For procurement managers and R&D scientists in the chemical and battery industries, a thorough understanding of product specifications is non-negotiable. Lithium Hydroxide Monohydrate (LiOH·H2O), CAS 1310-66-3, is no exception. As a leading manufacturer and supplier of this critical compound, we aim to demystify its specifications, ensuring our clients can make informed purchasing decisions and secure the highest quality material for their applications. When you buy Lithium Hydroxide Monohydrate, these details are crucial.

The Importance of Purity Levels

Lithium Hydroxide Monohydrate is commercially available in various grades, with battery-grade and industrial-grade being the most common. The primary differentiator is purity. Battery-grade LiOH·H2O demands exceptionally high purity, often specified as a minimum LiOH content of 56.5% to 57.5%, but with manufacturers like us also offering up to 99.5% purity. This high purity is essential for the synthesis of advanced cathode materials (NCM, NCA) used in lithium-ion batteries, where even trace impurities can significantly degrade performance and lifespan.

Key Impurities to Monitor

Beyond the main LiOH content, several potential impurities must be carefully controlled, especially for battery applications. These include:

• Carbonate (CO3²⁻): Affects the solution's alkalinity and can react with lithium. For battery grade, limits are typically below 0.5% or even 0.35%.
• Sodium (Na+) and Potassium (K+): Alkali metals that can interfere with electrochemical processes and reduce battery performance. Low ppm levels (e.g., ≤0.05% for Na+, ≤0.01% for K+) are critical.
• Calcium (Ca²⁺) and Iron (Fe): Divalent and transition metal ions that can catalyze unwanted side reactions or deposit on electrodes. Strict limits, often in the ppm range (e.g., Fe ≤0.005%), are imposed.
• Sulfates (SO4²⁻) and Chlorides (Cl⁻): Anionic impurities that can impact electrolyte stability and cell performance. Limits are usually in the hundredths of a percent.
• Acid-insoluble matter and Water-insoluble matter: These indicate the presence of particulate contaminants, which can cause short circuits or processing issues. Very low percentages (e.g., ≤0.005%) are desired.

Industrial Grade vs. Battery Grade

While industrial-grade Lithium Hydroxide Monohydrate also meets important specifications, the impurity tolerances are generally broader. Industrial applications might include its use as a flux in aluminum production or in air purification systems, where trace amounts of certain impurities are less detrimental than in high-performance batteries. However, for advanced chemical synthesis and specialized uses, even industrial grades require careful specification review.

How to Source Effectively

As a leading supplier in China, we provide detailed Certificates of Analysis (CoA) with each shipment, outlining all key specifications. We encourage potential buyers to request these documents and compare them against their specific requirements. Engaging with our sales team allows you to discuss your application needs and ensure you receive the most suitable grade of Lithium Hydroxide Monohydrate at a competitive price. Secure your supply chain with a trusted manufacturer that prioritizes quality and transparency.