Cortec M 235
Cortec M 235
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Cortec M 235 is an effective corrosion inhibitor for copper items, copper-based alloys, & other muntz metals.
M 235 works by interacting with copper oxides to generate a robust, impermeable polymeric compound. This complicated substance forms a thin film or layer on metal surfaces, acting as both a mechanical & electrochemical shield against acidic corrosion. This protective layer is highly thermal and oxidatively stable and cannot be easily removed.
M 235 binds yellow metallic ions in the solution, inhibiting the galvanic breakdown of other metals when in contact with copper. M 235 is soluble in some organic and water systems.
Suggested Uses
M 235 has a wide range of uses for protecting yellow metals.
- Direct cleaning for brass sheets, rolled and coiled coppers.
- Circulating air cooling systems such as Air conditioning and cooling towers,
- Functional fluids include specialist lubricants, metalworking fluids, hydraulics, and automotive coolants,
- Used box board and wrapping paper to protect brass and copper during shipping & storage.
- Use corrosion-resistant coatings like waxes and lacquers.
- Cleansers include detergents, soaps, and powerful acid/alkali cleansers.
- Fabricated copper and brass goods.
- Sculptures, artefacts, and decorative things.
Dosage
When M 235 is added to liquids at concentrations ranging from 0.1 to 2.0%, the pH is nearly neutral. Liquids can be non-aqueous or aqueous. It can be utilised as a vapour or solid. For particular recommendations, reach out to a Cortec specialist.
Packaging
M 235 packaging options are bulk and fiber drums. Sizes are in 5 pounds or 2.3 kg, 50 pounds or 23 kg, 100 pounds or 45 kg.
Product Specifications (.PDF)
Frequently Asked Questions
• What exactly is Cortec M-235 and what's its primary purpose?
Cortec M-235 is a highly effective powder-based corrosion inhibitor designed specifically to protect what we call "yellow metals," which primarily include copper, brass, and bronze. Its main job is to prevent these metals from corroding, whether that's flash corrosion during processing or long-term deterioration during storage and use.
• How does Cortec M-235 actually protect metals from corrosion?
This inhibitor works by forming a strong, insoluble polymeric complex on the surface of the metal. Think of it like this: it reacts with the tiny copper oxides already present on the metal, creating a thin, robust film that acts as both a physical shield and an electrochemical barrier against corrosive elements. It even cleverly prevents galvanic corrosion by tying up yellow metal ions in solution.
• Is Cortec M-235 a contact inhibitor, a vapor phase inhibitor, or both?
Cortec M-235 offers comprehensive protection because it functions as both a contact and a vapor phase corrosion inhibitor. This means it protects surfaces it directly touches, but also releases protective vapors that can reach and safeguard more intricate or hard-to-access areas within an enclosed space.
• What types of metals is Cortec M-235 specifically designed to protect?
This product is a specialist for "yellow metals." So, if you're working with copper, various copper-based alloys, or bronze, Cortec M-235 is precisely what you need for their corrosion prevention.
• Does Cortec M-235 provide immediate or long-term corrosion protection?
It's great to hear that Cortec M-235 is engineered for both! It offers flash protection, which is crucial for those quick processing stages, and also provides excellent long-term protection, ensuring your valuable metal items stay pristine over extended periods.
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Application and Usage: Where and How to Use M-235
• Can Cortec M-235 be used in water-based systems, or is it only for non-aqueous applications?
Absolutely, Cortec M-235 is quite versatile. It has solubility in both water and certain organic systems, making it suitable for a wide range of formulations, including water-based and non-aqueous applications.
• I'm working with a water/glycol-based paint. Can Cortec M-235 be added to it?
Yes, it can. Cortec M-235 is specifically formulated as a powder vapor phase corrosion inhibitor package that can be incorporated into water/glycol-based paints, coatings, adhesives, and even various fluids.
• Is Cortec M-235 suitable for protecting metal components in circulating cooling systems?
Definitely! Cortec M-235 is an excellent choice for circulating cooling systems, such as cooling towers and air conditioning units, helping to keep their yellow metal components free from corrosion.
• Can this product be used as an additive in functional fluids like hydraulic fluids or lubricants?
Yes, you can absolutely add Cortec M-235 to functional fluids. It's a valuable additive for hydraulic fluids, specialty lubricants, automotive coolants, and metalworking fluids to enhance their corrosion-inhibiting properties for yellow metals.
• How can Cortec M-235 be used for direct treatment on rolled copper or brass sheets?
For direct treatment, Cortec M-235 can be applied to rolled copper or brass sheets and coils, creating that protective barrier directly on the metal surface to prevent corrosion during storage or processing.
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• Is it possible to use Cortec M-235 in corrosion protective coatings like lacquers and waxes?
Yes, it's quite effective when integrated into such coatings. You can use Cortec M-235 in the formulation of corrosion protective coatings, including both lacquers and waxes, to provide an added layer of defense for yellow metals.
