Description

Eucryptite (Alli(Sio4)) is a lithium aluminum silicate mineral with the chemical formula LiAlSiO₄. This specialized inorganic compound is valued for its unique negative thermal expansion properties, making it a critical material for advanced ceramic and glass-ceramic formulations. It is primarily sought by manufacturers in the electronics, aerospace, and high-performance materials sectors for applications requiring exceptional dimensional stability under thermal stress.

Application

• Thermal Expansion Compensation: Key component in glass-ceramics and composite materials to achieve zero or controlled thermal expansion for precision optics, telescope mirrors, and cooktop panels.
• Advanced Ceramics: Used in the formulation of high-strength, thermally stable structural ceramics for engineering and aerospace components.
• Solid-State Electrolytes: Investigated as a ceramic matrix or component in solid electrolytes for next-generation lithium-ion batteries due to its lithium content and structural stability.
• Refractory and Insulation Materials: Imparts improved thermal shock resistance and stability in specialized refractory linings and insulating materials.
• Catalyst Supports: Serves as a stable, inert support material for certain high-temperature catalytic processes in the chemical industry.
• Geological & Research Standard: Used as a reference material in geological studies and materials science research.

Basic Information

Product Name	Eucryptite (Alli(Sio4))
CAS No.	1302-65-4
Molecular Formula	LiAlSiO₄
Molecular Weight	126.01 g/mol
Synonyms	Lithium Aluminum Silicate; Lithium Aluminosilicate; Eucryptite; LiAlSiO4; Lithium Aluminum Oxide Silicate; Alli(Sio4); α-Eucryptite; β-Eucryptite
EINECS	215-107-7

Quality Control

Our Eucryptite is produced and tested under stringent quality management systems to ensure batch-to-batch consistency and performance reliability. Quality parameters including phase purity (alpha/beta), particle size distribution, and chemical composition are rigorously controlled. A comprehensive Certificate of Analysis (COA) detailing all specifications and test results is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture, which can affect flow properties and performance.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (XRD)	Complies (α-phase or β-phase as specified)
Assay (LiAlSiO₄)	≥ 98.0 %
Lithium (Li) Content	5.2 - 5.6 %
Aluminum (Al) Content	20.8 - 21.5 %
Silicon (Si) Content	21.8 - 22.3 %
Particle Size (D50)	1-10 μm (or as specified)
Loss on Drying (LOD)	≤ 1.0 %
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.