Indium(III) hydroxide

氢氧化铟

Also known as: Indium trihydroxide, Indium hydroxide, Indium hydroxide (In(OH)3), NSC 127173, MFCD00011056, EINECS 243-947-7

Indium(III) hydroxide (CAS 20661-21-6) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H3InO3 and a molecular weight of 165.84000 g/mol. It is also known as Indium trihydroxide, Indium hydroxide and Indium hydroxide (In(OH)3). Key properties include a melting point of 150 °C(lit.), a boiling point of 100ºC at 760 mmHg and a density of 4.45 g/mL at 20 °C(lit.). GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20661-21-6
Jingsj CID
J-48722-3
Molecular Formula
H3InO3
Chinese Name
氢氧化铟
Molecular Weight
165.84000 g/mol
Category
Inorganic Chemicals
Last updated
8/21/2026

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Physicochemical Properties

Melting Point150 °C(lit.)
Boiling Point100ºC at 760 mmHg
Density4.45 g/mL at 20 °C(lit.)

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of Indium(III) hydroxide?

The CAS number of Indium(III) hydroxide is 20661-21-6.

What are the molecular formula and molecular weight of Indium(III) hydroxide?

Indium(III) hydroxide has molecular formula H3InO3 and molecular weight 165.84000 g/mol.

Is Indium(III) hydroxide hazardous?

Indium(III) hydroxide has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Indium(III) hydroxide (CAS 20661-21-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-48722-3 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.