Sulfuric acid type tin plating brightener

Sn-807 bright tin plating additive can produce a mirror-bright coating. The anti-tarnish coating has excellent corrosion resistance and weldability, and is suitable for rack plating and barrel plating. Sn-807 bright acid tin plating additive bath is highly stable and easy to maintain.

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Product Description

Sulfuric acid type tin plating brightener

Sn-807 Bright Acidic Tin Plating Additive

Sn-807 bright tin plating additive can produce a mirror-bright coating. The anti-tarnish coating has excellent corrosion resistance and weldability, and is suitable for rack plating and barrel plating. Sn-807 bright acid tin plating additive bath is highly stable and easy to maintain.


Salient features:

     ·Wide operating range.

     ·The plating solution is highly stable.

     ·Even after storage, it still maintains its good ductility and weldability.

     ·The amount of brightener is small.


Bath composition




Stannous sulfate

24-35 g/l

30 g/l

sulfuric acid



Sn-807A softener



Sn-807B brightener




Operating conditions


Rack plating





Cathode current density

0.5-3.5 A / dm 2

0.5-1.0 A / dm 2

Anode current density

1.0-2.0 A / dm 2

1.0 A / dm 2


Recommended for filtering


Cathode rod movement


99.99% pure tin


Bath preparation

     Add 3-5% sulfuric acid and 1.0 ml/liter Sn-807A softener to the plating tank to settle overnight. Then rinse thoroughly with clean water.

     Fill the plating tank with half of distilled water or deionized water, and add 10% volume of chemically pure sulfuric acid to the plating tank.

     While stirring, add appropriate amount of stannous sulfate and distilled water. Add water to make up the water level and cool to room temperature.

     Add appropriate amount of Sn-807A softener and Sn-807B brightener. At this time, the preparation of the plating solution is completed and can be used for production.


The concentrations of tin metal and sulfuric acid are as follows:




Tin metal



Rack plating

10-20 g/l

15 g/l


7.5-16 g/l

10 g/l

sulfuric acid



Rack plating







     Low tin content is suitable for barrel plating to reduce the loss of plating solution. Sn-807A softener and brightness compensator depend on the required brightness requirements, bring out the loss and operating temperature and other factors.

Sn-807B brightener 100-200ml/kA hour

Sn-807A softener 200-300ml/kA hour

The amount of Sn-807A softener used in barrel plating is more than that in rack plating.

Sulfuric acid type tin plating brightener FAQ

1. Q: Do you make the products yourself? Are you a trader or a manufacturer?

     A: Yes, the products are produced by our company. Our company is a manufacturer focusing on the R&D and manufacturing of environmental protection electroplating additives. Our factory has 5000 square meters with an annual capacity of 15000 tons.

2. Q: Can your company send samples for trial?

     A: We can provide samples for trial.

3. Q: What is the quality of your products?

     A: Our company all products core raw materials is used by Germany BASF, American Dow Chemical and other international brand products. The production process is strictly in accordance with the ISO9001 quality management system, from the incoming inspection, product inspection, according to the strict inspection standard, ensure that every drop of products qualified. Product quality you can rest assured, like BYD, Huawei, Foxconn such enterprises are also using our products.

4. Q: How long is the shelf life of your products?

     A: The shelf life of our products is two years. If you do not use up the products within a short time after you buy them, we suggest you store them in a cool place, not in the sun or in a high temperature environment.

5. Q: Are your products environmentally safe?

     A: Our products have passed the SGS test and are recognized as "Green and Environment-friendly Promotion Products". Many auto parts and electronic products which use our products can pass the strict environmental protection test when they are exported to Europe and America. Therefore, we can be trusted in terms of environmental protection and safety.

6. Q: Can your company provide technical services?

     A: Yes, our company has a technical service team of more than 10 people. The technical engineers all have more than 20 years' experience in electroplating factory. They can provide customers with comprehensive technical of pre-sales and after sales.

7. Q: Is it possible to visit your company?

     A: Yes, of course. You are very welcome! We can meet you at Jieyang airport, If you can come to our city. Also you can visit our factory through live video.

8. Q: Can you customize products according to our needs?

     A: Yes, our company has research and development strength, the product formula derived from Europe and the United States laboratory, European and American engineers technical support, work together with domestic universities. Our company has a member of Guangdong province expert enterprise workstation, Shantou university science and technology correspondent workstation, Jieyang city environmental protection engineering research center for electroplating additive.Therefore, it can meet all kinds of customized requirements proposed by customers.

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