Thulium(III) chloride hexahydrate
Thulium(III) chloride hexahydrate (CAS: 1331-74-4) is a hydrated inorganic salt with the linear formula TmCl₃·6H₂O. Exhibiting a molecular weight of 383.38 g/mol, this compound is typically supplied as a powder. It finds utility as a reagent in chemical synthesis and as a component in materials science research, particularly within inorganic chemistry applications.
- IUPAC
- Thulium trichloride

Chemical Synthesis Reagent
Thulium(III) chloride hexahydrate serves as a valuable precursor and reagent in various chemical synthesis pathways. Its properties are leveraged in the creation of novel inorganic compounds and coordination complexes.
Materials Science Research
This thulium salt is employed in materials science for the development and study of new materials. Its applications may include research into optical materials, phosphors, and magnetic compounds due to the unique properties of thulium.
Inorganic Chemistry
As a source of thulium ions, this compound is utilised in fundamental inorganic chemistry research. It aids in exploring the chemistry of lanthanides and their interactions in different chemical environments.
| Molecular weight | 383.38 |
|---|---|
| Linear formula | TmCl3 · 6H2O |
| Assay | 99.99% trace metals basis |
| Form | powder |

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
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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 Thulium(III) chloride hexahydrate used for?
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Thulium(III) chloride hexahydrate is used as a reagent in chemical synthesis, in materials science research, and within inorganic chemistry.
What are the CAS number and chemical formula?
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The CAS number is 1331-74-4 and the linear chemical formula is TmCl₃·6H₂O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Thulium(III) chloride hexahydrate with an assay of 99.99% (trace metals basis). This product is not represented as USP, BP, EP or other pharmacopoeia grade.
How should Thulium(III) chloride hexahydrate be handled?
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This compound is classified as causing skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including gloves and eye protection, and ensure adequate ventilation. Avoid breathing dust.
How is Thulium(III) chloride hexahydrate packed and shipped?
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Products are carefully packed according to international shipping regulations and exported worldwide by Tech Serve Solutions.
How can I request a quote or sample?
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To request a quote or sample, please contact the Tech Serve Solutions sales team via the website or by phone.
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