Cuprous oxide

Cuprous oxide (CAS No. 1317-39-1), with the molecular formula Cu2O, is an inorganic compound appearing as a brownish-red to red crystalline powder. It is a significant oxide of copper, valued for its semiconductor properties and its potent biocidal activity. It is insoluble in water but soluble in ammonia and acids. Its most prominent application is as a highly effective antifouling agent in marine paints to prevent the growth of organisms on ship hulls.

  • Synonyms:

    Copper(I) oxide, Dicopper oxide, Red copper oxide

  • Formula:

    Cu2O

  • CAS NO.:

    1317-39-1

  • Package:

    25kg bag

  • Certificate:

    ISO9001

Our Achievement

Global Reach: Our Cuprous oxide has been successfully exported and applied in key markets across the globe, including but not limited to Germany, Japan, South Korea, Norway, Singapore, and the United Arab Emirates. Our product consistently meets diverse international standards and specifications.


Equivalent Alternatives: In the global market, our product serves as a reliable and cost-effective alternative to leading producers such as Mitsubishi Chemical, Univertical, American Chemet and Grillo-Werke.



Key Applications
  • Marine Antifouling Paints
  • Agricultural Fungicide
  • Pigment for Ceramics & Glass
  • Photocatalytic Applications
  • Semiconductor Material
  • Wood Preservative
The main detailed uses of the product
  • Marine Antifouling Paints
    Marine Antifouling Paints

    Primarily used as the active ingredient in antifouling coatings for ship hulls and underwater structures. It continuously releases copper ions to prevent the attachment and growth of barnacles, algae, and other marine organisms, reducing drag and fuel consumption.

  • Agricultural Fungicide
    Agricultural Fungicide

    Used as a fungicide to control various fungal and bacterial diseases on fruits, vegetables, and ornamental plants, such as apple scab and potato blight.

  • Pigment for Ceramics & Glass
    Pigment for Ceramics & Glass

    Employed as a colorant to produce red, pink, and brown glazes in ceramics and as a coloring agent in ruby glass, imparting a distinctive red hue.

  • Photocatalytic Applications
    Photocatalytic Applications

    Studied and used as a photocatalyst in research and applications for water splitting to produce hydrogen, leveraging its semiconductor properties.

Why Choose Our Cuprous oxide?

Our Cuprous oxide is characterized by its high purity, consistent biocidal efficacy, and reliable performance. We offer:


Effective Antifouling Performance: Provides long-lasting and broad-spectrum protection against marine biofouling, crucial for maintaining vessel efficiency and reducing maintenance costs.

High Chemical Purity: Ensures predictable reactivity and performance, whether used in coatings, agriculture, or as a specialty chemical.

Technical Grade Availability: Supplied in grades tailored for specific industrial applications, ensuring optimal results.

Regulatory Compliance Support: Our products are managed with attention to evolving environmental regulations concerning copper-based antifoulants.


Choosing our Cuprous oxide means selecting a proven, high-performance active ingredient for demanding applications in marine and industrial sectors.

Commitment to Quality and Innovation

We are committed to providing high-quality Cuprous oxide that meets stringent international standards. Our focus on innovation and sustainability ensures that our products not only enhance your applications but also align with evolving environmental regulations and industry trends.

Your questions about our products