Product Identification

Product Name

Aluminium hydroxide

Synonyms

Alumina hydrate
Aluminum oxide trihydrate
Trihydroxyaluminum

CAS

21645-51-2

Formula

AlH3O3

Molecular Weight

78

EINECS

244-492-7

RTECS

BD0940000

RTECS Class

Drug; Reproductive Effector; Human Data

Merck

12,355

Beilstein/Gmelin

22216 (G)

Physical and Chemical Properties

Appearance

Odorless, white crystals, powder or granules.

Solubility in water

Insoluble

Melting Point

300

Density

2.1 - 2.7 g/cm3

Usage

Desiccant powder.

First Aid Measures

Ingestion

Do NOT induce vomiting. 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 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

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

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

Causes irritation of the mucous membrane and upper respiratory tract.

Skin

Dust may cause mechanical irritation.

Eyes

Causes eye irritation.

Ingestion

Ingestion of large amounts may cause gastrointestinal irritation. Ingestion of large amounts may cause pain, constipation or diarrhea.

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 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

The toxicological properties of this substance have not been fully investigated.

Exposure limit(s)

MAK:1.5 mg/m3; (1997)

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 irritating, corrosive and/or toxic fumes. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.

Fire Potential

Mixture of bismuth hydroxide and aluminum hydroxide flammable in air. Low.

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. Absorbs carbon dioxide from the air. Gels on prolonged contact with water. Absorbs acids. When coprecipitated with bismuth hydroxide and reduced by Hydrogen, becomes violently flammable in air.

Incompatibilities

Strong oxidizing agents, strong acids, chlorinated rubber, water.

Decomposition

Aluminum oxide.

Transport Information

HS Code

2818 30 00