Zirconium potassium fluoride

  • Potassium hexafluorozirconate
  • Potassium zirconium fluoride
  • Dipotassium hexafluorozirconate
Formula
K2ZrF6
Structure
Description
A white crystalline solid.
Uses
Manufacture of metallic zirconium.

Registry Numbers and Inventories.
CAS
16923-95-8
EC (EINECS/ELINCS)
240-985-6
RTECS
ZH7028400
RTECS class
Other
UN (DOT)
9162
Merck
12,7804
Beilstein/Gmelin
40739 (G)
Swiss Giftliste 1
G-7793
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
F6K2Zr
Formula mass
283.40
Melting point, °C
840
Density
3.5 g/cm3
Solubility in water
Slightly soluble
Viscosity
0.0203 cp (960 C)

Hazards and Protection.
Storage
Keep containers tightly closed in a well ventilated area away from food products. Keep away from heat and water.
Handling
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.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
No data.
Incompatibilities
Reacts as acid to neutralize bases.
Decomposition
When heated to decomposition, emits toxic fumes of hydrogen fluoride.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)
Fire potential
Noncombustible.
Hazards
Some may burn but none ignite readily. May polymerize explosively when heated or involved in a fire. Containers may explode when heated. Some may be transported hot.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
Hyperactive reflexes, painful muscle spasms, weakness and tetanic contractures may be noted due to fluoride induced hypocalcemia. Prenatal fluoride supplementation (2.2 mg NaF or 1 mg fluoride daily) during the last two trimesters of pregnancy has been reported to be safe.
   Ingestion
Epigastric pain, nausea, dysphagia, salivation, hematemesis, and diarrhea may be noted. These effects may be delayed for several hours following exposure. Gi symptoms are noted when 3 to 5 mg/kg of fluoride are ingested.
   Inhalation
Respirations are first stimulated then depressed. Death is usually from respiratory paralysis. Following inhalation, coughing and choking may be noted.
   Skin
Urticaria and pruritus have been reported following exposure to fluoride.
   Eyes
Zirconium and its compounds are eye irritants.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move to fresh air.
   Skin
Wash with soap and water.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
9162
Response guide
Hazard class
9
USCG CHRIS Code
ZPF
 
Std. Transport #
4962667