Description

Tourmaline is a complex crystalline borosilicate mineral renowned for its unique and stable piezoelectric and pyroelectric properties. This makes it a critical functional material in advanced industrial applications where the generation of an electrical charge under mechanical stress or temperature change is required. Key industries that utilize this material include electronics, environmental technology, and personal care product manufacturing.

Application

• Negative Ion Generation: Used in air and water purification systems, health products, and textiles to generate negative ions, which are believed to improve air quality and well-being.
• Piezoelectric Components: Serves as a durable, natural piezoelectric material in pressure sensors, acoustic devices, and other electronic components.
• Infrared Emission: Incorporated into fabrics, ceramics, and coatings for its far-infrared radiation properties, used in therapeutic and heating applications.
• Cosmetics and Personal Care: Finely ground tourmaline powder is added to skincare products for its purported ability to improve skin texture and vitality.
• Water Treatment: Utilized in filter media to alter the pH and structure of water clusters, often marketed for producing "activated" or "energized" water.
• Industrial Fillers: Acts as a functional filler in plastics and composites to provide static dissipation, thermal stability, and reinforcement.

Basic Information

Product Name	Tourmaline
CAS No.	1317-93-7
Molecular Formula	Complex Borosilicate (e.g., (Na,Ca)(Mg,Li,Al,Fe2+,Fe3+,Mn)3Al6(BO3)3Si6O18(OH,F)4)
Molecular Weight	Variable (Mineral)
Synonyms	Schorl; Elbaite; Dravite; Uvite; Rubellite; Indicolite; Achroite; Tsilaisite; Fluor-buergerite; Buergerite
EINECS	215-250-8

Quality Control

Our tourmaline products are sourced and processed under strict quality protocols to ensure batch-to-batch consistency in particle size distribution, chemical composition, and functional performance. While specifications vary by grade and application, we provide comprehensive Certificates of Analysis (COA) detailing key parameters such as mineralogical purity, piezoelectric constant, and infrared emissivity. We adhere to relevant industrial material standards and can support customer-specific qualification requirements.

Storage

Preserve in a tightly closed container, protected from light and moisture. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from strong acids and strong oxidizing agents. For micronized or powder grades, ensure containers are sealed to prevent caking due to humidity.

Specification

Item	Specification
Appearance	Fine Powder / Granules (Color varies: Black, Green, Pink, etc.)
Particle Size (D50)	Customizable (e.g., 5 µm, 10 µm, 45 µm, 100 mesh)
Mineralogical Purity (Tourmaline Content)	> 95%
Negative Ion Release	> 500 ions/cm³ (Test method dependent)
Far Infrared Emissivity	> 0.90 (in specific wavelength range)
Moisture Content	< 2.0%
Heavy Metals (as Pb)	< 10 ppm

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