Nano Aluminum Hydroxide Filler CAS 21645-51-2 (Nano ATH) is high-white inorganic filler. It features high whiteness, fine particle size and good compatibility with resin. It endows artificial marble and solid surface with flame retardancy, anti-staining performance and excellent surface gloss, widely adopted for solid surface production.

Product Detail

Nano Aluminum Hydroxide Filler CAS 21645-51-2 for Artificial Marble Solid Surface Materials

Product Overview

Nano Aluminum Hydroxide (Nano ATH, CAS 21645-51-2) is a high whiteness functional inorganic filler produced by high purification, ultrafine crushing and precise classification technology. It has excellent compatibility with unsaturated polyester, acrylic and epoxy resin systems used in solid surface. Besides acting as a main reinforcing filler, it brings inherent halogen-free flame retardancy, anti-staining property and weather resistance to artificial marble and solid surface products. Finer particle size helps achieve high surface gloss, uniform texture and stable physical performance of finished solid surface slabs.

Core Features

High Whiteness & Low Impurity: Stable whiteness, less yellowing risk, suitable for light-colored and translucent solid surface formulas.
Excellent Filling Performance: Nano-sized particles improve surface smoothness, gloss and compactness of solid surface materials.
Halogen-free Flame Retardant Function: Endothermic decomposition improves fire resistance of artificial marble slabs.
Outstanding Anti-staining Property: Dense material structure prevents penetration of daily stains.
Good Compatibility with Resin: Easy mixing with acrylic / UP resin, reduces bubble defects during casting and curing.
Improved Weather Resistance: Enhance anti-aging performance for indoor and outdoor solid surface applications.

Product Specifications

Product Name: Nano Aluminum Hydroxide Filler

CAS No: 21645-51-2

Chemical Formula: Al(OH)₃

Appearance: Bright white ultrafine powder

Processing Technology: Purification, nano pulverization, grading separation

Core Function: Reinforcing filler, flame retardant filler, anti-staining functional filler

Applicable Materials: Artificial marble, acrylic solid surface, polyester solid surface slabs

Application Scope

This nano aluminum hydroxide filler is specially formulated for solid surface industry. Widely used in kitchen countertops, bathroom vanity tops, wall panels, window sills, craft ornaments and furniture panels made of artificial marble and acrylic solid surface. It can be matched with different resin systems to produce matte, high-gloss and translucent solid surface products.

Usage Guide

Mix Nano ATH filler evenly with resin, curing agent, pigment and auxiliary agents under controlled stirring speed to avoid air entrapment. Adjust filling loading according to required slab density, gloss and flame retardant standards. Carry out small-scale casting test to optimize viscosity and curing cycle before mass production. Keep packages sealed to prevent moisture absorption.

Packaging & Storage

Packaging: 25kg plastic-lined woven bag, customized packaging available

Storage: Store in cool, dry and ventilated warehouse; keep tightly sealed against moisture

Shelf Life: 12 months under original sealed storage

Our Advantages

Our nano aluminum hydroxide filler has narrow particle size distribution, stable whiteness and consistent quality batch to batch. Multiple particle size grades are available to meet different gloss and texture requirements of solid surface manufacturers. We provide technical support for solid surface formula adjustment. Factory direct supply ensures stable stock and fast delivery. Free samples are available for customer testing.

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