Calcium fluoride
CAS number:7789-75-5
Purity:95%;96%;97%
Usages: Widely used in chemical industry, metallurgy, glass, enamel and cement, etc
Packing: It is packed in woven bag lined with plastic bag. Net weight: 25kg/bag.
Specification
| Name | Special grade(%) | Analytically pure (%) | Chemically pure(%) |
| Content | ≥99.0 | ≥98.5 | — |
| Sulfate(SO4) | ≤0.02 | ≤0.05 | ≤0.15 |
| Chloride(Cl) | ≤0.005 | ≤0.01 | ≤0.02 |
| Ferrum(Fe) | ≤0.003 | ≤0.003 | ≤0.025 |
| Plumbum(Pb) | ≤0.003 | ≤0.003 | ≤0.01 |
| Nitrogenous compound(N) | ≤0.01 | ≤0.005 | ≤0.02 |
| Losses on | ≤2.0(loss on drying) | ≤0.4(105°C) | — |
| Carbonate(CO3) | qualified | qualified | — |
| Silicon(Si) | ≤0.01 | ≤0.01 | ≤0.04 |
Metallurgy level
Application:
metallurgical industry................fluxing agent welding flux
chemical industry.......................Production hydrofluoric acid of raw materials
building material industry...........Glass, ceramic, cement
craft carving................................Decorations, crafts
High precision optical components such as windows, prisms, substrates, beam splitter, optical wedges, cylindrical mirrors, nonspherical mirrors etc
Standard index
| Items | Super Grade A | Super Grade B | Grade A | Grade B |
| CaF 2 , %≥ | 98.5 | 98 | 97 | 96 |
| SiO 2 | 0.2 | 0.4 | 0.6 | 0.8 |
| S | 0.05 | 0.08 | 0.10 | 0.10 |
| P | 0.03 | 0.05 | 0.06 | 0.06 |
| Fe | 0.1 | 0.2 | 0.3 | 0.3 |
| Fineness | 300mesh | 300mesh | 300mesh | 300mesh |
Calcium fluoride crystal (Coating material)
Application:
Our products of optical crystal CaF2 is quality optical materials applying to highprecision optical components such as windows, prisms,substrates, beam splitter, optical wedges, cylindtrical mirrors, nonspherical mirrors etc. It is the most important and main material in apochromatic lenseds system. The outstanding properties at UV band make it used in UV microlithography in electronic chips manufacture aspects. Because of the good properties at UV, Vis and IR band, CaF2optical crystals are applied widely in sciences research , high-tech and civil industry.
Specifications:
Cut off wavelength 0.13~9μm
Transmissivity:90%(0.4~7μm)
Moh's hardness: 4 Gpa
Young modulus:146.1Gpa
Density: 3.18g/cm3
Coefficient of linear expansion: 1.84 x 10-5/k