Black Mica (Biotite) CAS NO 110780-72-8

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CAS No.:110780-72-8

Grade:Pharmacy Grade

Content:99.9%

Brand:Customizable

Packaging:Customizable

Description

Black Mica (Biotite) CAS NO 110780-72-8 is a naturally occurring phyllosilicate mineral belonging to the mica group, characterized by its dark color, perfect basal cleavage, and sheet-like structure. This material is valued for its unique combination of thermal stability, electrical insulation, and chemical inertness, making it a versatile functional filler and additive. It is essential for manufacturers in the coatings, plastics, construction, and cosmetics industries seeking to enhance product performance with a natural, plate-like mineral.

Application

As a functional filler and reinforcement agent in polymer composites and engineering plastics to improve dimensional stability and reduce gas permeability.
As a pearlescent pigment and filler in cosmetic formulations, including eyeshadows, foundations, and nail polishes, to provide shimmer and improve texture.
As a mineral additive in construction materials, such as joint compounds, sealants, and roofing coatings, to enhance durability, fire resistance, and weatherability.
In the production of welding rod coatings and foundry mold washes to act as a flux and insulator.
As a soil amendment and conditioner in agriculture and horticulture to improve potassium and magnesium content.
In drilling mud formulations for the oil and gas industry to help control viscosity and fluid loss.
As a substrate material in scientific research and geology for educational and experimental purposes.

Basic Information


Product Name	Black Mica (Biotite)
CAS No.	110780-72-8
Molecular Formula	K(Mg,Fe)3(AlSi3O10)(F,OH)2
Molecular Weight	~433 g/mol (Variable)
Synonyms	Biotite; Iron Mica; Black Mica; Magnesium Iron Mica; Dark Mica; Mica Group Mineral; Potassium Magnesium Iron Aluminum Silicate Hydroxide Fluoride; Isoinglass
EINECS	Contact for details

Quality Control

Our Black Mica (Biotite) is processed and graded to meet stringent quality parameters for industrial applications. We employ rigorous quality testing protocols, including particle size analysis (PSA), chemical composition verification via X-ray fluorescence (XRF), and loss on ignition (LOI) tests. Certificates of Analysis (COA) detailing lot-specific specifications are available upon request to ensure traceability and compliance with your formulation requirements.

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). Keep away from strong acids and moisture to prevent degradation of the mineral structure. Ensure the storage area is clean to avoid contamination.

Specification

Item	Specification
Appearance	Dark brown to black flake or powder
Identification (XRD)	Complies (Biotite pattern)
Particle Size (D50)	10 - 250 µm (Various grades available)
Moisture Content	≤ 2.0 %
Loss on Ignition (LOI)	≤ 5.0 %
pH (10% Slurry)	6.0 - 8.5
Heavy Metals (as Pb)	≤ 20 ppm