Indium

Q: What is Indium (CAS 7440-74-6) used for?

Indium (CAS 7440-74-6) is primarily used in the electronics industry for touch screens and displays (as ITO), solders, and in semiconductor manufacturing. It is also used in thermoelectric materials and specialised alloys.

Q: What is the CAS number and formula for Indium?

The CAS number for Indium is 7440-74-6, and its chemical formula is In.

Q: What grade and purity does Tech Serve Solutions supply for Indium?

Tech Serve Solutions supplies Indium with an assay of 99.999% trace metals basis. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.

Q: How should Indium be handled safely?

Indium is a flammable solid (H228) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator. Ensure good ventilation and avoid ignition sources.

Q: How is Indium packed, shipped, and exported by TSS?

Indium is shipped as a flammable solid, UN 3089, Class 4.1, Packing Group II. TSS exports globally, adhering to all relevant shipping and customs regulations.

Q: How can I request a sample or quote for Indium?

To request a sample or quote for Indium, please contact our sales team via the website or provide your requirements through the product enquiry form.

CAS 7440-74-6InMetal & Ceramic Science

Indium (CAS 7440-74-6, Formula In, Molar Mass 114.82) is a soft, silvery-white metal known for its low melting point and excellent conductivity. It is extensively utilised in the electronics industry for solder and in touch screen displays as indium tin oxide (ITO). Its semiconductor properties also make it valuable in advanced materials research and thermoelectric applications.

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Indium (In) — chemical element, CAS 7440-74-6; Materials Science, fine chemical supplied by Tech Serve Solutions

Alternative EnergyIndiumMaterials ScienceMetal and Ceramic ScienceMetalsThermoelectric Materials

01 /Applications

Electronics and Displays

Indium is crucial for producing indium tin oxide (ITO), a transparent conductive film used in LCDs, OLEDs, and touch screens. It is also a key component in solders for electronic components.

Semiconductor Manufacturing

Utilised in the production of various semiconductor devices, including photodiodes and transistors. Its unique electronic properties are vital for specialised electronic applications.

Thermoelectric Materials

Indium compounds serve as precursors in the development of thermoelectric materials, which can convert heat energy into electrical energy and vice versa.

Alloys and Solders

Indium's low melting point makes it useful in low-temperature solders and specialised alloys, including those used in bearings and thermal management.

02 /Properties

Molecular weight	114.82
Empirical formula	In
Assay	99.999% trace metals basis
Form	powder
Density	7.3 g/mL at 25 °C(lit.)
Vapour pressure	<0.01 mmHg (25 °C)
Melting point	156.6 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Danger

Hazard statements

H228Flammable solid
H315Causes skin irritation
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES

Protective equipment	Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges
Transport (UN / ADR)	UN 3089 4.1 / PGII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	F,Xn
Risk statements (R)	11-20-36/37/38
Safety statements (S)	9-16-36/37/39

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

7440-74-6

MDL number

MFCD00134048

05 /Additional specifications

Resistivity	8.37 μΩ-cm
Thickness	0.25 mm

06 /Quality & supply

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.

07 /Frequently asked questions

What is Indium (CAS 7440-74-6) used for?

Indium (CAS 7440-74-6) is primarily used in the electronics industry for touch screens and displays (as ITO), solders, and in semiconductor manufacturing. It is also used in thermoelectric materials and specialised alloys.

What is the CAS number and formula for Indium?

The CAS number for Indium is 7440-74-6, and its chemical formula is In.

What grade and purity does Tech Serve Solutions supply for Indium?

Tech Serve Solutions supplies Indium with an assay of 99.999% trace metals basis. We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade.

How should Indium be handled safely?

Indium is a flammable solid (H228) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment including eyeshields, gloves, and a suitable respirator. Ensure good ventilation and avoid ignition sources.

How is Indium packed, shipped, and exported by TSS?

Indium is shipped as a flammable solid, UN 3089, Class 4.1, Packing Group II. TSS exports globally, adhering to all relevant shipping and customs regulations.