Product Identification

Product Name

Silver(I) oxide

Synonyms

Argentous oxide
Disilver oxide

CAS

20667-12-3

Formula

Ag2O

Molecular Weight

231.73

EINECS

243-957-1

RTECS

VW4900000

RTECS Class

Other

Merck

12,8665

Beilstein/Gmelin

9260 (G)

Physical and Chemical Properties

Appearance

Odorless brown-black solid.

Solubility in water

Insoluble

Melting Point

800 - 830

Density

7.14 g/cm3

Usage

Used as a catalyst.

Odor threshold

Odorless

First Aid Measures

Ingestion

Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

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

Skin

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

Eyes

Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed.

Handling and Storage

Storage

Keep away from sources of ignition. Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Keep container tightly closed. Avoid contact with clothing and other combustible materials. Do not get on skin or in eyes. Do not ingest or inhale. Store protected from light. Do not store near combustible materials.

Hazards Identification

Inhalation

May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.

Skin

May cause skin irritation. May cause severe irritation and possible burns.

Eyes

Contact with eyes may cause severe irritation, and possible eye burns.

Ingestion

Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.

Hazards

Strong oxidizer. Contact with combustible materials may cause a fire.

EC Risk Phrase

R 37/38 41

EC Safety Phrase

S 26 37/39

UN (DOT)

1479

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

A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.

Exposure Effects

Chronic inhalation or ingestion may cause argyria characterized by blue-gray discoloration of the eyes, skin and mucous membrances. Chronic skin contact may cause permanent discoloration of the skin.

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. Strong oxidizer. Contact with combustible materials may cause a fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Wear appropriate protective clothing to prevent contact with skin and eyes. Wear a self-contained breathing apparatus (SCBA) to prevent contact with thermal decomposition products. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.

Stability and Reactivity

Incompatibilities

Carbon monoxide, hydrogen sulfide, mercury, selenium, sulfur, phosphorus, potassium, sodium, sodium potassium, seleninyl chloride, auric sulfide, mercury sulfide, antimony sulfide, nitroalkanes, amines, strong oxidizing agents, strong acids, ammonia + ethanol, hydrazine + ethanol, cupric oxide, ammonia.

Stability

Stable under normal shipping and handling conditions. Absorbs carbon dioxide from the air. Explodes on contact with ammonia.

Decomposition

Irritating and toxic fumes and gases, oxygen, silver fumes.

Transport Information

UN Number

1479