Gallium nitride

  • Gallium mononitride
Formula
GaN
Structure
Description
Yellow-gray to black plates.
Uses
Semiconductors.

Registry Numbers and Inventories.
CAS
25617-97-4
EC (EINECS/ELINCS)
247-129-0
22 24/25
RTECS
LW9640000
RTECS class
Other
Beilstein/Gmelin
37799 (G)
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
GaN
Formula mass
83.73
Melting point, °C
800
Density
6.1 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
2.429 (20 C)
Dielectric constant
9.5
Thermal expansion
3.17E-6/K

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles.
Respirators
Government approved respirator.
Small spills/leaks
Sweep up, place in a bag and hold for waste disposal. Avoid raising dust. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures. Ammonia is formed upon contact with water or humid air. Sensitive to moisture.
Incompatibilities
Strong oxidizing agents.
Decomposition
Ammonia.

Fire.
Fire fighting
Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions.

Health.
Exposure effects
Irritant. May cause sensitization by skin contact. Target organ(s): Bone marrow.
   Inhalation
Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water.
   Eyes
In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.

Transport.