**Chemical Name:** CTAB, Hexadecyltrimethylammonium Bromide, Cetyltrimethylammonium Bromide, Cetrimonium Bromide, Palmityl Trimethylammonium Bromide
**Other Names:** Cetyl Trimethyl Ammonium Bromide, Cetrimonium Bromide, Bromo Brown Trimethyl Ammonium
**CAS Number:** 57-09-0
**Molecular Formula:** Câ‚₉Hâ‚„â‚‚BrN
**Molar Mass:** 364.45 g/mol
**Grade:** AR (Analytical Reagent)
**Purity:** ≥99.0%
**Moisture Content:** ≤0.5%
**Acidity (in Hâº):** ≤1.0 mmol/100g
**Ethanol Solubility Test:** Qualified
**Heavy Metal Content:** ≤0.0005%
**Ignition Residue:** ≤0.1%
**Appearance:** White microcrystalline powder
**Properties:**
CTAB is a quaternary ammonium salt, known for its hygroscopic nature and stability in acidic conditions. It dissolves well in water (10 parts), is soluble in ethanol, slightly soluble in acetone, and nearly insoluble in ether and benzene. The melting point ranges from 237 to 243°C.
**Toxicity:**
LDâ‚…â‚€ (rat, intravenous): 44 mg/kg. It may cause irritation to the eyes, respiratory system, and skin.
**Applications:**
Used in biochemical research for colorimetric or photometric determination of bismuth and tin. Acts as an intestinal glucose absorption inhibitor, a phase transfer catalyst for the reduction of aromatics and epoxidation of olefins, and serves as a surfactant, fungicide, and disinfectant.
**Storage:**
Store at room temperature (RT). Keep away from moisture and direct sunlight.
**Note:** Always handle with care and follow appropriate safety guidelines when working with this compound.
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