Praseodymium(III) nitrate hexahydrate
[CAS# 15878-77-0]

Identification

• Classification: Inorganic chemical industry >> Inorganic salt >> Metal nitrates and nitrites
• Name: Praseodymium(III) nitrate hexahydrate
• Molecular Formula: Pr(NO₃)₃.6(H₂O)
• Molecular Weight: 435.01
• CAS Registry Number: 15878-77-0
• EC Number: 677-723-9
• SMILES: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Pr+3]

Safety Data

• Hazard Symbols: GHS03;GHS07 Danger
• Risk Statements: H272-H315-H319-H335
• Safety Statements: P210-P220-P261-P264-P264+P265-P271-P280-P302+P352-P304+P340-P305+P351+P338-P319-P321-P332+P317-P337+P317-P362+P364-P370+P378-P403+P233-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Eye irritation	Eye Irrit.	2	H319
Oxidising solids	Ox. Sol.	3	H272
Skin irritation	Skin Irrit.	2	H315
Specific target organ toxicity - single exposure	STOT SE	3	H335

Discovery and Applications

Praseodymium is a lanthanide element that was discovered in 1885 by Carl Auer von Welsbach by separating praseodymium into its constituent elements, praseodymium and neodymium. Praseodymium(III) nitrate hexahydrate is usually synthesized by dissolving praseodymium oxide (Pr2O3) in nitric acid (HNO3) and allowing the solution to crystallize to form the hexahydrate salt. Praseodymium nitrate is a green crystalline solid that is highly soluble in water and exhibits moderate solubility in ethanol. It decomposes on heating due to the loss of water molecules and has no distinct melting point. The compound acts as a strong oxidant and is used in a variety of chemical processes.

Praseodymium(III) nitrate hexahydrate is used as a catalyst in organic reactions, including oxidation and coupling reactions. Its ability to transfer oxygen atoms makes it valuable in the formation of complex organic molecules. It can be used in the polymerization of olefins to produce specialty polymers with unique properties.

The compound is used to produce yellow-green colors in glass and ceramic materials. The praseodymium ion imparts a bright hue, making it a popular choice for decorative glass and enamel coatings. Praseodymium-doped glasses and ceramics are used in optical applications, including lasers and amplifiers, due to their unique light absorption and emission properties.

Praseodymium (III) nitrate hexahydrate is used to develop magneto-optical materials. These materials change their optical properties in response to a magnetic field and are an integral part of a wide range of electronic and photonic devices. The compound is used to make phosphors for lighting and display technology. Praseodymium-doped phosphors improve the color quality and efficiency of light-emitting devices.

Due to its oxidizing properties, praseodymium (III) nitrate hexahydrate can be used in water treatment processes to remove pollutants and improve water quality.

It is used in analytical techniques to detect and quantify trace elements in a variety of samples, improving the sensitivity and accuracy of analytical methods.

Praseodymium (III) nitrate hexahydrate is being studied for its potential in creating new materials with advanced functionalities. Research focuses on its use in the development of new alloys, ceramics, and composites for high-tech applications. The compound is a hot topic for the development of new synthetic routes and chemical processes, helping to advance industrial and medicinal chemistry.

References

2019. Preparation of Ultrafine Spherical Pr-ZrSiO4 Pigment by Sol-Gel-Microemulsion Method. Silicon, 11(2), 1073-1081.
DOI: 10.1007/s12633-019-00123-7

2021. Ru Nanoparticles on Pr2O3 as an Efficient Catalyst for Hydrogen Production from Ammonia Decomposition. Catalysis Letters, 151(12), 3607-3615.
DOI: 10.1007/s10562-021-03709-2

2024. Highly Active Co is Injected into the PrSmMnO3 Parent Structure to Promote the 1O2 Pathway to Efficiently Degrade Residual Chloroquine Phosphate in Wastewater. Catalysis Letters, 154(11), 5890-5906.
DOI: 10.1007/s10562-024-04844-2