LaF₃

99.9-99.99, ≥99.99

1450

0.15-12

1.58

Deep ultraviolet higher refractive index material, Laser crystal materials, Scintillation crystal material, etc

CeF₃

99.9-99.99, ≥99.99

1429

0.3-13

1.63

Infrared low refractive index materials, Laser crystal materials, etc

PrF₃

99.9-99.99, ≥99.99

1400-1600

0.22-15

1.51

Infrared low refractive index materials, additive to carbon rod, etc

NdF₃

99.9-99.99, ≥99.99

1410

0.2-14

1.61

Deep ultraviolet higher refractive index material, Laser crystal materials, Scintillation crystal material, etc

DyF₃

99.9-99.99, ≥99.99

2500

0.22-16

1.48

Infrared low refractive index materials, Crystal material, etc

YF₃

99.9-99.99, ≥99.99

1100

0.19-12

1.49

Infrared low refractive index materials, Laser crystal materials, Upconversion fluorescence materials, etc

YbF₃

99.9-99.99, ≥99.99

1335

0.22-12

1.52

Infrared low refractive index materials, Laser crystal materials, Doping materials for optical fiber, etc

GdF₃

99.9-99.99, ≥99.99

2200

0.32-15

1.8

Antireflective coating, Laser crystal materials, Thermal spraying, etc

YF₃+BaF₂

99.9-99.99, ≥99.99

1290

0.19-17

1.47-1.52

Antireflective coating, Laser crystal materials, etc

EuF₂

99.9-99.99, ≥99.99

-

-

-

Ion activated source for fluorescent material, Thermal spraying, Display materials, etc

REF3

99.9-99.99, ≥99.99

-

-

1.6

Optical film for special optical requirement, can display different color at different light source

MgF2

99.9-99.99, ≥99.99

1100-1250

0.13-18

1.38

Antireflective coating, etc