Triammonium aluminum hexafluoride

  • Ammonium aluminum fluoride
  • Aluminate(3-), hexafluoro-, triammonium, (OC-6-11)-
Formula
(NH4)3AlF6
Structure
Description
Odorless, white to off-white crystals.
Uses
Used in the preparation of pure aluminum fluoride.

Registry Numbers and Inventories.
CAS
7784-19-2
EC (EINECS/ELINCS)
232-052-7
RTECS
BD0050000
Merck
12,555
Canada DSL/NDSL
NDSL
US TSCA
Listed
Korea ECL
Listed

Properties.
Formula
AlF6H12N3
Formula mass
195.09
Density
1.78 g/cm3
Solubility in water
Soluble.

Hazards and Protection.
Protection
Wear goggles or full face protection, rubber gloves and protective clothing. Use only with adequate ventilation or suitable respirator.
Small spills/leaks
Wash up spill with water. After treatment with lime or calcium chloride, dispose to sanitary drain.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong acids, strong bases.

Fire.
Combustion products
Will decompose in general fire yielding hazardous fumes of fluorine, ammonia or NOx.

Health.
Exposure limit(s)
OSHA PEL 2.5 mg/m3 (as F).
Exposure effects
Chronic effects due to fluoride are generally due to fixation of calcium. Damage to teeth and bones results.
   Ingestion
Ingestion may cause nausea,vomiting, diarrhea and abdominal pain.
   Inhalation
Causes irritation.
   Skin
Causes irritation.
   Eyes
Causes irritation.

First aid
 
   Ingestion
If swallowed, give water with calcium-containing antacid or milk to drink and induce vomiting. See a physician.
   Skin
For skin contact, apply calcium gluconate salve. If irritation occurs, see a physician.
   Eyes
Wash thoroughly with water after contact. Get medical attention for eyes.

Transport.
Hazard class
6.1
Packing Group
III