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PURAL MG 63 HT
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PURAL MG 63 HT

PURAL MG 63 HT is a hydrotalcite product. It may be used in the manufacture of plastic materials and articles, and is approved by the FDA for use as a component of polymeric food packaging. Consequently, PURAL MG 63 HT may properly be considered GRAS when used as a polymer additive.
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Identification & Functionality

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Features & Benefits

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Plastics Features
Product Background

The collected and refined know-how to produce alumina hydrates via the sol-gel technique is used by Sasol to prepare other inorganic oxides or mixed oxides. The properties of these inorganic specialty materials are leading Sasol into new, interesting fields of research and application. One of these specialties is the hydrotalcite family (aluminium-magnesium compounds) which is obtained by hydrolysis of mixed alcoholates. Compared to alumina hydrates, hydrotalcites are even more alkaline in nature. Basicity is adjustable by increasing the Mg/Al ratio and/or incorporating anions other than OH-. Hydrotalcites have a double-layered metal hydroxide structure. The layers consist of magnesium and aluminium hydroxide octahedra sharing edges. Additional interstitial anions between the layers compensate the charge of the crystal and determine the size of the interlayer distance (basal spacing). While hydrotalcites are accessible through the corresponding metal salts, the metal alcoholate route, patented by Sasol, has advantages over other synthesis routes. Most important is that the Al/Mg ratio can be varied over a wide range. In addition, it is now possible to obtain hydrotalcites with a purity and a controlled anion content that have to date been unavailable.

Applications & Uses

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Properties

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Chemical Properties
ValueUnitsTest Method / Conditions
Aluminium Oxide : Magnesium Oxide Content37 : 63wt%-
CO3 2- Content10wt%-
L.O.I. (3h, 1,000 °C)44wt%-
L.O.D. (3h, 110 °C)3wt%-
Physical Properties
ValueUnitsTest Method / Conditions
Surface Area16m2/g-
Loose Bulk Density350g/l-
Powder Particle Size (cilas d50)4 - 6μm-
Crystallite Size (003)800nm-

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Packaging & Availability

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Regional Availability

Documents (1)

Document Name
Type
Products
Technical Data Sheet
PURAL MG 63 HT, PURAL MG 30, PURAL MG 70
Technical Data Sheet
Products: PURAL MG 63 HT, PURAL MG 30, PURAL MG 70