- Gallium monoarsenide
Dark gray crystals with a metallic greenish-blue sheen or gray powder.
In semiconductor applications (transistors, solar cells, lasers).
Registry Numbers and Inventories.
Tumorigen; Reproductive Effector
Japan ENCS (MITI)
Melting point, °C
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Wear appropriate protective gloves, clothing and goggles.
Wear a NIOSH-approved half face respirator equipped with an organic vapor/acid gas cartridge (specific for organic vapors, HCl, acid gas and SO2) with a dust/mist filter.
If you spill this chemical, you should dampen the solid spill material with water, then transfer the dampened material to a suitable container. Use absorbent paper dampened with water to pick up any remaining material. Seal your contaminated clothing and the absorbent paper in a vapor-tight plastic bag for eventual disposal. Wash all contaminated surfaces with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Can react with steam, acids and acid fumes Reacts with bases with evolution of hydrogen Attacks quartz.
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
This material is probably combustible.
Containers may explode when heated.
Fire may produce irritating, corrosive and/or toxic gases.
3 µg/m3 TLVH
O, G-A3H, I-1, N-1, CP65
Peripheral neuropathy may develop. Gallium arsenide is not an animal teratogen.
Nausea, vomiting, diarrhea, and abdominal pain may occur.
Direct lung injury, pulmonary edema, or fibrosis may occur, based on experimental animal studies.
Gallium has induced rash, itching, and edema.
Seek medical assistance.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
I; II; III