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DISPERAL 60
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DISPERAL 60

DISPERAL 60 is a high-purity, acid dispersible boehmite. It exhibits a unique combination of purity, consistency, and dispersibility that makes it an excellent material for use in colloidal applications. The Sasol range of dispersible boehmites has traditionally been used in application such as sol-gel ceramics, catalysis, refractory materials, rheology control, and surface frictionizing.
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Identification & Functionality

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Features & Benefits

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Product Background

DISPERAL is the trademark for the high-purity, highly dispersible boehmite powders and sols/dispersions manufactured by Sasol in Brunsbüttel, Germany, and in Lake Charles, Louisiana, USA. These boehmites (alumina hydrates), which are nano-sized in the dispersed phase, exhibit a unique combinations of purity, consistency and dispersibility that make them excellent materials for use in colloidal applications. The Sasol range of dispersible boehmites has traditionally been used in applications such as sol-gel ceramics, catalysis, refractory materials, rheology control and surface frictionizing. Other applications include surface coating as well as paint detackification, polymeradditives and functional fillers.

Applications & Uses

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Properties

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Dispersible in
Acid
Chemical Properties
ValueUnitsTest Method / Conditions
Aluminium Oxide Contentmin. 80%-
Silicon Dioxide Contentmax. 0.025%-
Ferric Oxide Contentmax. 0.020%-
Physical Properties
ValueUnitsTest Method / Conditions
Crystallite Size (120)45 - 60nm-
Dispersed Particle Size (d50 water, pH 7)0.5 - 1.5µm-
Dispersed Particle Size (d50 water, pH 4)0.3 - 0.4µm-
Pore Volume0.7 - 1.0ml/g-

Technical Details & Test Data

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Typical Particle Size Distribution of DISPERAL 60 in Water

 

Sasol DISPERAL 60 Typical Particle Size Distribution of DISPERAL 60 in Water

Preparation of DISPERAL 60 Dispersions

In non-polar solvent (toluene or xylene)

In order to prepare a DISPERAL 60 dispersion of 25 wt. % DISPERAL 60 content, put 50 g of DISPERAL 60 powder and 16.7 g of wetting agent MARLOWET 4538 (available from Sasol) under intensive stirring into 133.3 g of xylene or toluene. Mix it with a stirrer and ultrasound for about two minutes. Typically the viscosity is below 10 mPa·s.

In polar solvent (isopropanol)

In order to prepare a DISPERAL 60 dispersion of 20 wt. % DISPERAL 60 content, put 40 g of DISPERAL 60 powder and 20 g of wetting agent MARLOWET 4538 (available from Sasol) under intensive stirring into 140 g of isopropanol. Mix it with a stirrer and ultrasound for about two minutes. Typically the viscosity is below 10 mPa·s.

In water (pH 7)

In order to prepare a DISPERAL 60 dispersion of 20 wt. % DISPERAL 60 content, put 40 g of DISPERAL 60 powder and 38 g of dispersing aid (available from Lubrizol, BASF or Byk Chemie) under intensive stirring into 122.0 g of water. Mix it with a stirrer and ultrasound for about two minutes. Typically the viscosity is below 50 mPa·s.

In water (pH 3 – 5)

In order to prepare an alumina sol of 10 (30) wt. % solid content, pour 10 g (30 g) of DISPERAL 60 powder under intensive stirring into 90 g (70 g) of 0.09 – 0.18 (0.34 – 0.68) % HN03. After stirring for 30 minutes, the sol is ready for use.

Packaging & Availability

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Regional Availability

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DISPERAL 60 Technical Data Sheet
Technical Data Sheet
DISPERAL 60
Technical Data Sheet
Products: DISPERAL 60
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