Strontiumfluoride , powder,<5μm , 7783-48-4

Synonym(s):
Strontium difluoride;Strontium difluoride (SrF₂ )

CAS NO.：7783-48-4

Empirical Formula: F2Sr

Molecular Weight: 125.62

MDL number: MFCD00011251

EINECS: 232-000-3

PRODUCT Properties

• Melting point: >1400 °C (lit.)
• Boiling point: 2489 °C (lit.)
• Density: 4.24 g/mL at 25 °C (lit.)
• refractive index: 1.442
• solubility: soluble in dilute acid solutions
• form: powder
• color: White
• Specific Gravity: 4.24
• Odor: odorless
• Water Solubility: 11.7 mg/100 mL (18 ºC)
• Crystal Structure: CaF2 type
• crystal system: Cube
• Merck: 14,8842
• Solubility Product Constant (Ksp): pKsp: 8.36
• Space group: Fm3m
• Lattice constant:
  • a/nm: 0.58
  • b/nm: 0.58
  • c/nm: 0.58
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.1947
• Dielectric constant: 6.4699999999999998
• Exposure limits: ACGIH: TWA 2.5 mg/m3; NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
• Stability: hygroscopic
• CAS DataBase Reference: 7783-48-4(CAS DataBase Reference)
• NIST Chemistry Reference: Strontium fluoride(7783-48-4)
• EPA Substance Registry System: Strontium fluoride (SrF2) (7783-48-4)

Description and Uses

Strontium fluoride is used as an optical material transparent from vacuum ultraviolet (150 nm) to infrared (11 μm) for a small range of special applications. Its optical properties are intermediate to calcium fluoride and barium fluoride. It is also used as an optical coating on lenses.

Safety

• Symbol(GHS): GHS07
• Signal word: Warning
• Hazard statements: H315-H319-H335
• Precautionary statements: P261-P280a-P304+P340-P305+P351+P338-P405-P501a
• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 26-36
• RIDADR: UN3288
• WGK Germany: 2
• RTECS: WK8925000
• Hazard Note: Irritant
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• HS Code: 2826199090