Black Mica (Biotite) CAS NO 112593-95-0

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CAS No.:112593-95-0

Grade:Pharmacy Grade

Content:99.9%

Brand:Customizable

Packaging:Customizable

Description

Black Mica (Biotite) is a naturally occurring phyllosilicate mineral belonging to the mica group, recognized under the CAS registry number 112593-95-0. It is valued for its unique combination of thermal stability, electrical insulation properties, and layered structure, which allows for exfoliation into thin, flexible sheets. This versatile mineral is essential for manufacturers in the plastics, coatings, construction, and cosmetics industries seeking to enhance product performance with a natural, plate-like filler.

Application

As a functional filler and reinforcement agent in polymer composites (e.g., polypropylene, nylon) to improve dimensional stability, heat resistance, and mechanical strength.
As a pearlescent pigment and natural colorant in cosmetic formulations, including eyeshadows, nail polishes, and lipsticks.
In construction materials, such as joint compounds, sealants, and textured paints, to improve workability, crack resistance, and durability.
As a dielectric insulator and thermal barrier material in electronic components and coatings.
In drilling fluids for the oil & gas industry as a viscosity modifier and fluid loss control additive.
As a soil amendment in agriculture to supplement potassium and improve soil structure.
In automotive underbody coatings and fire-retardant materials for its thermal and chemical resistance.

Basic Information


Product Name	Black Mica (Biotite)
CAS No.	112593-95-0
Molecular Formula	K(Mg,Fe)3(AlSi3O10)(F,OH)2
Molecular Weight	Varies (Complex silicate structure)
Synonyms	Biotite Mica; Iron Mica; Black Iron Mica; Magnesium Iron Mica; Dark Mica; Mica Group Mineral; Phyllosilicate Mineral; Potassium Magnesium Iron Aluminum Silicate Hydroxide Fluoride
EINECS	Contact for details

Quality Control

Our Black Mica (Biotite) is sourced and processed under strict quality protocols to ensure batch-to-batch consistency. Quality is verified through parameters including particle size distribution (PSD), chemical composition, color consistency, and moisture content. Certificates of Analysis (COA) documenting these specifications are available for every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container sealed when not in use to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Dark brown to black flaky powder
Identification (XRD)	Complies (Characteristic Biotite pattern)
Particle Size (D50)	10 - 250 µm (Various grades available)
Moisture Content	< 2.0 %
Loss on Ignition (LOI)	2 - 5 %
pH (in water)	6.0 - 8.5
Bulk Density	0.3 - 0.7 g/cm³