Indium(III) oxide
Indium(III) oxide (CAS: 1312-43-2, Formula: In2O3, Molar Mass: 277.63 g/mol) is a high-purity inorganic compound supplied by Tech Serve Solutions. Available as a powder, this indium oxide serves as a critical dopant and precursor in advanced materials science, particularly for electronic applications and catalysis. Its reliable properties make it suitable for research and industrial synthesis.
- IUPAC
- Diindium trioxide,Indium sesquioxide
- Synonyms
- Diindium trioxideIndium sesquioxide

Transparent Conductive Films
Indium(III) oxide is a key component in the fabrication of transparent conductive films, such as Indium Tin Oxide (ITO), which are essential for touch screens, LCDs, and solar cells. Its high electrical conductivity and optical transparency are crucial for these devices.
Catalysis
It finds application as a catalyst or catalyst support in various chemical reactions. Its unique electronic and surface properties can enhance reaction rates and selectivity in specific industrial processes.
Dopant for Semiconductors
As a dopant, Indium(III) oxide is used to modify the electrical properties of other semiconductor materials. This controlled introduction of indium can optimise material performance for electronic components.
Phosphor Materials
This oxide can be used in the development of phosphor materials for lighting and display technologies. Its properties contribute to the luminescence characteristics of these advanced materials.
| Molecular weight | 277.63 |
|---|---|
| Empirical formula | In2O3 |
| Assay | 99.99% trace metals basis |
| Form | powder |
| Density | 7.18 g/mL at 25 °C(lit.) |
| Vapour pressure | <0.01 mmHg (25 °C) |

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) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Indium(III) oxide used for?
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Indium(III) oxide is primarily used in the manufacturing of transparent conductive films for electronics, as a dopant for semiconductors, in catalysis, and as a component in phosphor materials.
What is the CAS number and formula for Indium(III) oxide?
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The CAS number for Indium(III) oxide is 1312-43-2, and its chemical formula is In2O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Indium(III) oxide with an assay of 99.99% trace metals basis. TSS does not represent this product as USP, BP, or EP grade.
How should Indium(III) oxide be handled safely?
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Handle Indium(III) oxide with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves, in a well-ventilated area. It is classified as causing skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335).
Is Indium(III) oxide a controlled substance?
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Based on the provided data, Indium(III) oxide is not indicated as a controlled substance.
How is Indium(III) oxide packed and exported?
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Indium(III) oxide is available as a powder and is carefully packed for export by Tech Serve Solutions, adhering to international shipping regulations for chemical compounds.
How can I request a quote or sample for Indium(III) oxide?
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To request a quote or a sample of Indium(III) oxide, please contact Tech Serve Solutions directly through our website or by phone, providing your specific requirements.
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