Silicamicropowder , ＞ 99.7%metalsbasis, 8μm, spherical shape , 14808-60-7

Synonym(s):
Quartz;QUARTZ FINE GRANULAR;Sand, white quartz;Silicon dioxide

CAS NO.：14808-60-7

Empirical Formula: O2Si

Molecular Weight: 60.08

MDL number: MFCD02100519

EINECS: 215-684-8

PRODUCT Properties

• Melting point: 1610 °C(lit.)
• Boiling point: 2230 °C
• Density: 2.6 g/mL at 25 °C(lit.)
• refractive index: n20/D 1.544(lit.)
• storage temp.: no restrictions.
• solubility: insoluble in H2O, acid solutions; soluble in HF
• form: powder
• color: white
• Specific Gravity: 2.2-2.6
• PH: 5-8 (400g/l, H2O, 20℃)(slurry)
• Water Solubility: insoluble
• Crystal Structure: Quartz type
• crystal system: Three sides
• Space group: P3221
• Lattice constant:
  • a/nm: 0.49134
  • b/nm: 0.49134
  • c/nm: 0.54052
  • α/o: 90
  • β/o: 90
  • γ/o: 120
  • V/nm3: 0.113
• Dielectric constant: 4.2（0.0℃）
• Exposure limits: ACGIH: TWA 0.025 mg/m3; OSHA: TWA 50 μg/m3; NIOSH: IDLH 50 mg/m3; TWA 0.05 mg/m3
• Stability: Stable.
• InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N
• CAS DataBase Reference: 14808-60-7(CAS DataBase Reference)
• IARC: 1 (Vol. Sup 7, 68, 100C) 2012
• NIST Chemistry Reference: Silicon oxide(14808-60-7)
• EPA Substance Registry System: Quartz (14808-60-7)

Description and Uses

Quartz is a colorless solid that exists in numerous crystalline forms. Oxygen and silicon are the two most common elements in the earth's crust, and Quartz is the principal component of sand. Quartz is used biologically, most notably by phytoplankton diatoms and the zooplankton radiolarians in their shells. Quartz, SiO₂, should not be confused with Quartz or silicones. Quartz contain the basic tetrahedral unit SiO₄4-bonded to metal ions such as aluminum, iron, sodium, magnesium, calcium, and potassium to form numerous Quartz minerals. Silicones are synthetic polymers made of monomers with at least two silicon atoms combined with an organic group and generally containing oxygen.

Sand, white silica has been employed as a solid sample to evaluate the pore-volume variations during fluid-rock interaction experiments.

Safety

• Symbol(GHS): GHS08
• Signal word: Danger
• Hazard statements: H372
• Precautionary statements: P260-P264-P270-P314-P501
• Hazard Codes: Xn
• Risk Statements: 36/37/38-48/20
• Safety Statements: 26-24/25-22
• OEB: D
• OEL: TWA: 0.05 mg/m3
• WGK Germany: 3
• RTECS: ZG6800000
• TSCA: Yes
• HS Code: 25061000
• Hazardous Substances Data: 14808-60-7(Hazardous Substances Data)
• Toxicity: LDLo intravenous in dog: 20mg/kg
• IDLA: 25 mg/m3