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Gallium Oxide Toxicology


Introduction
CAS # :12024-21-4
Transition metal oxide
Toxicology
Exists as a white powder.
I-Experimental Toxicology :
Oral LD50 : 10000 mg/kg (mus), therefore low toxicity by ingestion.
Rats exposed by inhalation to gallium oxide 2 hours/day for 20 days developed severe pulmonary inflammation (alveolitis) evolving to fibrosis.
Chronic Toxicity Studies :
Gallium and gallium compounds may cause metallic taste, dermatitis and depression of the bone marrow function. Large doses may cause hemorrhagic + nephritis.
II-Possible Acute Effects :
A-Acute Eye Effects :
May cause eye irritation.
B-Acute Skin Effects :
May cause skin irritation.
C-Acute Inhalation Effects :
May cause respiratory irritation.
D-Acute Ingestion Effects :
May cause irritation in digestive tract.
III-Chronic Effects :
None
First Aid Measures
I-Eyes :
Flush eyes with warm water for 15 minutes, occasionally lifting the upper and lower eyelids. If irritation persists, seek medical attention.
II-Skin Exposure :
Wash with soap and water. If irritation persists, seek medical attention.
III-Inhalation :
Take deep breaths of fresh air and avoid further inhalation of the material.
If irritation persists, seek medical attention.
IV-Ingestion :
Drink 2 cups of water and induce vomiting. Seek immediate medical attention
Fire Fighting Measures
I-Extinguishing Media :
Use water, carbon dioxide, dry chemical extinguishing agents, dry sand or dry ground dolomite
II-Personal Protective :
A-Equipment :
Wear an approved self-contained breathing apparatus and full protective clothing.
B-Decomposition Materials (under fire conditions) :
Not Applicable
Accidental Release Measures
I-Evacuation Procedures and Safety :
Stay away from spill so as to avoid airborne dust. Exposure concerns are limited to inhalation and, in the case of a very large all-surrounding spill, suffocation.
II-Containment of Spill :
Spill should be contained if it can be done without risk.
III-Cleanup and Disposal of Spill :
Do not dispose of spill by dumping into public sewer or any other unauthorized waste treatment system. Spill should be swept up and properly prepared for disposal.
IV-Environment and Regulatory Reporting :
Should spilt material enter an unauthorized waste treatment system, contact the local authorities.
Handling and Storage
I-Minimum/Maximum Storage Temperatures :
None
II-Handling :
Use appropriate respiratory protection when exposure exceeds the established limits. Wash thoroughly after handling.
III-Storage :
Keep containers tightly closed and in cool, dry, well-ventilated areas.
Exposure Controls/Personal Protection
I-Ingestion :
Prevent eating, drinking, tobacco usage and cosmetic application in areas where there is a potential for exposure to the material. Always wash thoroughly after handling.
II-Eye Contact :
To avoid eye contact, wear safety glasses with side shields or chemical goggles.
III-Skin Contact :
To avoid skin contact, wear rubber gloves, boots, long-sleeved shirts, long-pants and head covering.
IV-Respiratory Protection :
To avoid inhalation wear dust mask or self-contained respiratory device.
V-Engineering Controls :
Add ventilation capacity if current environment cannot maintain airborne concentrations below the established exposure limit.
VI-Exposure Guidelines :
None
Stability and Reactivity
I-Chemical Stability :
Stable under normal conditions of storage and handling.
II-Hazardous Polymerization :
Will not occur.
III-Conditions to Avoid :
Not Applicable
IV-Chemical Incompatibility :
Not Applicable
V-Hazardous Decomposition Products :
When heated to decomposition it emits toxic vapors of Ga.
Skin Sensitization
No information is known.
Mutagenicity Data
No information is known.
Reproductive/Teratology Data
No information is known.
Carcinogenicity Data
No information is known.
Ecological Information
Eco-acute Toxicity
Acute toxicity is considered unlikely because of the existence of similar compounds in nature.
References :
1-Occupational Medicine,Carl Zenz, last edition.
2-Clinical Environmental Health and Toxic Exposures, Sullivan & Krieger; last edition.
3-Sax's Dangerous Properties of Industrial Materials, Lewis C., last edition.
4-Toxicologie Industrielle et Intoxications Professionnelles, Lauwerys R.R. last edition.
5-Chemical Hazards of the Workplace, Proctor & Hughes, 4th edition
6-Répertoire Toxicologique de la CSST du Quebec.
7- Pacific Industrial Development Corp, MSDS, Gallium Oxide, January 2002.

Out Bound Links




Edouard Bastarache M.D.
Occupational & Environmental Medicine
Author of "Substitutions for Raw Ceramic Materials"
Tracy, Québec, CANADA

edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/




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