Erbium(III) chloride
Erbium(III) chloride (CAS: 10138-41-7), also known as erbium trichloride, is an anhydrous powder with the molecular formula ErCl₃ and a molecular weight of 273.62 g/mol. Supplied at a 99.9% trace metals basis purity, this inorganic salt finds utility as a starting material in chemical synthesis, particularly in the creation of novel cluster compounds for materials science research. Its properties make it a valuable reagent in inorganic chemistry and catalysis.
- IUPAC
- Erbium trichloride
- Synonyms
- Erbium trichloride

Synthesis of Novel Cluster Compounds
Erbium(III) chloride serves as a key starting material for the synthesis of advanced octahedral M₆ cluster compounds, such as CsErTa₆Cl₁₈. These materials are subjects of study for their electronic properties and stability.
Materials Science Research
This compound is employed in materials science for the development of new materials with specific electronic and structural characteristics. Its use in forming complex inorganic structures is of particular interest.
Catalysis and Inorganic Chemistry
As a source of erbium, ErCl₃ is a valuable reagent in inorganic chemistry. Its applications extend to catalysis, where it can be explored for various chemical transformations.
| Molecular weight | 273.62 |
|---|---|
| Linear formula | ErCl3 |
| Assay | 99.9% trace metals basis |
| Grade | anhydrous |
| Form | powder |
| Density | 4.1 g/mL at 25 °C(lit.) |
| Particle size | -10 mesh |
| Melting point | 774 °C(lit.) |
| Application | Starting material for new edge-bridged octahedral M6 cluster compounds such as CsErTa6Cl18, for which electron and stability studies were performed.1 |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Erbium(III) chloride used for?
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Erbium(III) chloride is primarily used as a starting material for synthesizing novel edge-bridged octahedral M₆ cluster compounds and in materials science research. It also finds applications in catalysis and inorganic chemistry.
What is the CAS number and formula for Erbium(III) chloride?
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The CAS number for Erbium(III) chloride is 10138-41-7, and its linear formula is ErCl₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Erbium(III) chloride as an anhydrous powder with an assay of 99.9% trace metals basis. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling Erbium(III) chloride?
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Erbium(III) chloride is a warning chemical that causes skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves, should be used. Handle in a well-ventilated area.
How is Erbium(III) chloride shipped and exported?
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Tech Serve Solutions, a global supplier and exporter, ships and exports Erbium(III) chloride, adhering to all necessary regulations for chemical transport.
How can I request a quote or sample for Erbium(III) chloride?
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To request a quote or sample of Erbium(III) chloride, please contact our sales department through the TSS website or designated contact channels.
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