Erbium(III) fluoride
Other names
Erbium trifluoride
3D model (JSmol)
ECHA InfoCard 100.033.946 Edit this at Wikidata
EC Number
  • 237-356-3
  • InChI=1S/Er.3FH/h;3*1H/q+3;;;/p-3
  • [F-].[F-].[F-].[Er+3]
Appearance pinkish powder[1]
Density 7.820g/cm3[1]
Melting point 1,146 °C (2,095 °F; 1,419 K)[2]
Boiling point 2,200 °C (3,990 °F; 2,470 K)[1]
GHS labelling:
GHS06: ToxicGHS07: Exclamation mark
H301, H311, H315, H319, H331, H335
P261, P264, P270, P271, P280, P301+P310, P302+P352, P304+P340, P305+P351+P338, P311, P312, P321, P322, P330, P332+P313, P337+P313, P361, P362, P363, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Erbium(III) fluoride is the fluoride of erbium, a rare earth metal, with the chemical formula ErF3. It can be used to make infrared light-transmitting materials[3] and up-converting luminescent materials.[4]


Erbium(III) fluoride can be produced by reacting erbium(III) nitrate and ammonium fluoride:[5]

Er(NO3)3 + 3 NH4F → 3 NH4NO3 + ErF3


  1. ^ a b c d "Erbium Fluoride".
  2. ^ Watanabe, Sou; Adya, Ashok K.; Okamoto, Yoshihiro; Akatsuka, Hiroshi; Matsuura, Haruaki. Structural analysis on molten rare-earth fluorides. Journal of the Indian Chemical Society, 2005. 82 (12): 1059-1063. ISSN 0019-4522.
  3. ^ 苏伟涛, 李斌, 刘定权,等. 氟化铒薄膜晶体结构与红外光学性能的关系[J]. 物理学报, 2007, 56(5):2541-2546.
  4. ^ Yingxin Hao, Shichao Lv, Zhijun Ma, Jianrong Qiu (2018). "Understanding differences in Er 3+ –Yb 3+ codoped glass and glass ceramic based on upconversion luminescence for optical thermometry". RSC Advances. 8 (22): 12165–12172. doi:10.1039/C8RA01245H. ISSN 2046-2069. PMC 9079277. PMID 35539388.((cite journal)): CS1 maint: multiple names: authors list (link)
  5. ^ Linna Guo, Yuhua Wang, Zehua Zou, Bing Wang, Xiaoxia Guo, Lili Han, Wei Zeng (2014). "Facile synthesis and enhancement upconversion luminescence of ErF3 nano/microstructures via Li+ doping". Journal of Materials Chemistry C. 2 (15): 2765. doi:10.1039/c3tc32540g. ISSN 2050-7526. Retrieved 2019-03-26.((cite journal)): CS1 maint: multiple names: authors list (link)

Further reading