MATERIAL SAFETY DATA SHEET




I. PRODUCT IDENTIFICATION


Manufacturer/Supplier:

ESPI Metals

1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

E-Mail: sales@espimetals.com


Trade Name:      Gallium Arsenide

Synonym:           Gallium Monoarsenide

Formula:            GaAs

CAS #:                1303-00-0



II. HAZARDOUS INGREDIENTS

 

Hazardous Component:  Gallium Arsenide

%:                                     0-100

OSHA/PEL:                     0.01 mg(As)/m3 

ACGIH/TLV:                   0.01 mg(As)/m3 

Sec 302:                             No

Sec 304:                             Yes 1 lb

Sec 313:                             Yes 

III. PHYSICAL DATA

 

Boiling Point:                   N/E

Melting Point:                  1238 oC

Vapor Density:                 N/E

Specific Gravity:              5.31 g/cc

Molecular Weight:           144.64

Solubility in H2O:            Insoluble

Appearance and Odor:    Dark gray cubic crystals

% Volatiles:                      N/E or N/A



IV. FIRE AND EXPLOSION HAZARDS DATA


Flash Point: N/A

Autoignition Temp: N/E or N/A

Flammable Limits: Lower: N/A  Upper: N/A


Extinguishing Media: Use dry chemical, CO2 or graphite. DO NOT USE WATER OR WATER SPRAY.

Fire Fighting Procedures: Wear NIOSH/MSHA approved self-contained breathing apparatus, flame and chemical resistant clothing, hats, boots, and gloves.

Unusual Fire and Explosion Hazards: When heated to decomposition, gallium arsenide may emit toxic fumes of arsenic. May react with steam, heat, acid and acid fumes to evolve deadly poisonous arsine. Reacts with mineral acids, alkalies and, under some circumstances, with water to produce phosphine.



V. HEALTH HAZARD INFORMATION


Effects of Exposure:


To the best of our knowledge the chemical, physical and toxicological properties of gallium arsenide have not been thoroughly investigated and recorded.


Acute arsenic poisoning from ingestion results in marked irritation of the stomach and intestines with nausea, vomiting and diarrhea. In severe cases, the vomitus and stools are bloody and the patient goes into collapse and shock with weak, rapid pulse, cold sweats, coma and death. Chronic arsenic poisoning may cause disturbances of the digestive system such as loss of appetite, cramps, nausea, constipation or diarrhea.


Gallium and gallium compounds may cause metallic taste, dermatitis and depression of the bone marrow function. Large doses may cause hemorrhagic nephritis.


Acute Effects:


Inhalation: Danger-Poison. May cause irritation to the respiratory system.

Ingestion: Danger-Poison. May cause anorexia, nausea, vomiting, systemic gastrointestinal and skin effects and acute arsenic poisoning.

Skin: May cause severe irritation and skin abnormalities.

Eye: May cause severe irritation.


Chronic Effects:


Inhalation: May cause chronic arsenic poisoning, ulceration of the nasal septum, depression of bone marrow, liver damage and cancer/disease of the blood, kidneys and nervous system.

Ingestion: May cause chronic arsenic poisoning, gastrointestinal disturbances, liver damage and cancer/disease of the blood, kidneys and nervous system.

Skin: May cause irritation, occasional ulceration, spotty pigmentation, dermatitis, skin cancer and keratoses (especially on soles and palms).

Eye: No chronic health effects recorded.


Target Organs: May affect the liver, kidneys, skin, lungs and lymphatic system.

Carcinogenicity: NTP: Yes          IARC: Yes         ACGIH: Yes      OSHA: Yes


EMERGENCY AND FIRST AID PROCEDURES:


INHALATION: Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention immediately.

INGESTION: If conscious, give 1-2 glasses of milk or water and induce vomiting, seek medical attention immediately. Never induce vomiting or give anything by mouth to an unconscious person.

SKIN: Remove contaminated clothing, brush material off skin, wash area with soap and water. Seek medical attention immediately.

EYES: Immediately flush eyes, including under eyelids with large amounts of water. Seek medical attention immediately.



VI. REACTIVITY DATA


Stability: Stable

Conditions to Avoid: Water/moisture, heat.

Incompatibility (Material to Avoid): Water, steam, acids, acid fumes.

Hazardous Decomposition Products: Highly toxic fumes of arsenic, arsine, phosphine.

Hazardous Polymerization: Will not occur



VII. SPILL OR LEAK PROCEDURES


Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective equipment specified in section VIII. Isolate spill area and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust.

Waste Disposal Method: Dispose of in accordance with Local, State and Federal Waste Disposal Regulations.



VIII. SPECIAL PROTECTION INFORMATION


Respiratory Protection (Specify Type): Wear a NIOSH-approved dust-mist-fume cartridge respirator.

Ventilation: Handle under dry protective gas. Handle in a controlled environment. Use local exhaust to maintain concentration of exposure below TLV level for Arsenic.


Eye Protection: ANSI approved safety goggles, or face shield.

Protective Gloves: Neoprene, butyl, PVC, viton

Other Protective Clothing or Equipment: Wear protective clothing to prevent contamination of skin and clothes.



IX. SPECIAL PRECAUTIONS


Precautions to Be Taken in Handling and Storage: Handle under dry protective gas. Protect from humidity and water. Store in tightly closed containers in a cool, dry place. Wash hands and face thoroughly after handling and before meals.

Work Practices: Implement engineering and work practice controls to reduce and maintain concentration of exposure. Handle in a controlled, inert atmosphere. Minimize exposure by using local exhaust and an enclosing process if/when possible. Use good housekeeping and sanitation practices. Do not blow dust off clothing or skin with compressed air. Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.


DOT Regulations:

Hazard Class:                   6.1

Identification Number:    UN1557

Packing Group:                II

Proper Shipping Name:   Arsenic compound, solid, n.o.s. (gallium arsenide)



The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide. ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.



Issued by:            S. Dierks

Date:                    July 2006