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Cuprous Oxide 97% powder ≤7 μm
  • 25g Cuprous Oxide 97% powder ≤7 μm

  • $ 74.40000000
  • 500g Cuprous Oxide 97% powder ≤7 μm

  • $ 105.80000000
  • 2kg Cuprous Oxide 97% powder ≤7 μm

  • $ 298.60000000
  • 12kg Cuprous Oxide 97% powder ≤7 μm

  • $ 968.00000000

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Cuprous oxide is one of the principal oxides of copper, the other being CuO or cupric oxide. This red-coloured solid is a component of some antifouling paints. The compound can appear either yellow or red, depending on the size of the particles. Copper(I) oxide is found as the reddish mineral cuprite. Cuprous oxide is commonly used as a pigment, a fungicide, and an antifouling agent for marine paints. Rectifier diodes based on this material have been used industrially as early as 1924, long before silicon became the standard. Copper(I) oxide is also responsible for the pink color in a positive Benedict's test.

Molar mass
145.107 g/mol
CAS Number
6 g/mL at 25°C (77°F)
Dark red powder, ≤7 μm
Melting point/freezing point
1,230°C (2,246°F)
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