Description

Perlite CAS NO 130885-09-5 is a naturally occurring, amorphous aluminosilicate volcanic glass that expands significantly when heated. This unique property makes it an exceptionally valuable industrial mineral for its lightweight, insulating, and filtration capabilities. It is a critical material for the construction, horticulture, and industrial filtration sectors, providing solutions for thermal and acoustic insulation, soil conditioning, and filter aid applications.

Application

• Construction Insulation: As a lightweight aggregate in plasters, concrete, and loose-fill for thermal and acoustic insulation.
• Horticulture and Hydroponics: Used as a soil amendment to improve aeration and drainage, and as a sterile growing medium.
• Industrial Filtration: Acts as a filter aid (pre-coat) in the food & beverage, pharmaceutical, and chemical industries for clarifying liquids.
• Cryogenic Insulation: Employed as an insulating fill for tanks and vessels storing liquefied natural gas (LNG) and other cryogenic fluids.
• Fillers and Extenders: Used in paints, coatings, plastics, and ceiling tiles to reduce weight and modify texture.
• Fireproofing and High-Temperature Applications: Incorporated into fire-rated doors, boards, and refractory shapes due to its non-combustible nature.

Basic Information

Product Name	Perlite
CAS No.	130885-09-5
Molecular Formula	Complex Aluminosilicate (Amorphous)
Molecular Weight	N/A (Variable mineral composition)
Synonyms	Expanded Perlite; Perlite Ore; Volcanic Glass; Horticultural Perlite; Filter Aid Perlite; Insulation Perlite; Amorphous Silica-Alumina; E 561 (food grade)
EINECS	Contact for details

Quality Control

Our perlite is processed and graded to meet stringent industry specifications. Quality is assured through rigorous testing of key physical parameters including bulk density, particle size distribution, pH, and expansion ratio. We adhere to relevant industrial standards and can provide material tailored to specific applications such as ASTM C549 for loose-fill insulation or food-grade filtration standards. Certificates of Analysis (COA) detailing lot-specific characteristics are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Keep containers sealed to prevent moisture absorption, which can affect flow properties. Protect from physical damage and contamination.

Specification

Item	Specification
Appearance	White, lightweight granules/powder
Bulk Density (kg/m³)	30 - 150 (Grade Dependent)
pH (in water)	6.5 - 8.5
Moisture Content	< 1.0 %
Particle Size Distribution	Custom grades available (coarse to fine)
Water Absorption	Contact for details
Loss on Ignition	< 3.0 %

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