Product Identification

Product Name

C.I. 77820

Synonyms

Argentium

CAS

7440-22-4

Formula

Ag

Molecular Weight

107.87

EINECS

231-131-3

RTECS

VW3500000

RTECS Class

Tumorigen

Merck

12,8647

Beilstein/Gmelin

1253 (G)

Physical and Chemical Properties

Appearance

Metal, white, lustrous solid.

Solubility in water

Insoluble

Melting Point

962

Boiling Point

2212

Vapor Pressure

1

Density

10.50 g/cm3 (20 C)

Usage

Manufacture ornaments, for electroplating, ingredient in dental alloys, for making vessels & apparatus used in manufacture medicinal chem, in processing foods & beverages, in handling organic acids, as catalyst in hydrogenation & oxidn processes.

First Aid Measures

Ingestion

Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water. Get medical aid if irritation or symptoms occur.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. No special precautions indicated.

Handling

Wash thoroughly after handling. Wash hands before eating. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation.

Hazards Identification

Inhalation

May cause respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count.

Skin

May cause skin irritation. May cause skin discoloration.

Eyes

May cause eye irritation.

Ingestion

May cause irritation of the digestive tract. Effects may be cumulative. Ingestion of silver compounds may cause abdominal pain, rigidity, convulsions and shock.

Hazards

Dust is flammable.

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 minimize contact with skin.

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.

Exposure limit(s)

TLV (metal): 0.1 mg/m3 (ACGIH 1997). MAK: 0.1 mg/m3; (1996) OSHA PEL: TWA 0.01 mg/m3 NIOSH REL: TWA 0.01 mg/m3 NIOSH IDLH: 10 mg/m3 (as Ag)

Poison Class

-

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. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. 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

Moderate as dust exposed to flame, or by chemical reaction with oxidizers.

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

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong acids, strong bases, ethyleneimine.

Decomposition

Irritating and toxic fumes and gases, silver fumes.

Transport Information

HS Code

7106 91 10