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Master Bond adhesives

Huber SpaceRite® S3 Aluminum Hydroxide
Categories: Ceramic; Oxide; Aluminum Oxide; Other Engineering Material; Additive/Filler for Polymer

Material Notes: SpaceRite® S-3 is a special purpose white hydrated alumina. White hydrated alumina is aluminum trihydroxide, Al(OH)3, that is produced through special processing of aluminous feedstock and stringent process control systems. The result is hydrated alumina unequaled in purity and whiteness. Although hydrated alumina is a dry powder, when heated above approximately 220ºC it decomposes in approximately 35% water and 65% alumina by weight. Hydrates are nonabrasive, low-density materials that have been used extensively in the coatings industry and other applications where color and the absence of impurities are critical. The regulatory section of the MSDS states that SpaceRite® S-3 hydrated alumina “may be used in accordance with the following 21 CFR Sections: 175.300, 176.170, 176.210, 177.1200, 177.2600, 178.3297, 182.90, 73.1010.” SpaceRite S-3 is a fine crystalline, aluminum trihydroxide with uniform particles averaging about one micron in diameter. It is an 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.

Product Features:

  • Narrow particle size distribution (1.0 micron median)
  • Low oil absorption
  • High brightness
  • Clean white color
  • Low specific gravity
  • Non-abrasive
  • Excellent dispersion characteristics
  • Chemically inert
  • UV transparent
Applications:
    Architectural Coatings: TiO2 replacement; Will not reduce gloss; Excellent gloss retention; Will not impact color; Easily dispersed (7+ Hegman); Weather resistant; Inert
  • High solids/low VOC coatings: Highly inert; Low oil absorption and high loading capability; Used in wide range of colors with no color impact; Will not reduce gloss; Excellent gloss retention; Reduces yellowing in alkyds; Easily dispersed (7+ Hegman)
  • UV coatings: RMC reduction (formulation extender); Improves photoinitiator efficiency; Will not adversely affect speed or depth of cure (UV transparent); Easily dispersed
  • Organic colored pigments: As pigment extender, invisible up to 5%; Inert; Excellent weatherability; Low oil absorption; Will not impact hue; Easily dispersed (7+ Hegman)

Information provided by J.M. Huber Corporation

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Physical PropertiesMetricEnglishComments
Specific Gravity 2.42 g/cc2.42 g/cc
Bulk Density 0.300 g/cc0.0108 lb/in³loose; ASTM B212-89
 0.500 g/cc0.0181 lb/in³packed; ASTM B527-85
Brightness 99 %99 %Z, 1.18103
Oil Absorption >= 31 %>= 31 %
Moisture Absorption 0.400 %0.400 %
Particle Size 1.0 µm1.0 µmd50, Horiba 5100
pH 9.89.8not a buffer; ASTM 1208
 
Mechanical PropertiesMetricEnglishComments
Hardness, Mohs 3.03.0
 
Optical PropertiesMetricEnglishComments
Refractive Index 1.571.57
 
Component Elements PropertiesMetricEnglishComments
Na2O <= 0.040 %<= 0.040 %soluble
 
Descriptive Properties
Al(OH)3 (%)99.5
ColorWhite
FunctionalityFire Retardancy
 Ultra Fine Particle Size
Functionality: Optical effectsTitanium Dioxide (TiO2) Extender
Market/Application: Building & ConstructionPaints & Coatings
Market/Application: IndustrialInks

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

EHUBER772 / 300878

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