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CAS 1317-39-1

CAS 1317-39-1 matches 0 EU annex records across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 1317-39-1
CAS 1317-39-1PubChem CID 18346908

Copper oxide (Cu2O)

Copper(I) oxide is an oxide of copper. It is found naturally as the mineral cuprite and is formed by the slow oxidation of copper when exposed to oxygen. Copper(I) oxide is commonly used as a pigment, a fungicide, and an antifouling agent for marine paints. It is also a semiconductor. Copper is a chemical element with the symbol Cu and atomic number 29. Copper is an essential elements in plants and animals as it is required for the normal functioning of more than 30 enzymes. It occurs naturally throughout the environment in rocks, soil, water, and air. (L277, L278, L288) — Toxin and Toxin Target Database (T3DB)

IUPAC name
copper;oxocopper
Molecular formula
Cu2O
Molecular weight
143.09 g/mol
Exact mass
141.854109 Da
Topological polar surface area
17.1 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
1
Covalent units
2
Defined stereocentres
0

Also known as

(cupriooxy)copperRefChem:1082154Brown copper oxideCaocobreCaswell No. 266CI 77402Copoxcopper (I) oxide
16 more reported names
Copper hemioxideCopper NordoxCopper oxide, redCopper protoxideCopper SandozCopper sardezCopper suboxideCopper(1+) oxideCopper(I) oxideCopper-sandozCupper oxideCupramarCuprocideCuprous Oxide Type TwoCuprous Oxide, AA GradeDicopper monoxide
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Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 1317-39-1

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How CAS 1317-39-1 is used on this site

CAS 1317-39-1 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 0 EU annex records share this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 1317-39-1 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.