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Inhibitor×ＡＳＡＨＩ - List of Manufacturers, Suppliers, Companies and Products

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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Silver tarnish inhibitor AC-70 (sulfur-based rust preventive agent)

Silver tarnish inhibitor AC-70 (sulfur-based rust preventive agent)

A protective film is formed on the silver surface, which maintains the luster of the silver for a long time. The protective film has good solderability and a low electrical contact resistance.

AC-70 is designed to maintain resistance to sulfur gas like AC-20 and to form a thin, uniform protective film. Due to the thin and uniform protective film, there is no unevenness in the thickness of the protective film even when applied to glossy silver and semi-gloss silver plating. It is a silver discoloration preventive agent used to protect the surfaces of electrical and electronic components, as well as jewelry and utensils, from various harmful atmospheres. The environments that affect silver and silver-plated surfaces are diverse, but particularly when exposed to atmospheres containing sulfur gas, sulfides are generated on the silver surface, causing the appearance of the silver surface to turn black, increasing electrical resistance in electronic components, and reducing conductivity. The silver discoloration preventive agent AC-70 forms a strong film on the silver surface, protecting it from sulfide and oxidation. Additionally, the protective film has good solderability and low electrical contact resistance. Being water-based and neutral, it is also easy to treat wastewater. Like AC-20, AC-70 provides a high discoloration prevention effect against sulfur gas within the AC series.

  • Other metal materials
  • LED Module
  • Other Connectors

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Silver tarnish inhibitor AC-10A

Silver tarnish inhibitor AC-10A

A protective film is formed on the silver surface, which maintains the luster of the silver for a long time. The protective film has good solderability and low electrical contact resistance.

This is a silver discoloration preventive agent designed to protect the surfaces of electrical and electronic components, as well as jewelry and utensils made of silver or silver-plated materials, from various harmful environments. The environments that affect silver and silver-plated surfaces are diverse, but particularly when exposed to atmospheres containing sulfur gas, sulfides form on the silver surface, causing it to discolor to a black color. In electronic components, this leads to an increase in electrical resistance and a decrease in conductivity. The silver discoloration preventive agent AC10A forms a strong film on the silver surface, protecting it from sulfide and oxidation. Additionally, the protective film has good solderability and low electrical contact resistance. AC-10A is a water-based solvent type silver discoloration preventive agent that is widely used in electrical and electronic components such as switch contacts that dislike water, connector contact points, and printed circuit boards.

  • Other metal materials
  • LED Module
  • Other Connectors

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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.

  • Other consumables

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Water-soluble gold discoloration inhibitor AU-20

Water-soluble gold discoloration inhibitor AU-20

Protect electronic components gold-plated from corrosive gases! Water-soluble gold discoloration preventer AU-20.

The water-soluble gold discoloration preventive agent AU-20 is a water-soluble discoloration preventive agent developed to protect various gold-plated electronic components from corrosive gases. As electronic components become smaller and more densely integrated, there is an increasing demand for enhanced reliability in performance. In particular, gold plating is applied to contact areas where reliability is critical. Gold is chemically stable, has low electrical resistance, and exhibits excellent corrosion resistance in corrosive environments; however, to consider economic factors, gold plating is currently applied in thin layers. As a result, pinholes can easily form, allowing corrosive gases to penetrate, leading to corrosion and performance degradation. **Features** - Excellent corrosion resistance with minimal increase in contact resistance → Passes environmental tests such as heat resistance, salt spray resistance, resistance to sulfur dioxide gas, and resistance to hydrogen sulfide gas, with a minimal increase in contact resistance after testing. → In particular, AU-20 reacts not only with copper alloys but also with nickel surfaces, providing protection from corrosive environments. - Does not affect solderability - Provides adequate lubricity For more details, please download the catalog or contact us.

  • Chemicals

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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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Silver tarnish inhibitor AC-20 (sulfur-based rust inhibitor)

Silver tarnish inhibitor AC-20 (sulfur-based rust inhibitor)

A protective film is formed on the silver surface, allowing the silver luster to be maintained for a long time. The protective film has good solderability and a low electrical contact resistance.

This is a silver discoloration preventive agent (sulfur-based rust inhibitor) designed to protect the surfaces of electrical and electronic components, as well as jewelry and utensils made of silver and silver-plated materials, from various harmful environments. The environments that affect silver and silver-plated surfaces are diverse, but particularly when exposed to atmospheres containing sulfur gas, sulfides form on the silver surface, resulting in a black discoloration of the silver surface and an increase in electrical resistance in electronic components, leading to reduced conductivity. The silver discoloration preventive agent AC20 forms a strong film on the silver surface, protecting it from sulfide and oxidation. Additionally, the protective film has good solderability and low electrical contact resistance. Being water-based and neutral, it is also easy to treat wastewater. AC-20 provides the highest discoloration prevention effect against sulfur gas among the AC series.

  • Other metal materials
  • LED Module
  • Other Connectors

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Silver tarnish inhibitor AC-410

Silver tarnish inhibitor AC-410

A protective film is formed on the silver surface, which maintains the luster of the silver for a long time. The protective film has good solderability and low electrical contact resistance.

AC-410 is a silver discoloration inhibitor designed to have stronger resistance in discoloration tests in potassium sulfide solution. Among the AC series, AC-410 provides the highest discoloration prevention effect in potassium sulfide solution. It is a silver discoloration inhibitor used to protect the surfaces of electrical and electronic components, as well as jewelry and artifacts, from various harmful environments. The environments affecting silver and silver-plated surfaces are diverse, but particularly in atmospheres containing sulfur gas or in liquids containing sulfides, sulfides form on the silver surface, causing it to appear black. In electronic components, this leads to an increase in electrical resistance and a decrease in conductivity. Silver discoloration inhibitor AC410 forms a strong film on the silver surface, protecting it from sulfide and oxidation. Additionally, the protective film has good solderability and low electrical contact resistance. Being water-based and neutral, it is also easy to treat for wastewater disposal.

  • Other metal materials
  • LED Module
  • Other Connectors

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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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Silver tarnish inhibitor AC-10B

Silver tarnish inhibitor AC-10B

A protective film is formed on the silver surface of large components, maintaining gloss for a long time. It has good solderability and low electrical contact resistance.

It is a silver tarnish inhibitor designed to protect the surfaces of electrical and electronic components, as well as jewelry and utensils made of silver and silver-plated materials, from various harmful environments. The environments that affect silver and silver-plated surfaces are diverse, but particularly when exposed to atmospheres containing sulfur gas, sulfides are generated on the silver surface, resulting in a black discoloration of the silver surface, an increase in electrical resistance in electronic components, and a decrease in conductivity. The silver tarnish inhibitor AC-10B forms a stronger coating on the silver surface compared to AC-10A, protecting it from sulfur gases such as hydrogen sulfide and sulfur dioxide. Additionally, the protective film has good solderability and low electrical contact resistance. AC-10B has been developed for large electrical components. When applied to small components compared to AC-10A, it may result in a sticky surface. AC-10B is a water-based solvent type silver tarnish inhibitor.

  • Other metal materials
  • LED Module
  • Other Connectors

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