Erbium(III) sulfate

Erbium(III) sulfate

Names
IUPAC name Erbium(III) sulfate
Other names Dierbium trisulphate Erbium Sulfate
Identifiers
CAS Number	13478-49-4 Anhydrous 10031-52-4 Octahydrate
3D model (JSmol)	Interactive image
ChemSpider	145961
ECHA InfoCard	100.033.421
EC Number	680-959-5
PubChem CID	166829
UNII	859WC72L9X
CompTox Dashboard (EPA)	DTXSID40648465
InChI InChI=1S/2Er.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6 Key: SYDXSHCNMKOQFW-UHFFFAOYSA-H
SMILES [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Er+3].[Er+3]
Properties
Chemical formula	Er2O12S3
Molar mass	622.69 g·mol−1
Appearance	pink crystalline solid
Density	3.678 g/cm3 (anhydrous) 3.217 g/cm3 (octahydrate)
Melting point	400 °C (752 °F; 673 K) decomposes (octahydrate)
Solubility in water	octahydrate 160 g/L (20 °C) 65.3 g/L (40 °C)
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Erbium(III) sulfate is an erbium compound with the chemical formula Er₂(SO₄)₃. It is a pink crystalline salt, readily absorbing water to form an octahydrate. ^[1] It is used as a colorant in glass manufacturing and porcelain enamel glazes, as well as a dopant in the production of optical fiber. ^[2]

Synthesis

Erbium sulfate can be prepared by dissolving erbium(III) oxide in sulfuric acid: ^[3]

Er₂O₃ + 3 H₂SO₄ → Er₂(SO₄)₃ + 3 H₂O

References

1. Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. ISBN   978-1-4398-1462-8.
2. "Erbium(III) sulfate octahydrate, 99.9% (REO) 10 g | Buy Online | Thermo Scientific Chemicals". www.thermofisher.com. Retrieved 2025-08-12.
3. Wickleder, Mathias S. (1998-10-01). "Synthesis, Crystal Structure, and Thermal Behavior of the Rare Earth Sulfates (H₅O₂)M(SO₄)₂ (M = Ho, Er, Y)". Chemistry of Materials. 10 (10): 3212–3216. doi:10.1021/cm980301w. ISSN   0897-4756.