immersed in containers filled with water-based solutions/electrolytes with or without added treatment (‘Control’) y. 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 Soft. Corr™ Reference: SSCE Calomel Saturated Working: Z 15001 Zinc Counter: High-density graphite

Tests in Pilot Cooling Tower Model 005 cooling tower manufactured by RSD Towers x 16 GPM recirculation rate x 1. 5 inch inlet and outlet diameters x. Tap water with 2. 3 -2. 5 cycles of concentration x. Temperature = 45 -50 C xp. H = 8. 6 -8. 8 x. TDS = 1250 -1300 ppm x. Conductivity = 1850 -2000 u. S 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 LC 50 = Lethal Concentration in the water for 50% of the population tested in the test period IC 25 = 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. LD 50 = 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: z. Vp. CI-617 (USDA approved), Vp. CI-615 z. S-10/S-10 F (Corrosion inhibitor for steam condensate lines in the boiler system). z. S-7 Oxygen scavenger High Pressure Boilers z. S-15 Blend of Vp. CI, CCI, and Oxygen Scavenger

Cooling Systems

Cooling System Problems Left Unchecked Can Cause: z Loss of Heat Transfer z Increased Energy (Resources) Use z Reduced Equipment Life / Failures z Lost Production / Profits z Increased Maintenance Costs z Potential Safety / Health Harm z System / Plant Shutdown

Vp. CIs for Closed Loop Re-circulating Systems Same water is used over and over, new chemicals and minerals are not added to system as often

Vp. CIs for Closed Loop Re-circulating Systems Vp. CI-649, Vp. CI-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 z S-69 (liquid) and S-69 P y. Building block formulations ysodium molybdate as a tracer y. Enhances corrosion inhibition for blended products for open loop & closed loop systems y. A good Vp. CI & CCI package

Detecting Concentration http: //www. hach. com Molybdate Test Kit, Model MO-2, Color Disc, 100 tests Range (0 -50 mg/L) Product #: 1419301

Vp. CIs for Open Systems As new water is continually added, new minerals are also added. New chemical must also be added.

Vp. CI for Once-through and Re-circulating Open Loop Cooling z. Vp. CI-647 y. Concentration Level: 100 -200 PPM initial dosage. Maintenance dosage: 15 -50 PPM z. S-14 Bio y. Concentration Level: Added to the make-up water at the rate 20 -50 ppm. S-14 Bio is effective at a p. H 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 Determination Concentration of Vp. CI-647 Measured Concentration of Organophosphonates 50 ppm 9 ppm 100 ppm 200 ppm 38 ppm 250 ppm 49 ppm 300 ppm 52 ppm http: //www. wet-international. com Kit # K-0142/1 http: //www. hach. com Kit # 224800 Phosphorus, Orthophosphate (reactive) Test Kit, Model PO-19, Color Disc, 100 tests http: //chemetrics. com Kit # 8510 D

Water/Glycol Systems z M-640 L/ M-640/M-95 y. Protective concentration levels M-640 L, M-95: 2. 0 – 2. 5% by weight 640: 0. 5% by weight M- y. Protects cast iron, carbon steel, copper, brass, solder and aluminum y. Passes ASTM D 1389 test method for automotive coolants

Test Methods Titration-Color Wheel

VACUettes auto-dilution ampoules Step 1. Hold the ampoule horizontally and touch the tip of the capillary to the sample to automatically fill. Step 3. A bubble of gas will appear. Tilt the ampoule several times, allowing the bubble to travel from end to end. 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 4. When color develops, quantify the results with a color comparator. www. chemetrics. com

Test Methods z TDS – Total Dissolved Solids (ppm, mg/l) z Conductivity (m. S, mhos) z Iron, Copper, Calcium, Hardness

Cortec Water Treatment Products for Lay-Up Applications

Boiler Lay-Up Boiler Lizard. TM z. Ferrous metal protection z. Bio-degradable, non-toxic, & non-irritating z. Boiler Dry Lay-Up y. Dry Lay-up Dosage: 1 bag per 1, 000 gallons of total capacity (or, 3. 8 m 3 or 134 ft 3)

