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 tarnish inhibitor designed to have stronger resistance in discoloration tests in potassium sulfide solution. Among the AC series, AC-410 provides the highest tarnish prevention effect in potassium sulfide solution. It is a silver tarnish 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 gases or in liquids containing sulfides, sulfides form on the silver surface, causing it to appear black, increasing electrical resistance in electronic components, and reducing conductivity. The silver tarnish inhibitor AC-410 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 in wastewater disposal.
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basic information
■ There is no flammability or combustibility due to the water-based silver discoloration inhibitor. ■ After immersing silver products in AC-410, rinsing with water and drying will form a strong protective film on the silver surface. ■ It has good solderability, making it widely used in various electrical and electronic components. ■ Properties Appearance: Colorless transparent liquid Specific gravity: 1.02±0.05 (25°C) Solvent: Water pH: 6.0±0.5 (concentrate) Dilution rate: 10-25% ■ Instructions for Use Place the concentrate in a stainless steel or plastic container, immerse the rinsed silver and silver-plated items for 1-2 minutes, then rinse with water and dry with air or warm air. Treatment temperature: Room temperature to 60°C (optimal temperature 50-60°C) - Silver material → AGR-100 → rinse → AC-70 treatment → rinse → dry * If the surface is not clean, a rust prevention film will not form. - Silver plating → rinse → AC-70 treatment → rinse → dry ■ Packaging: 18kg per container
Price range
P2
Delivery Time
P3
Applications/Examples of results
There are many achievements in preventing rust and discoloration of silver products, such as electrical and electronic components for heavy electrical equipment, connectors, and LEDs.
Detailed information
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Silver discoloration test This is the resistance test result of the silver discoloration inhibitor AC-410 against potassium sulfide aqueous solution. AC-410 shows strong resistance to immersion in a 2% potassium sulfide aqueous solution, which is the European standard.
Line up（1）
| Model number | overview |
|---|---|
| AC-410 | ＜New Product＞This is a water-soluble silver tarnish inhibitor. It forms a uniform tarnish prevention film on the silver surface, preventing tarnishing. It can be used over a wide pH range (4.0 to 10.0). The formation of the tarnish prevention film does not affect contact resistance. Being neutral, no neutralization treatment or other operations are required upon disposal. |
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Company information
Asahi Corporation has been listening to our customers' requests and striving to develop products that meet their needs since our founding in 1958. So far, we have released a variety of products, including cleaning agents for kitchen areas, car shampoos and waxes for car wash machines, as well as copper and silver tarnish prevention agents. In recent years, there has been a growing demand for environmentally friendly chemicals, leading to an increase in requests for degreasers, cleaning agents, tarnish prevention agents for semiconductors, and high heat-resistant tarnish prevention agents that do not use strong acids or strong alkalis. Our products have been developed in response to such voices from the beginning. We will continue to listen to a variety of feedback and develop new products.