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Indium Chloride[2]

Updated: 2026-09-15

Overview

Indium Chloride (InCl3) is an inorganic compound composed of indium and chlorine. It is commonly found as a white to pale yellow crystalline solid and is highly hygroscopic, meaning it readily absorbs moisture from the air. This compound is primarily used in the semiconductor industry and as a catalyst in organic synthesis. Indium Chloride is known for its reactivity, particularly with water, where it releases hydrogen chloride gas. Due to its corrosive nature, it must be handled with care, using appropriate personal protective equipment (PPE) and storage conditions.

Physical and Chemical Properties

Indium Chloride has a molecular weight of 221.18 g/mol and a density of 3.46 g/cm³. It melts at 586 °C and is soluble in water, ethanol, and ether. The compound is highly hygroscopic, which means it must be stored in airtight containers to prevent degradation. Chemically, InCl3 is a Lewis acid and is often used in reactions that require a strong electron acceptor. It reacts vigorously with water to form hydrochloric acid and indium hydroxide, making it essential to avoid exposure to moisture during handling and storage.

Main Applications

Indium Chloride is widely utilized in the semiconductor industry for the production of indium-based compounds and thin films. It serves as a precursor in the synthesis of indium phosphide (InP) and indium antimonide (InSb), which are critical materials in optoelectronic devices. In organic chemistry, InCl3 acts as a catalyst in Friedel-Crafts reactions and other transformations. Its Lewis acid properties make it valuable for facilitating complex chemical reactions, including the formation of carbon-carbon bonds.

Safety and Storage

Due to its corrosive and hygroscopic nature, Indium Chloride requires strict safety measures. It can cause severe burns to skin and eyes, and inhalation of its dust or fumes may lead to respiratory irritation. Always use gloves, goggles, and a fume hood when handling this compound. Storage should be in a cool, dry environment, preferably in airtight containers made of glass or plastic. Avoid contact with water and incompatible substances such as strong bases and oxidizing agents.

B2B Procurement Guide

When procuring Indium Chloride, B2B buyers should prioritize suppliers who provide detailed purity specifications, typically 99.9% or higher for semiconductor applications. Request safety data sheets (SDS) to ensure compliance with handling and storage guidelines. Pricing varies based on purity and order volume, with common ranges between $100-$300 per kg. Consider bulk purchasing for cost savings, but ensure proper storage facilities are available to maintain product integrity.

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