CAS #:

Linear Formula:

Ho2(C2O4)3 • 10H2O

MDL Number:


EC No.:



(2N) 99% Holmium(III) Oxalate Decahydrate
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(3N) 99.9% Holmium(III) Oxalate Decahydrate
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(4N) 99.99% Holmium(III) Oxalate Decahydrate
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(5N) 99.999% Holmium(III) Oxalate Decahydrate
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Holmium(III) Oxalate Decahydrate Properties (Theoretical)

Compound Formula C6H20Ho2O22
Molecular Weight 774.07
Appearance White powder or crystals
Melting Point N/A
Boiling Point N/A
Density N/A
Solubility in H2O N/A
Exact Mass 773.90528 g/mol
Monoisotopic Mass 773.90528 g/mol

Holmium(III) Oxalate Decahydrate Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
RTECS Number N/A
Transport Information NONH for all modes of transport
WGK Germany 3

About Holmium(III) Oxalate Decahydrate

Oxalate IonHolmium Oxalate Decahydrate is highly insoluble in water and converts to the oxide when heated (calcined). Holmium Oxalate Decahydrate is generally immediately available in most volumes. Ultra high purity and high purity compositions improve both optical quality and usefulness as scientific standards. Nanoscale elemental powders and suspensions, as alternative high surface area forms, may be considered. Holmium has the highest magnetic moment (10.6 µB) of any naturally occurring element and has been used to create the highest known magnetic fields as a pole piece or magnetic flux concentrator. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.

Holmium(III) Oxalate Decahydrate Synonyms

Holmium(III) oxalate-10-water, Holmium(3+) trioxalate decahydrate, Oxalic acid holmium(3+) salt decahydrate, Ethanedioic acid, holmium(3+) salt (3:2) decahydrate, Holmium ethanedioate decahydrate, Tri[oxalato(2-)]diholmium decahydrate, CAS 3269-15-6 (anhydrous)

Chemical Identifiers

Linear Formula Ho2(C2O4)3 • 10H2O
MDL Number N/A
EC No. 221-886-7
Beilstein/Reaxys No. N/A
Pubchem CID 25021755
IUPAC Name holmium(3+); oxalate; decahydrate
SMILES C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].C(=O)(C(=O)[O-])[O-].O.O.O.O.O.O.O.O.O.O.[Ho+3].[Ho+3]
InchI Identifier InChI=1S/3C2H2O4.2Ho.10H2O/c3*3-1(4)2(5)6;;;;;;;;;;;;/h3*(H,3,4)(H,5,6);;;10*1H2/q;;;2*+3;;;;;;;;;;/p-6

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Holmium products. Holmium (atomic symbol: Ho, atomic number: 67) is a Block F, Group 3, Period 6 element with an atomic radius of 164.93032. Holmium Bohr ModelThe number of electrons in each of Holmium's shells is [2, 8, 18, 29, 8, 2] and its electron configuration is [Xe] 4f11 6s2. Elemental Holmium PictureThe holmium atom has a radius of 176 pm and its Covalent radius is 192±7 pm. Holmium was first discovered by Marc Delafontaine in 1878. In its elemental form, holmium has a silvery white appearance. It is relatively soft and malleable. It is stable in dry air at room temperature but rapidly oxidizes at elevated temperatures and in moist air. Holmium has unusual magnetic properties. Its name is derived from the Latin word Holmia meaning Stockholm.


October 17, 2021
Los Angeles, CA
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