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Stearalkonium hectorite (MF: C₂₇H₅₂LiMgNNaO₁₂Si₄⁻ MW: 749. 28) is an organic clay mineral derived from hydromica that has been cationically modified with silarcloramide (stearylbenzyldimethylammonium chloride). It belongs to the class of organically modified layered silicates and appears as a white to pale yellow powder. It exhibits excellent rheological control, thickening, suspending, thixotropic, and emulsifying properties, and is widely used in cosmetics, personal care, coatings and inks, and pharmaceutical applications.
| Item | Specification |
| Melting point | >300°C (decomposition) |
| Boiling Point | N/A |
| Density | 1.6–1.8 g/cm³ |
| Flash point | N/A |
| PH | 7–9 (5% aqueous dispersion) |
| HLB | 3–5 (lipophilic) |
| Loss on Ignition | 30–35% (800°C, 2 h) Thixotropy: Significant thixotropy; thins under shear |
| Solubility | Insoluble in water; easily dispersible in medium- to low-polarity solvents (e.g., mineral oils, vegetable oils, alcohols). |
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