Spacerite® S-11 Alumina Trihydrate (ATH)

1 of 2 products in this brand
Spacerite® S-11 Alumina Trihydrate (ATH) is a fine crystalline, aluminum trihydroxide with uniform particles averaging about one micron in diameter. It is a organic-free pure white powder produced by a proprietary precipitation process that closely controls particle-size distributions. SpaceRite S-3 can also replace other extenders providing enhanced performance and benefits in coatings and adhesives.

Functions: Filler, Flame Retardant

Chemical Family: Aluminum Compounds, Calcium Salts, Silicates, Trihydrates

Labeling Claims: Low VOC

Compatible Polymers & Resins: Alkyds

Features: Abrasion Resistance, Chemical Resistance, Chemically Inert, Color Retention, Corrosion Resistance, Easy Handling, Excellent Dispersibility, Excellent Stability, Flame Retardant, Good Gloss Retention, Higher Filler Content, Improved Substrate Wetting, Low VOC, Moderate Yellowing Tendency, Narrow Particle Size Distribution, Weather Resistance

Knowde Enhanced TDS

Identification & Functionality

CASE Ingredients Functions
CAS No.
21645-51-2
EC No.
244-492-7
Technologies

Features & Benefits

Labeling Claims
Product Highlights
  • Narrow particle size distribution (.25 micron median)
  • Low oil absorption
  • High brightness
  • Clean white color
  • Low specific gravity
  • Non-abrasive
  • Excellent dispersion characteristics
  • Chemically inert
  • UV transparent

Applications & Uses

Compatible Polymers & Resins
Recommended Application
  • Architectural Coatings
  • High solids/low VOC coatings
  • UV coatings
  • Organic colored pigments

Properties

Color
Physical Form
Appearance
White
Chemical Properties
ValueUnitsTest Method / Conditions
Al(OH)₃99.6%Difference
Na₂O (Soluble)0.04%Flame Emissions Photometry
Moisture0.5%Microwave
Physical Properties
ValueUnitsTest Method / Conditions
Brightness (% Z)99.5%Z value of the XYZ Tristimulus divided by
Particle Size d500.31μmHoriba 5100
Density2.42g/cm³
Loose bulk density0.36g/cm³Modified ASTM B212-89
OIl Absorption28.0g/100g
Hardness (Mohs)3
Packed Bulk Density0.49g/cm³Modified ASTM B527-85
Refractive Index1.57
Gallons per pound0.0495
Typical Properties
ValueUnitsTest Method / Conditions
ColorWhite
pH (Not a Buffer)9.8ASTM 1208