• Can Cortec M-235 be added to cleaners and degreasers?
Indeed, Cortec M-235 is a suitable additive for cleaners such as soaps, detergents, and even strong alkali or acid cleaners, ensuring that these cleaning solutions don't inadvertently cause corrosion to yellow metals.
• What's the recommended concentration range for Cortec M-235 when incorporating it into liquids?
When mixing Cortec M-235 into liquids, whether aqueous or non-aqueous, the recommended concentration range is typically between 0.1% and 2.0% by weight. This concentration helps achieve an almost neutral pH in the final solution.
• Can Cortec M-235 be used to protect fabricated products made from copper and brass?
Absolutely. It's an ideal solution for protecting fabricated products made from copper and brass, safeguarding them during storage, transit, and beyond.
• Is Cortec M-235 applicable for preserving artifacts or decorative items made of yellow metals?
Yes, it is! Cortec M-235 can be a fantastic tool for preserving artifacts, sculptures, and other decorative items made from copper, brass, or bronze, helping to maintain their historical or aesthetic integrity by preventing corrosion.
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Technical Specifications & Benefits
• What kind of barrier does the protective layer formed by M-235 provide?
The protective layer that Cortec M-235 creates on metal surfaces acts as both a physical and an electrochemical barrier, effectively shielding the metal from corrosive agents.
• How stable is the protective layer formed by Cortec M-235?
The polymeric complex formed by Cortec M-235 is notably stable. It possesses a high degree of thermal and oxidative stability, meaning it's not easily removed or degraded by heat or exposure to oxygen.
• Does Cortec M-235 help prevent galvanic corrosion? If so, how?
Yes, it does. Cortec M-235 actively complexes yellow metal ions in solution. By doing this, it prevents these ions from facilitating galvanic corrosion of other metals that might be in contact with copper, offering multi-metal protection within a system.
• How does the solubility of Cortec M-235 change when other polar additives are present in a formulation?
Interestingly, the solubility of Cortec M-235 actually increases when it's used in formulations that contain other polar additives, which can be beneficial for achieving homogeneous mixtures.
• Does this product have any effect on the pH of the liquids it's added to?
When incorporated into liquids at its recommended concentration, Cortec M-235 typically results in an almost neutral pH, which is a desirable characteristic for many formulations.
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• Can Cortec M-235 be used in solvent-based acrylic and alkyd coatings?
Yes, Cortec M-235 is quite suitable for formulating both solvent-based acrylic and alkyd coatings, offering excellent corrosion protection within these systems.
• Is it compatible with water-based epoxy or 2K polyurethane coatings?
Absolutely! It's designed to be compatible with a variety of water-based systems, including water-based epoxy and 2K polyurethane coatings.
• Can Cortec M-235 be used with PUD, water reducible alkyds, or styrenated acrylic emulsions?
Yes, you can effectively use Cortec M-235 in formulations with PUD (Polyurethane Dispersion), water reducible alkyds, and styrenated acrylic emulsions, broadening its utility across different coating types.
• What about thermosetting acrylics and water reducible polyester resins? Is it compatible with those?
Indeed, Cortec M-235 is also suitable for use in thermosetting acrylics and water reducible polyester resins, showcasing its wide compatibility with various resin systems.
Storage, Handling & Safety
• What's the best way to store Cortec M-235?
For optimal performance and shelf life, Cortec M-235 should be stored in its original, unopened packaging in a cool, dry place, away from extreme temperatures and moisture.
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• Are there specific packaging options available for Cortec M-235?
Yes, Cortec M-235 is available in a few different packaging sizes to suit various needs. You can typically find it in 5-pound (2.3 kg) pails, 50-pound (23 kg) fiber drums, and 100-pound (45 kg) fiber drums, as well as in bulk quantities for larger applications.
• What are the general safety precautions to keep in mind when handling Cortec M-235?
Like with any chemical product, it's always wise to practice good industrial hygiene. This typically means wearing appropriate personal protective equipment, ensuring good ventilation, and reviewing the Safety Data Sheet (SDS) for detailed handling instructions before use.
• Is Cortec M-235 considered environmentally friendly?
While always important to check the specific SDS for the most up-to-date environmental information, Cortec's VpCI products are generally recognized for being more environmentally friendly compared to many traditional corrosion inhibitors, often being non-toxic and biodegradable.
• Does Cortec M-235 require any special disposal procedures?
Disposal of Cortec M-235 should always be done in accordance with local, regional, national, and international regulations. Consulting the product's Safety Data Sheet (SDS) will provide specific guidance on proper disposal methods.
• How can I get more detailed technical information about Cortec M-235?
For the most comprehensive technical details, including specific dosage recommendations for unique applications or in-depth performance data, it's always best to refer to the official Cortec M-235 Technical Data Sheet (TDS) or contact Valdamark Direct's technical support team directly.
