Hexadecyltrimethylammonium bromide
SIGMA/H9151 - BioXtra, ≥99%
Synonym: CTAB; Cetrimonium bromide; Cetyltrimethylammonium bromide; Palmityltrimethylammonium bromide
CAS Number: 57-09-0
Empirical Formula (Hill Notation): C19H42BrN
Molecular Weight: 364.45
EC Number: 200-311-3
MDL Number: MFCD00011772
Linear Formula: CH3(CH2)15N(Br)(CH3)3
Product Type: Chemical
| aggregation number | 170 |
| anion traces | sulfate (SO42-): ≤0.05% |
| application(s) | (DNA extraction) |
| assay | ≥99% |
| cation traces | Al: ≤0.0005% |
| Ca: ≤0.0005% | |
| Cu: ≤0.0005% | |
| Fe: ≤0.0005% | |
| K: ≤0.005% | |
| Mg: ≤0.0005% | |
| Na: ≤0.005% | |
| Pb: ≤0.001% | |
| Zn: ≤0.0005% | |
| CMC | 0.92 mM (20-25°C) |
| density | (2,30 g/cm3) |
| description | cationic |
| form | crystalline |
| powder or crystals | |
| HLB | 10 |
| ign. residue | ≤0.1% |
| impurities | ≤0.001% Phosphorus (P) |
| ≤0.1% Insoluble matter | |
| InChI | 1S/C19H42N.BrH/c1-5-6-7-8 |
| InChI key | LZZYPRNAOMGNLH-UHFFFAOYSA |
| mol wt | micellar avg mol wt 62,000 |
| mp | 248-251 °C (lit.) |
| pH | 5.0-7 (25 °C, 36.4 g/L) |
| product line | BioXtra |
| Quality Level | 200 ![]() |
| SMILES string | [Br-].CCCCCCCCCCCCCCCC[N+ |
| solubility | H2O: 0.1 M, clear, colorless to faintly yellow |
| Application: | Hexadecyltrimethylammoniu • in gold nanorods preparation • as an additive in Ugi reaction • as a surfactant • for homogenisation of intestinal tissues for myeloperoxidase activity |
| Biochem/physiol Actions: | Hexadecyltrimethylammoniu |
| Packaging: | 25, 100, 250 g in glass bottle |
| Symbol | ![]() ![]() ![]() GHS05,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H302 - H315 - H318 - H335 - H373 - H410 |
| Precautionary statements | P273 - P280 - P301 + P312 - P302 + P352 - P305 + P351 + P338 - P314 |
| Hazard Codes | Xn,N |
| Risk Statements | 22-37/38-41-48/22-50 |
| Safety Statements | 26-39-60-61 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 471.2 °F - closed cup |
| Flash Point(C) | 244 °C - closed cup |
| Purity | ≥99% |
| mp | 248-251 °C (lit.) |
| Density | (2,30 g/cm3) |
| UNSPSC | 12352201 |





