Black passivator for zinc-nickel alloy plating

Zn-327 produces a black decorative passivation layer with high corrosion resistance on the zinc-nickel alloy coating with a nickel content of 12-18% through a simple dipping process. Suitable for rack plating and barrel plating, with high tolerance to zinc impurities.

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Product Description

Product Name: Zinc-nickel alloy trivalent chromium black passivator Packing specification: 25kg/barrel
Product appearance: clear and transparent to dark green liquid PH value: 2.0-5.0
Specific gravity: 1.06-1.15 Solubility in water: all   dissolved
Storage method: Ventilated and dry place Shelf life: 2 years

Instructions for use








40-90 seconds

PH value



Mechanical stirring or air stirring

Drying 60-80°C 10-25 minutes

Product features



Does not contain

hexavalent chromium,

lead, cadmium and

other harmful heavy


Green products, through SGS product

testing and certification, in line with ROHS,

ELV regulatory requirements, suitable for

European and American export orders

  SGS product


passivation film



A deep black uniform

passivation film can

be obtained

The film is dense and strong, with good anti-collision and scratch resistance;

suitable for auto parts products with

hardness and wear resistance



Excellent corrosion


Nano sealing agent is added to the

product, which has good anti-rust ability.

When the thickness of the coating is

≥5-8 microns, the resistance to NSS>350

hours can meet the functional

requirements of auto parts

  Excellent corrosion


temperature resistance

Good temperature


The passivation film is baked at a

temperature of 120°C, the appearance is

rarely changed, and its NSS resistance can

still exceed 350 hours


High impurity


High tolerance to metal impurities in the

passivation working fluid, zinc>7g,

iron>100mg,can reduce the time of

production shutdown and the loss of the

passivator, saving cost



High tolerance



Low consumption

and economical

Source manufacturer, concentrated

type, durable and affordable

Scope of application

Scope of application

About us

Qualification strength

R & D strength

Cooperation brand


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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