Description
Holmium(III) oxide is a high-purity rare-earth oxide supplied in the ROTI®METIC 99,99 % (4N) grade for demanding analytical and materials work. Identified by CAS number 12055-62-8 and EG nr. 235-015-3, it has the empirical formula Ho₂O₃, a molar mass of 377,86 g/mol and a density of 8,41 g/cm³, with a boiling point of 3900 °C. This from manufacturer Carl ROTH suits preparation of holmium standards, optical and laser materials research, and specialised inorganic synthesis where tightly controlled metal purity is essential. The fine oxide form dissolves or converts readily under established laboratory protocols, supporting calibration, doping studies and solid-state chemistry. Clear labelling of CAS, molar mass and density helps laboratories document reagents consistently across quality systems. Use appropriate personal protective equipment and consult the safety documentation before handling. The compact unit size is practical for method development, reference work and low-volume production trials without excess inventory.
This article is part of Spectroscopy & physical property standards, in Analytical standards & reference materials.
Key features
- Assay (metals basis): 99,99 %
- CAS number: 12055-62-8
- Pack sizes: 10 g, 50 g
- EG nr.: 235-015-3
- Purity: ROTI®METIC 99,99 % (4N)
- Empirical formula: Ho₂O₃
- Molar mass: 377,86 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Holmium(III) oxide, ROTI®METIC 99,99 % (4N), 10 g, plastic
What is this article?
Holmium(III) oxide, ROTI®METIC 99,99 % (4N), 10 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Spectroscopy & physical property standards, inside Analytical standards & reference materials, in Lab chemicals.
These standards check a physical or optical measurement: a refractive-index liquid, a wavelength standard, a viscosity oil, a melting-point substance. The stated value and its uncertainty are the product. They are not general reagents.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
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The category is Analytical standards & reference materials. The sub-category is Spectroscopy & physical property standards. The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Volumetric standard solutions (titration), Reagents for analysis (Ph. Eur., ASTM, DIN) and Indicators & indicator solutions.
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