Chemical Name: Barium zirconate
IUPAC NAME: barium(2+); dioxido(oxo)zirconium ; barium(2+); oxygen(2-); zirconium(4+)
CAS No.: 12009-21-1
EINECS: 250.72
RTECS: CR0875000
Molecular Formula: BaO₃Zn
Molecular Weight: 250.72 g/mol
Melting Point: 2500°C
Following is the structure of Barium zirconium(iv) oxide (CAS No.12009-21-1):

Product Categories about Barium zirconium(iv) oxide (CAS No.12009-21-1) are Metal and Ceramic Science ; Zirconium ; ZirconatesChemical Synthesis ; ZirconiumNanomaterials ; Catalysis and Inorganic Chemistry ; Ceramics ; Materials Science ; Nanomaterials ; Nanoparticles: Oxides, Nitrides, and Other CeramicsMetal and Ceramic Science ; Nanopowders and Nanoparticle Dispersions
The chemical synonymous of Barium zirconium(iv) oxide (CAS No.12009-21-1) are Barium Zirconate ; Barium Zirconium Oxide ; Bariumzirconium(Iv)Oxide ; Bariumzirconiumtrioxide ; Zirconate(Zro32-),Barium(1:1) ; Barium Zirconate, Nanopowder, <50nm, 98.5% ; Barium Zirconate, Powder, <10 Micron ; Barium Zirconium Oxide, 99% (Metals Basis)

Reported in EPA TSCA Inventory. Barium and its compounds are on the Community Right-To-Know List.

Moderately toxic by ingestion and intraperitoneal routes. Inhalation produces interstitial pneumonitis. See also ZIRCONIUM COMPOUNDS and BARIUM COMPOUNDS (soluble).
Hazard Codes: Xn
Risk Statements about Barium zirconium(iv) oxide (CAS No.12009-21-1):
R20/22:Harmful by inhalation and if swallowed.
Safety Statements about Barium zirconium(iv) oxide (CAS No.12009-21-1):
S28:After contact with skin, wash immediately with plenty of soap-suds. 

OSHA PEL: TWA 5 mg(Zr)/m³; STEL 10 mg(Zr)/m³
ACGIH TLV: TWA 5 mg(Zr)/m³; STEL 10 mg(Zr)/m³
DFG MAK: 1 mg(Zr)/m³