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HYDROTALCITE

Confirms to BP
Magnesium aluminum hydroxycarbonate

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Article No. 04106 Grade
Purity CAS No. 11097-59-9
Molecular Formula CH16Al2Mg6O19·4H2O Molecular Weight 603.98
H.S. Code 2842.9090 Shelf Life 60 Months

Specifications

Appearance A white or almost white, free-flowing, granular powder Solubility Practically insoluble in water. It dissolves in dilute mineral acids with slight effervescence
Identifications - Identification 'A' Solution gives reaction characteristic of aluminium salt
Identification 'B' Solution gives reaction characteristic of magnesium salt Alkalinity 8.0 to 10.0 (pH of 4 % w/v suspension)
Neutralising capacity NLT 260 ml of 0.1 M HCI per gm Arsenic NMT 3 ppm
Sodium NMT 0.1 %w/w Chlorides NMT 0.3%w/w
Sulphates NMT 0.7%w/w Loss on ignition 40.0% to 50.0% w/w
Assay (as Al2O3) 15.3% to 18.7% w/w Assay (as MgO) 36.0% to 44.0% w/w
Ratio Al2O3: MgO 0.40 to 0.45
Revision Date: 13-Oct-2025

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