Germanium dioxide

  • Germania
  • Germanic acid
  • Germanic oxide (Crystalline)
  • Germanium oxide
Formula
GeO2
Structure
Description
White powder.
Uses
Phosphors, transistors and diodes, infrared-transmitting glass.

Registry Numbers and Inventories.
CAS
1310-53-8
EC (EINECS/ELINCS)
215-180-8
RTECS
LY5240000
RTECS class
Reproductive Effector; Human Data
Merck
12,4417
Beilstein/Gmelin
17820 (G)
Swiss Giftliste 1
G-4100
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
GeO2
Formula mass
104.61
Melting point, °C
1110
Density
3.64 g/cm3 (20 C)
Solubility in water
4 g/L
Dielectric constant
5.89 (20 C)
Thermal expansion
7.7E-5/K (20 C)

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation.
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 protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
No data available.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Substance is noncombustible; use agent most appropriate to extinguish surrounding fire.

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause irritation of the digestive tract. May be harmful if swallowed.
   Inhalation
Low hazard for usual industrial handling.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation. When substances becomes wet or comes in contact with moisture of the mucous membranes, it becomes an irritant.

First aid
 
   Ingestion
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.
   Inhalation
Remove from exposure to fresh air immediately. Get medical aid if cough or other symptoms appear.
   Skin
Get medical aid if irritation develops or persists. Flush skin with plenty of soap and water.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.

Transport.