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Zirconium dioxide  Structure

Zirconium dioxide

Chemical Properties

Melting point 2700 °C(lit.)
Boiling point 5000 °C(lit.)
Density  5.89 g/mL at 25 °C(lit.)
Flash point 5000°C
solubility  insoluble
form  powder
color  White
Specific Gravity 5.89
PH 4-5
Resistivity 2.3 × 10*10 (ρ/μΩ.cm)
Water Solubility  insoluble
Crystal Structure Monoclinic; Tetragonal; Cubic
Merck  14,10180
Exposure limits ACGIH: TWA 5 mg/m3; STEL 10 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
Dielectric constant 12.5(0.0℃)
Stability Stable.
InChIKey RVTZCBVAJQQJTK-UHFFFAOYSA-N
CAS DataBase Reference 1314-23-4(CAS DataBase Reference)
Indirect Additives used in Food Contact Substances ZIRCONIUM OXIDE
FDA 21 CFR 176.170; 310.545
EWG's Food Scores 1-4
FDA UNII S38N85C5G0
NIST Chemistry Reference Zirconium dioxide(1314-23-4)
EPA Substance Registry System Zirconium oxide (1314-23-4)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H315-H318-H222-H229-H319-H335-H314
Precautionary statements P264-P280a-P305+P351+P338-P310a-P321-P332+P313-P210-P211-P251-P280i-P410+P412-P260h-P301+P330+P331-P303+P361+P353-P405-P501a-P261-P304+P340
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36/37-39-36
HS Code  28256000
NFPA 704:
0
1 0

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