Thulium(III) fluoride
Thulium(III) fluoride (TmF3), CAS No. 13760-79-7, is a chemical compound with a molecular weight of 225.93 g/mol. This anhydrous powder is primarily utilised in glass doping applications, particularly for enhancing mid-infrared emission in oxyfluoride glass ceramics. Available at a high purity of 99.99%, it serves as a valuable material in specialised optical and materials science research and development.

Glass Doping
Thulium(III) fluoride is employed as a dopant in various types of glass. Its incorporation can modify the optical properties of the glass, influencing its absorption and emission characteristics.
Mid-IR Emission Enhancement
This compound is specifically used to enhance mid-infrared emission in oxyfluoride glass ceramics. Such materials are of interest for applications in photonics and laser technology.
Materials Science Research
As a high-purity inorganic salt, TmF3 finds application in materials science research, contributing to the development of novel materials with specific optical or electronic properties.
| Molecular weight | 225.93 |
|---|---|
| Linear formula | TmF3 |
| Assay | 99.99% |
| Grade | anhydrous |
| Form | powder |
| Application | • Used for glass doping1• Used to enhance mid-IR emission in oxyfluoride glass ceramics2 |

Hazard statements
- H301Toxic if swallowed
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3288 6.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T |
| Risk statements (R) | 23/24/25-32 |
| Safety statements (S) | 26-36/37/39-45 |
| Supplemental hazards | Contact with acids liberates very toxic gas. |
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) fluoride used for?
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Thulium(III) fluoride is primarily used for glass doping and to enhance mid-infrared emission in oxyfluoride glass ceramics. It is also utilised in materials science research.
What are the CAS number and formula for Thulium(III) fluoride?
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The CAS number for Thulium(III) fluoride is 13760-79-7, and its chemical formula is TmF3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Thulium(III) fluoride in anhydrous grade with an assay of 99.99%. This product is not represented as USP, BP, or EP grade.
How should Thulium(III) fluoride be handled safely?
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Thulium(III) fluoride is a danger substance. It is toxic if swallowed, in contact with skin, or if inhaled (H301 + H311 + H331). Contact with acids liberates very toxic gas. Appropriate personal protective equipment, including eyeshields, face shields, gloves, and a P2 respirator, should be used. Handle in a well-ventilated area and seek immediate medical attention if exposure occurs.
Is Thulium(III) fluoride a controlled substance?
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The provided data does not indicate that Thulium(III) fluoride is a controlled substance. However, users should always verify compliance with local regulations.
How is Thulium(III) fluoride packed and shipped?
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Thulium(III) fluoride is shipped as UN 3288, Hazard Class 6.1, Packing Group III. Specific packaging details are available upon request, and TSS is experienced in global export.
How can I request a quote or sample for Thulium(III) fluoride?
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To request a quote or a sample of Thulium(III) fluoride, please contact our sales team through the website or via the provided contact information. Our experts will be pleased to assist you.
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