CAS #:

Linear Formula:

Cr2O3 • xH2O

MDL Number:


EC No.:



(2N) 99% Chromium(III) Oxide Hydrate
Pricing > SDS > Data Sheet >
(3N) 99.9% Chromium(III) Oxide Hydrate
Pricing > SDS > Data Sheet >
(4N) 99.99% Chromium(III) Oxide Hydrate
Pricing > SDS > Data Sheet >
(5N) 99.999% Chromium(III) Oxide Hydrate
Pricing > SDS > Data Sheet >

Chromium(III) Oxide Hydrate Properties (Theoretical)

Compound Formula Cr2H2O4
Molecular Weight 170.01
Appearance Green powder
Melting Point 2435 °C (4415 °F)
Boiling Point 4000 °C (7232 °F)
Density 5.22 g/cm3
Solubility in H2O N/A
Exact Mass 169.876319 g/mol
Monoisotopic Mass 169.876319 g/mol

Chromium(III) Oxide Hydrate Health & Safety Information

Signal Word Warning
Hazard Statements H302-H332-H317
Hazard Codes Xi
Precautionary Statements P261-P280-P304+P340-P301+P312-P363-P501
RTECS Number N/A
Transport Information NONH for all modes of transport
GHS Pictograms

About Chromium(III) Oxide Hydrate

Oxide IonChromium(III) Oxide Hydrate is a highly insoluble thermally stable chromium source suitable for glass, optic and ceramic applications. Chromium oxide is a green, hygroscopic solid found in nature as the rare mineral eskolaite. Oxide compounds are not conductive to electricity. However, certain perovskite structured oxides are electronically conductive finding application in the cathode of solid oxide fuel cells and oxygen generation systems. They are compounds containing at least one oxygen anion and one metallic cation. They are typically insoluble in aqueous solutions (water) and extremely stable making them useful in ceramic structures as simple as producing clay bowls to advanced electronics and in light weight structural components in aerospace and electrochemical applicatioHigh Purity (99.999%) Chromium Oxide (Cr2O3) Powderns such as fuel cells in which they exhibit ionic conductivity. Metal oxide compounds are basic anhydrides and can therefore react with acids and with strong reducing agents in redox reactions. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) information is available.

Chromium(III) Oxide Hydrate Synonyms

Oxo-(oxochromiooxy)chromium hydrate, Dichromium trioxide hydrate, Green chromium oxide, Chromium sesquioxide hydrate, Trioxochromium hydrate, Hydrated chromium(III) trioxide, Chromic oxide hydrate, Chromium(3+) trioxide hydrate

Chemical Identifiers

Linear Formula Cr2O3 • xH2O
MDL Number MFCD00149662
EC No. 215-160-9
Beilstein/Reaxys No. N/A
Pubchem CID 91886630
IUPAC Name oxo-(oxochromiooxy)chromium; hydrate
InchI Identifier InChI=1S/2Cr.H2O.3O/h;;1H2;;;

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements


See more Chromium products. Chromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of 51.9961. Chromium Bohr ModelThe number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d5 4s1. Louis Nicolas Vauquelin first discovered chromium in 1797 and first isolated it the following year. The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous steel-gray appearance. Elemental ChromiumChromium is the hardest metallic element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it transforms into a paramagnetic solid. The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word 'chroma.' meaning color.


August 11, 2022
Los Angeles, CA
Each business day American Elements' scientists & engineers post their choice for the most exciting materials science news of the day
Ultrasensitive optical sensing instrument has broad medical, science uses

Ultrasensitive optical sensing instrument has broad medical, science uses