Sasol

DISPAL 28AC2

DISPAL 28AC2 is a modified boehmite alumina designed specifically for coatings and polymer applications. The key property enhancements in coatings formulations are corrosion inhibition and adhesion promotion. DISPAL 28AC2 is amenable to water and solvent-based paint applications and can be mixed directly into your formulation providing enhanced performance with ease.

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Documents

Safety data sheet (SDS)
Product brochure
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Properties

Features And Benefits
Regulatory Status
AICS Listed (Australia)
DSL Listed (Canada)
ENCS Listed (Japan)
IECSC Listed (China)
NZIoC Listed (New Zealand)
PICCS Listed (Philippines)
KECI Listed (Korea)
NECI Listed (Taiwan)
Switzerland Compliant
ISHL Listed (Japan)
Features
Corrosion Resistance
Scratch Resistance
Solvent Compatibility
Rheological Control
Adhesion Promotion
Product Characteristics
Color
White
Physical Form
Powder
Appearance
White fine powder
CAS No.
7732-18-5
1318-23-6
Typical Properties
Value
Unit
Test Method
Surface Area (BET Activation at 550°C for 3 Hours)
280.0
m²/g
Loose Bulk Density
300 - 500
g/l
Free Water (Karl Fisher)
max. 6.5
%
Crystallite Size (120)
4
nm
Carbon Content
6 - 7
%

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Technical product information

Product Highlights

The unique product characteristics of Sasol dispersible boehmites can lead to many advantages for use in different systems. Some key features are:

  • The high purity boehmites are produced under careful control to yield products with consistent quality and reliable performance.
  • The powders are highly dispersible. Low-viscosity nano-sized particle sols can be prepared at room temperature in 10 to 30 minutes with concentrations of 10–40 wt.% AlOOH.
  • The boehmites are versatile. They can be employed under a variety of application conditions, including low or high pH and low or high shear.
  • Sasol also offers boehmites which are dispersible in polar and non-polar organic media.
Recommended Uses & Known Applications

The Sasol range of dispersible boehmites has traditionally been used in applications such as

  • Sol-gel ceramics
  • Catalysis
  • Rrefractory materials
  • Rheology control
  • Surface frictionizing

Other applications include surface coating as well as paint detackification, polymer-
additives and functional fillers.

Storage and Handling

DISPAL boehmite powders are mildly abrasive materials having a Mohs hardness of 3.5 to 4.0. Therefore, handling and storage equipment should be designed for such materials. Examples are aluminium, abrasion resistant carbon steel and polypropylene or epoxy-lined steel. Blower or vacuum systems can be used to move the powders. A minimum of 4,000 ft/min fluidizing velocity is recommended. Boehmite powders will absorb atmospheric moisture and facilities should be designed appropriately. The liquids are readily pumpable using standard centrifugal or positive displacement pumps. Due to the pH range of available products, recommended materials for process equipment include stainless steel, or polymeric-lined steel.

DISPAL boehmite powders are classified as non-toxic nuisance dusts. Exposure to high concentrations of dust may cause physical irritation and drying of skin and eye tissues. Repeated or prolonged contact with alumina sols may cause irritation as well. Handling and shipping procedures should be designed to avoid such contact and to minimize the inhalation of airborne dust. Normal good laboratory practices and operating procedures should ensure personnel safety.

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Sasol Place, 50 Katherine Street
Sandton,  2196
South Africa