Zirconium silicate , Particle size 1.5-5 μm , 10101-52-7

Synonym(s):
Zirconium(IV) silicon oxide

CAS NO.：10101-52-7

Empirical Formula: O4SiZr

Molecular Weight: 183.307

MDL number: MFCD00085353

EINECS: 233-252-7

PRODUCT Properties

• Melting point: 2550 °C
• Density: 4,56 g/cm³
• refractive index: 1.78-1.99
• solubility: insoluble in H2O, acid solutions
• form: nanopowder
• color: Yellow to orange
• Specific Gravity: 4.56
• Odor: Odorless
• Water Solubility: Insoluble in water, acids, alkali and aqua regia.
• Crystal Structure: Zircon
• Hydrolytic Sensitivity: 1: no significant reaction with aqueous systems
• Merck: 14,10181
• crystal system: square
• Space group: I41/amd
• Lattice constant:
  • a/nm: 0.6607
  • b/nm: 0.6607
  • c/nm: 0.5982
  • α/o: 90
  • β/o: 90
  • γ/o: 90
• Dielectric constant: 5（0.0℃）
• Exposure limits: ACGIH: TWA 5 mg/m3; STEL 10 mg/m3; NIOSH: IDLH 25 mg/m3; TWA 5 mg/m3; STEL 10 mg/m3
• Stability: Stable.

Description and Uses

Zircon (ZrSiO4) is an accessory nesosilicate mineral found in granites and, due to its high Mohs hardness of 7.5 and chemical inertness, it concentrates in the weathering products of mother igneous rocks such as in alluvial placer deposits and beach sands. Because of its chemical inertness and high melting point, zircon is wetted less easily by molten metal, producing smoother surfaces on iron, high alloy steel, aluminum, and bronze casting.

Zirconium silicate (ZrSiO4) is one form of the mineral whose crystals when polished are known as cubic zircons, which resemble diamond gemstones.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H332-H335
• Precautionary statements: P261-P305+P351+P338
• Hazard Codes: Xn
• Risk Statements: 20-36/37/38
• Safety Statements: 26-36
• WGK Germany: 3
• TSCA: Yes
• HS Code: 28399090