1 - Product Identification

Synonyms: Silver Powder

CAS: 7440-22-4

Formula Weight: 147.86 (100.00% Silver metal by weight)

Chemical Formula: Ag

2 - Composition

Silver: 100%

3 - Hazards     NFPA 704

Health Rating: - 0 Not dangerous

Flammability Rating: 0 - Not flammable

Reactivity Rating: 1 - Reacts with some compounds

Lab Protective Equip: Safety goggles, dust respirator. Good ventilation.

4 - First Aid Measures

Ingestion: If swallowed, give plenty of water. Get medical attention if symptoms appear.

Skin or Eye Contact: Flush with plenty of water. Get medical attention if symptoms appear.

5 - Fire Fighting Measures

Fire: All Metal Powders are flammable. Dry chemical or carbon dioxide should be used on surrounding fire. Do not use water on fire where molten metal is present.

6 - Accidental Release Measures

Wear protective equipment. Clean up in a way that doesn't disperse the powder into the air.

7 - Handling and Storage

Store in a closed container. It does not absorb moisture from the air. It does react with Sulfur in the air, forming silver tarnish; Ag2S (Silver Sulfide).

9 - Physical and Chemical Properties

Appearance: Gray powder.

Odor: Odorless.

Solubility: Not soluble in water.

Theoretical Density: 10.50 grams/cc

Bulk Density: ~.50 grams/cc

pH: none - does not affect the pH of solutions.

Melting Point: 961°C (1,761°F).

Boiling Point: 2,212°C (4,013°F).

10 - Stability and Reactivity

Stability: Stable at room temperature in sealed containers.

Incompatibility: Avoid exposure to acids, acid fumes, acetylene, ammonia, and hydrogen peroxide.

Unusual Fire and Explosive Hazards: Silver powder is a moderate fire hazard when exposed to sparks or flame or by chemical reaction with C2H2, NH3, bromozide, CIF3, ethylenimene, H2SO4, tartaric acid.

Special Note: Silver Powder is especially reactive with Hydrogen Peroxide. It acts as a catalyst, producing Oxygen gas and Water in a violent manner.

11 - Toxicity

Acute oral toxicity: Toxicology not fully investigated.

Inhalation: Unknown. Avoid breathing all metal powders.

14. Transport Information

Non-hazardous for air, sea and road freight.

Not a DOT controlled material.