Aluminum arsenide

  • Aluminum monoarsenide
Formula
AlAs
Structure
Description
Clear to white granules. No odor.

Registry Numbers and Inventories.
CAS
22831-42-1
EC (EINECS/ELINCS)
245-255-0
Beilstein/Gmelin
13614 (G)
Swiss Giftliste 1
G-6985
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
AlAs
Formula mass
101.90
Melting point, °C
1739.85
Density
3.76 g/cm3
Thermal expansion
0.0000052/K

Hazards and Protection.
Storage
Store in a cool, dry location in a tightly sealed container.
Handling
Handle in a inert gas such as argon. Handle in a controlled atmosphere.
Protection
Use butyl or PVC gloves, safety goggles or face shield. Protective gear suitable to prevent contamination.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Wear appropriate respiratory and protective equipment. 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.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Acids, acid fumes and moisture.
Decomposition
Arsine gas and arsenic fumes.

Fire.
Fire fighting
Use suitable extinguishing media for surrounding material and type of fire. Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes.
Combustion products
When heated or on contact with acid, acid fumes and moisture, aluminum arsenide may emit toxic arsine and arsenic fumes.

Health.
Exposure limit(s)
0.01 mg/m3 as As
Carcinogin
O, G-A1, I-1, N-1, CP65
Poison_Class
1
Exposure effects
Disturbances of the digestive system such as loss of appetite, cramps, nausea, constipation or diarrhea.
   Ingestion
Poison by ingestion. May cause gastrointestinal and skin effects and acute arsenic poisoning. Chronic exposure may cause arsenic poisoning, gastrointestinal disturbances, liver damage, and cancer/disease of the blood, kidneys and nervous system. Aluminum may be implicated in Alzheimers.
   Inhalation
May cause irritation to the respiratory system. May cause laryngitis, bronchitis, and huskiness of the voice. Chronic exposure may cause chronic arsenic poisoning, ulceration of the nasal septum, liver damage and cancer/diseases of the blood, kidneys and nervous system.
   Skin
May cause redness, itching, ulcerations, and pigmentation changes.
   Eyes
May cause redness, itching and burning.

First aid
 
   Ingestion
If conscious, give 1-2 glasses of milk or water and induce vomiting; seek medical attention immediately.
   Inhalation
Remove victim to fresh air; keep warm and quite; give oxygen if breathing is difficult and seek medical attention immediately.
   Skin
Remove contaminated clothing from affected area; brush material off skin; wash affected area with mild soap and water; seek medical attention immediately.
   Eyes
Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention.

Transport.