Lithium Tetrabromonickelate(II) SolutionCAS #: 13826-95-4

Synonyms 

Dilithium tetrabromonickelate(II); di-Lithium tetrabromonickelate(II); Dilithium tetrabromonickelate(2-);

Compound Formula: Li2NiBr4 

Molecular Weight: 392.19 

Appearance: Blue liquid 

Melting Point: N/A 

Boiling Point: 67 °C 

Density: 1.065 g/mL 

Solubility in H2O: N/A 

Exact Mass: 391.636607 

Monoisotopic Mass: 387.6407

Product Introduction: Ammonium Tetrafluoroborate (NH₄BF₄, CAS #: 13826-95-4)

Ammonium tetrafluoroborate, with the chemical formula NH₄BF₄ and CAS number 13826-95-4, is a versatile inorganic salt widely used in industrial processes, electrochemical applications, and chemical synthesis. This white crystalline solid combines the ammonium cation (NH₄⁺) with the tetrafluoroborate anion (BF₄⁻), exhibiting properties such as high solubility, thermal stability, and chemical inertness that make it valuable across diverse fields, from metal finishing to laboratory research.

Chemical & Physical Properties

NH₄BF₄ exhibits key properties that underpin its industrial and scientific utility:

Solubility: Highly soluble in water (approximately 25 g/100 mL at 20°C) and polar organic solvents like acetonitrile and methanol, enabling flexible formulation in aqueous and non-aqueous systems.

Ionic Conductivity: Delivers moderate to high ionic conductivity in aqueous solutions (typically 8–12 mS/cm at room temperature), suitable for electrochemical applications requiring efficient ion transport.

Melting Point: Approximately 230°C, with decomposition occurring above 300°C, providing sufficient thermal stability for most industrial processes.

Density: Around 1.88 g/cm³, reflecting its relatively lightweight crystalline structure compared to heavy metal tetrafluoroborates.

Hygroscopicity: Slightly hygroscopic, absorbing moisture from the air under high humidity but remaining stable under normal storage conditions, reducing the risk of clumping.

Key Applications

Ammonium tetrafluoroborate (CAS 13826-95-4) is employed in a range of applications, leveraging its unique characteristics:

Metalworking and Electroplating: Used as an electrolyte additive in electroplating baths for nickel, copper, and gold coatings, improving deposit uniformity and reducing surface defects. It enhances bath conductivity and controls pH, ensuring consistent plating quality.

Flux and Soldering: Acts as a flux in metal joining processes, particularly for aluminum and magnesium alloys, where it removes oxide layers and promotes wetting of molten solder, ensuring strong, corrosion-resistant bonds.

Chemical Synthesis: Serves as a fluorinating agent and catalyst in organic reactions, facilitating the production of fluorinated compounds and ionic liquids. It is also used as a source of BF₄⁻ ions in coordination chemistry.

Laboratory Research: A standard reagent in electrochemical studies, including battery research and capacitor development, where its solubility and conductivity make it a useful electrolyte component. It is also used in analytical chemistry for precipitation reactions.

Fire Retardants: Incorporated into some fire-retardant formulations for textiles and polymers, leveraging its ability to suppress combustion by releasing flame-inhibiting species at high temperatures.

Advantages & Limitations

NH₄BF₄ offers specific benefits alongside considerations for its use:

Cost-Effectiveness: More affordable than metal tetrafluoroborates (e.g., CsBF₄, RbBF₄), making it suitable for large-scale industrial applications.

Solubility: Higher solubility in water and organic solvents compared to many heavy metal tetrafluoroborates, expanding its utility in diverse electrolyte formulations.

Safety Profile: Generally less toxic than heavy metal tetrafluoroborates, reducing handling risks in industrial and laboratory settings.

Limitations: Lower thermal stability than some metal tetrafluoroborates (e.g., KBF₄, CsBF₄), restricting its use in high-temperature processes above 300°C. Decomposition at elevated temperatures releases ammonia and fluoride gases, requiring proper ventilation.

Synthesis & Quality Control

NH₄BF₄ is synthesized through straightforward chemical reactions:

Neutralization: Ammonia (NH₃) or ammonium hydroxide (NH₄OH) reacts with tetrafluoroboric acid (HBF₄) in aqueous solution, forming NH₄BF₄ and water as a byproduct.

Purification: The solution is evaporated, and the resulting solid is recrystallized from water or methanol to remove impurities (e.g., chloride, sulfate), ensuring purity levels of 99% or higher.

Quality control includes titration for assay, ion chromatography to detect anionic impurities, and Karl Fischer titration to measure moisture content (typically below 0.5%). High-purity grades (99.9%) are available for research applications, with additional purification steps to reduce trace metals.

Safety & Handling

Proper handling of NH₄BF₄ is essential to ensure safety and performance:

Storage: Keep in tightly sealed containers in a cool, dry area to minimize moisture absorption. Avoid exposure to high temperatures to prevent decomposition.

Toxicity: May cause skin, eye, and respiratory irritation. Inhalation of dust or ingestion can lead to fluoride poisoning, with symptoms including nausea and respiratory distress. Wear chemical-resistant gloves, goggles, and a respirator in poorly ventilated environments.

Reactivity: Non-flammable but decomposes at high temperatures to release toxic ammonia and hydrogen fluoride (HF) gases. Avoid contact with strong acids, bases, and reducing agents.

Disposal: Dispose of waste in accordance with local regulations for ammonium and fluoride-containing compounds, ensuring proper containment to prevent environmental contamination.

Refer to the product’s Safety Data Sheet (SDS) for detailed safety protocols.

Packaging & Availability

NH₄BF₄ is available in forms tailored to application needs:

Crystalline Powder: Packaged in moisture-resistant bags (1kg–25kg) or drums (50kg–500kg) with desiccants to minimize moisture absorption.

Aqueous Solutions: Pre-dissolved solutions (10–30% w/w) are available for immediate use in electroplating and industrial processes, packaged in 20L–200L containers.

Bulk quantities and high-purity grades (e.g., 99.9% for research) can be requested. Our product meets industrial standards for consistency and performance across applications.

For technical specifications, pricing, or sample requests, contact our sales team, specializing in inorganic salts for industrial and laboratory use.

Health & Safety Information

 Signal Word: Danger 

Hazard Statements: H225-H319-H335-H350 Hazard Codes: F,T 

Risk Codes: 45-11-19-36/37 

Safety Statements: 53-16-26-45 

RTECS Number: N/A 

Transport Information: UN 1993 3/PG 2

 WGK Germany: 3 

GHS Pictogram: Image,Image,Image

Chemical Identifiers 

Linear Formula: Li2NiBr4 

Pubchem CID: 11047451 

MDL Number: MFCD00192058 

EC No.: N/A

IUPAC Name: dilithium; tetrabromonickel(2-) 

Beilstein/Reaxys No.: N/A 

SMILES: [Li+].[Li+].Br[Ni-2](Br)(Br)Br 

InchI Identifier: InChI=1S/4BrH.2Li.Ni/h4*1H;;;/q;;;;2*+1;+2/p-4 

InchI Key: AVJDNPHXGKKFIA-UHFFFAOYSA-J

Packing of Standard Packing: 

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. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 735 gallon liquid totes Special package is available on request.