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Copper tarnish inhibitor×ＡＳＡＨＩ - List of Manufacturers, Suppliers, Companies and Products

Copper tarnish inhibitor Product List

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Copper discoloration preventive agent "BT-14" (hydrophobic)

Copper discoloration preventive agent "BT-14" (hydrophobic)

"Heat-resistant copper discoloration inhibitor" prevents self-oxidation of copper due to high temperatures. It is a water-soluble copper discoloration inhibitor that further enhances the heat resistance of BT-8.

We previously commercialized BT-8 as a heat-resistant discoloration inhibitor, but in response to the demands of our customers, we have developed BT-14, which has further improved heat resistance and the following features. The heat resistance is enhanced compared to BT-8, and it can be used at an acidic pH of 2 to 3. 【Features】 ■ Organic substances form complexes with copper, protecting the copper surface from oxidation. ■ Since preventing discoloration of copper often requires high-temperature heat resistance, we offer a heat-resistant discoloration inhibitor suitable for high temperatures. ■ The concentrate can be diluted from 20 times to 10 times for use, making it cost-effective. ■ Treatment at room temperature is also possible. For optimal performance in a short time, we recommend a treatment temperature of 50 to 60°C.

  • Other consumables

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Copper discoloration prevention agent "BT-8" (hydrophilic)

Copper discoloration prevention agent "BT-8" (hydrophilic)

Are you troubled by the discoloration of copper? ASAHI's BT series protects copper from discoloration due to oxidation.

This is a water-soluble copper discoloration preventer that forms a complex of copper and organic substances on the copper surface, preventing oxidation and long-term discoloration. It has the characteristic that a coating treatment can be obtained simply by immersion. ■ BT-8 forms a heat-resistant copper discoloration protective film (oxidation prevention film). ■ The heat resistance time varies with temperature (e.g., 180°C for 20 minutes). ■ The surface treated with this agent does not experience a decrease in electrical resistance. ■ BT-8 has high hydrophilicity, resulting in good adhesion with water-based paints and reducing the defect occurrence rate. 【Specifications】 ■ Appearance: Colorless to pale yellow transparent liquid ■ Specific gravity: 1.0 ■ pH: Neutral

  • Non-ferrous metals

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Copper discoloration inhibitor "BT-7" (hydrophobic)

Copper discoloration inhibitor "BT-7" (hydrophobic)

Prevents self-oxidation of copper due to high temperatures.

The copper discoloration inhibitor "BT-7" forms a heat-resistant acidic compound on the surface of copper, preventing self-oxidation of copper due to high temperatures. It is a highly specific copper discoloration inhibitor that allows for easy formation of a coating through immersion treatment. 【Features】 ■ Organic substances form complexes with copper, protecting the copper surface from oxidation. ■ Since preventing copper discoloration often requires high-temperature resistance, we offer a high-temperature resistant discoloration inhibitor. ■ The pH of the discoloration inhibitor is neutral (except for BT-14). ■ The concentrate can be diluted from 20 times to 10 times for use, making it cost-effective. ■ Treatment at room temperature is also possible. For optimal performance in a short time, a treatment temperature of 50-60°C is recommended. 【Specifications】 ■ Appearance: Pale yellow transparent liquid ■ Specific gravity: 0.95 ■ pH: Neutral For more details, please contact us or download the catalog.

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Copper discoloration prevention agent "BT-5"

Copper discoloration prevention agent "BT-5"

Are you struggling with the discoloration of copper? ASAHI's BT series protects copper from discoloration due to oxidation.

This is a water-soluble copper discoloration preventive agent that forms a complex of copper and organic substances on the copper surface, preventing oxidation and long-term discoloration. It has the characteristic that a coating treatment can be achieved simply by immersion. 【Specifications】 ■Appearance: Colorless transparent liquid ■Specific gravity: 0.95 ■pH: Neutral ■BT-5 forms a copper discoloration protective film. It is a standard product among the BT series. ■The surface treated with this agent does not experience a decrease in electrical resistance. ■It also has good adhesion to paints, reducing the rate of defects. ■The discoloration preventive film treated on the copper surface by BT-5 is very strong at low temperatures below 40-50°C, completely preventing discoloration. However, as the temperature rises, the discoloration preventive film is destroyed, and its discoloration prevention capability decreases.

  • Non-ferrous metals

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Copper discoloration prevention agent "BT-5" 4ℓ (hydrophobic)

Copper discoloration prevention agent "BT-5" 4ℓ (hydrophobic)

In response to many requests, we have added a 4L size of the copper discoloration prevention agent.

"I want to buy it, but 18L is too much." "I want a small amount considering storage." "I want to use it for testing, so a one-gallon can is too much." We have received numerous requests like these. In response to these requests, we have added a 4L size for the copper discoloration preventives BT-5, BT-7, and BT-8. For some time now, we have received feedback on this product: "It is very useful because it can remove oil stains and oxidation films from dirty copper that has gotten oil or glove marks after machining and bending, allowing us to deliver it in its original copper color." "Even though the discoloration of copper was removed, it would quickly turn red again, but by using BT-5, it no longer discolors." Please take advantage of the newly convenient and easy-to-purchase 4L size.

  • Non-ferrous metals

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