Product Identification

Product Name

Dipotassium hexafluorozirconate

Synonyms

Dipotassium hexafluorozirconate
Potassium hexafluorozirconate
Potassium zirconium fluoride

CAS

16923-95-8

Formula

F6K2Zr

Molecular Weight

283.39999999999998

EINECS

240-985-6

RTECS

ZH7028400

RTECS Class

Other

Merck

12,7804

Beilstein/Gmelin

40739 (G)

Physical and Chemical Properties

Appearance

A white crystalline solid.

Solubility in water

Slightly soluble

Melting Point

840

Density

3.5 g/cm3

Usage

Manufacture of metallic zirconium.

First Aid Measures

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.

Handling and Storage

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.

Hazards Identification

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.

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.

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.

UN (DOT)

9162

Exposure Controls/Personal Protection

Personal Protection

Wear appropriate protective gloves, clothing and goggles.

Respirators

Wear positive pressure self-contained breathing apparatus (SCBA).

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.

Poison Class

3

Fire Fighting Measures

Fire Fighting

Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.)

Fire Potential

Noncombustible.

Accidental Release Measures

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 and Reactivity

Stability

No data.

Incompatibilities

Reacts as acid to neutralize bases.

Decomposition

When heated to decomposition, emits toxic fumes of hydrogen fluoride.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

9162

Hazard Class

9