indium Compounds
Indium Sulfate
Indium sulfate (IndiSul®) plays a vital role in the electroplating sector because of its exceptional solubility and stability across different conditions. IndiSul® also serves as both a synthesis chemical and a hardening agent within gold electroplating baths. Backed by decades of experience, Indium Corporation offers high-quality, high-precision products, including indium sulfate, to support every customer’s needs.
Powered by Indium Corporation
- Available in Three Forms
- High Precision, Quality, and Capacity for Large Volumes
- Exceptional Technical Support
Product Overview
IndiSul®is a high-purity, grayish-white powder with a monoclinic prism structure that provides excellent solubility and stability in various conditions. It is available both as an anhydrous powder and a hydrated salt with 9 moles of water to address different industrial needs. IndiSul® can also be supplied as a solution with concentrations tailored to your specific requirements.
Properties
- Chemical Formula: In₂(SO₄)₃ (anhydrous), In₂(SO₄)₃ • 9H₂O (hydrated)
- Molecular Weight: 517.81 (anhydrous), 679.95 (hydrated)
- Appearance: Grayish-white, hygroscopic powder with monoclinic prisms
- Purity Grades: 4N (99.99%), 5N (99.999%)
- Solubility: 53.92 g/100g solution at 20°C
- Specific Gravity: 3.438 g/cc
Features
Breakthrough Process
Philco, an electronics manufacturer, utilized indium sulfate in a process that etched and electroplated metallic indium onto thin N-type germanium strips. This technique was instrumental in creating the emitter and collector electrodes of the world’s first high-frequency junction transistor, which achieved frequencies up to 60 MHz.
437 oC
Indium sulfate decomposes into indium oxide when heated to 437 oC, releasing sulfur trioxide vapor.
13464-82-9
This is the CAS registry number for indium sulfate.
1.85
A 0.14 mol/liter of indium sulfate water solution has a pH of 1.85, making it quite acidic by nature.
Products
Indium Corporation offers three forms of indium sulfate: solid anhydrous, solid hydrated, and solution.
| Form | Description | Chemical Formula | Applications |
|---|---|---|---|
| Indium Sulfate Anhydrous | High-purity, concentrated indium source; ideal for moisture-sensitive chemical synthesis | In₂(SO₄)₃ (anhydrous) | Chemical synthesis requiring minimal moisture |
| CAS Registry Number | Contains 9 moles of water; suitable for processes requiring controlled hydrolysis or gradual moisture release | In₂(SO₄)₃•9H₂O (hydrated) | Controlled hydrolysis reactions, moisture-sensitive processes |
| Purity | Aqueous solution for immediate use; ideal for applications that require pre-dissolved indium sulfate | In₂(SO₄)₃ in solution | Gold electroplating baths, ready-to-use indium sulfate source |
Product Data Sheets
IndiSul™ (Indium Sulfate) PDS 97551 (A4) R8.pdf
IndiSul™ (Indium Sulfate) PDS 97551 R8.pdf
Related Applications
Indium sulfate is available for use in a variety of applications.
Catalysis
Indium and gallium compounds for catalysis, chemical synthesis, and
Chemical Synthesis
Indium and gallium compounds for chemical synthesis and materials
Related Markets
Indium Corporation’s indium sulfate is suitable for the following markets:
Related Products
Indium
We offer various forms and purities of indium
Indium Compounds
High-purity indium compounds for diverse industry
Indium Tin Oxide (ITO)
Top-notch, high-purity ITO products in large
Indium Sulfide
A pivotal material for advancing sustainable energy
Expert Support for Reliable Results
Do you have technical questions or sales inquiries? Our dedicated team is here to help. “From One Engineer to Another®” isn’t just our motto—it’s our commitment to delivering exceptional service. We’re ready when you are. Let’s connect!
Interconnect Reliability: From the Chip to the System
Interconnect reliability is critical to the reliability of semiconductor packaging and electronic systems. If we look at the life cycle from the chip to the system—from IC design, wafer fab,
Minimizing Graping
Folks, This post is an excerpt on graping, fromIndium Corporation'sThe Printed Circuits Assemblers Guide to Solder Defects. Introduction The growth of personal electronic devices continues to
Indium Mailbag – Indium Alloys
Today’s mailbag question is about indium-containing alloys. The email asks, “Please elaborate/enumerate which solders you sell that are actually made from the metal indium? All I ever see
Indium Plating
Indium Corporation supplies both Indium Plating Anodes and an Indium Sulfamate Plating Bath Solution. These can be used with off-the-shelf plating equipment, or used in a home-made setup. (Eric
Industry’s FIRST B2B Online Video Ads
I am proud to say that INDIUM's Marcom team has achieved another first. This week we unleashed the electronics assembly materials industry's FIRST video ads. Online. B2B. Video is nothing new
Looking for Safety Data Sheets?
Access everything you need — from technical specifications to application guidance — in one convenient location.
Your Success
is Our Goal
Optimize your processes with the latest materials, technology, and expert application support. It all starts by connecting with our team.