Product Identification

Product Name

Copper(I) oxide

Synonyms

Cuprous oxide
Dicopper oxide
Red copper oxide

CAS

1317-39-1

Formula

Cu2O

Molecular Weight

143.09

EINECS

215-270-7

RTECS

GL8050000

RTECS Class

Agricultural Chemical and Pesticide; Reproductive Effector

Merck

13,2694

Beilstein/Gmelin

5480 (G)

EC Index Number

029-002-00-X

EC Class

Harmful

Physical and Chemical Properties

Appearance

Red-brown cubic crystals.

Solubility in water

Insoluble

Melting Point

1232

Boiling Point

1800

Density

5.7 - 6.2 g/cm3

Usage

Fungicide.

Vapor Density

4.9

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a cool, dry place. Keep container closed when not in use. Storage under a nitrogen blanket has been recommended. Store protected from moisture.

Handling

Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Causes respiratory tract irritation.

Skin

Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.

Eyes

Causes eye irritation.

Ingestion

Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea.

Hazards

Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.

EC Risk Phrase

R 22

EC Safety Phrase

S 22

UN (DOT)

2392

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

May cause reproductive and fetal effects.

Exposure limit(s)

TLV (as Cu, dust and mists): 1 mg/m3; (as Cu, fume: 0.2 mg/m3) (ACGIH 1996). MAK as Cu: ppm; mg/m3 1 (1996).

Poison Class

4

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Fire Potential

The oil used in the emulsion formulations may make the preparation flammable. Cuprous oxide itself is nonflammable. It decomposes at 1800 C.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Incompatibilities

Oxidizing agents, air, and moisture. Violent, potentially explosive reaction with concentrated peroxyformic acid or when heated with aluminum.

Stability

Stable under normal temperatures and pressures.

Decomposition

Irritating and toxic fumes and gases, oxides of copper.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

2392

Hazard Class

3

Packing Group

III