Boiler Lay-Up : Conventional Vs Vp. CIs z Silica gels are hard to use and their removal before start up adds another laborious operation. z Nitrogen Blankets require extremely tight seals, & often onsite generators. z Hydrazine, a suspected carcinogen, is very hazardous. z Vp. CI products in easy to use water soluble bags. z Environmentally sound (100% biodegradable). z Protects boiler internals; including hard to reach places, through vapor phase. z No removal necessary for typical start-ups. z Replaces O 2 scavenger

Cortec’s Vp. CI In Cooling Tower Lay-up Cooling Loop Gator. TM z Multi-metal protection including galvanized z Non-toxic, & non-irritating z Wet lay-up & flushing applications y 4 bags/carton y 1 carton/ 1000 gallons (4000 liters, 4 m 3)

Cooling Tower Lay-Up : Conventional Vs Vp. CIs z Strictly CCIs. z Vp. CIs tandem with CCIs z Hazardous to environment z Bio-degradable, environmentally friendly z Oil products react with rubbers in the system & z Safe for wide spectrum of roof tars. rubbers and elastomers. z Promotes microbial growth z Do not promote microbial during the lay-up period & growth. even after start up

Cooling Tower Lay-Up : Conventional Vs Vp. CIs z Oil based products z. Easy application do not apply evenly z. No removal & forms gunk balls needed for a in Heat Transfer typical start-up equipment z Need expensive cleaners along with biocides to remove oil films before startups

Cooling Tower Lay-up z Competitive products: Nalco 2572, 41 L, and other oil based products, a few other contact corrosion products z Easy methods of application with Vp. CIs: y Add required dosage to the tower make up water or basin. 4 bags (1 box) treats up to 1, 000 gallons y Circulate for 12 to 24 hours (bags and product dissolves and treats system internals) y Drain water to desired level, and seal off pipe valves to external atmosphere. Lay-Up is complete!

Cortec Water Treatment Products for Niche and Miscellaneous Apps.

Pickling Process (acid cleaning) S-11 / S-11 Org /S-11 Powder x. S-11 for mineral acids such as; nitric, hydrochloric, sulfuric, etc… Used at 0. 5% - 1. 0% by weight in final concentration. x. 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 x. S-11 Powder for sulfamic acid. Used at 14% final concentration.

Salt Water/Brine z Vp. CI-644 & Vp. CI-645 y. Vp. CI-644=0. 1 -0. 3% by weight protective concentration x. Strong film-forming properties, & vapor phase protection for difficult situations y. Vp. CI-645=0. 25 -0. 75% by weight concentration x. Environmentally friendly option for less aggressive applications.

Salt Water/Brine z M-605 designed to suppress corrosion caused by Na. Cl based deicer. z M-605 L especially effective when added to a Mg. Cl 2 based deicer z M-605 PS effective in Ca. Cl 2 based deicer y. As a deicing salt additive, 4 -5% by weight y. As an inhibitor to brines in closed loop cooling systems, (3000 -5000 ppm / 0. 3 -0. 5 % weight)

Salt Water z M-645 “Float Coat” Product y. Perfect for; x. Ballast Tank Protection x. Salt Water Hydrotesting, or storage y. Approved by EPA for discharge into seawater y. Used at 0. 15 -0. 3% as a float coat, or 1, 300 – 1, 900 sq ft/gallon surface applied

Hydro-testing z Vp. CI-641, M-645, Vp. CI-609, S-69/S-69 P, Vp. CI 377, Vp. CI-417 P, Vp. CI-644, Vp. CI-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

Cortec Team z Technical Sales Manager: Jim Holden 804. 639. 7644 z Technical Service Engineer: Andrea Hansen z R & D Chemists: Dr. Margarita Kharshan Dr. Alla Furman z www. cortecvci. com 651. 429. 1100 ext. 165