Hexadecyl Trimethyl Ammonium Bromide (CTAB) – Comprehensive User Guide
Table of Contents
1. Product Specifications & Comparative Analysis
Basic Parameters
- CAS No.: 57-09-0
- Molecular Formula: C19H42BrN
- Molecular Weight: 364.45 g/mol
- Appearance: White to off-white crystalline powder
- Purity: ≥99% (Industrial Grade)
- Melting Point: 248–250°C
- Solubility: 13 g/L in water (20°C), soluble in ethanol, methanol, and isopropanol
Comparative Analysis with Similar Surfactants
| Parameter | CTAB | Cetrimonium Chloride | DTAB |
|---|---|---|---|
| Cationic Charge Density | High | Moderate | High |
| Biodegradability | Moderate | High | Low |
| Critical Micelle Concentration (CMC) | 0.92 mM | 1.05 mM | 1.30 mM |
2. Key Applications & Functional Properties
Core Industrial Uses
- Water Treatment: Effective biocide and algaecide for cooling towers; achieves >99% microbial inhibition at 50 ppm.
- Pharmaceuticals: DNA/RNA extraction agent with cell membrane lysis efficiency >95%.
- Textile Processing: Softening agent reducing fabric stiffness by 40–60% at 2–5% concentration.
- Cosmetics: Antistatic agent in hair conditioners (0.5–2% formulations).
Performance Advantages
- Stable in acidic environments (pH 2–6)
- Compatible with nonionic & amphoteric surfactants
- Low foam generation during CIP processes
3. Operational Guidelines & Best Practices
Recommended Dosages
| Application | Concentration Range | Temperature Range |
|---|---|---|
| Bacterial Biofilm Removal | 100–200 ppm | 40–60°C |
| Nanoparticle Synthesis | 5–10 mM | 25–80°C |
Safety Protocols
- Use PPE: Nitrile gloves, safety goggles
- LD50 (rat, oral): 410 mg/kg
- Biodegradation: 78% in 28 days (OECD 301F)
4. Industry Case Studies
Case 1: Municipal Water Treatment Plant
- Challenge: Algal blooms causing 30% efficiency loss
- Solution: CTAB dosing at 75 ppm for 72 hours
- Result: 98% algae elimination, $12K/month OPEX reduction
Case 2: Biotech Research Lab
- Challenge: Low DNA yield from fungal samples
- Solution: 3% CTAB lysis buffer optimization
- Result: 300% yield improvement, PCR success rate ↑ to 92%
5. Client Success Stories
Shanghai Yubio Biotech Co., Ltd.
- Application: DNA extraction kits
- Volume: 500 kg/month
- Feedback: “CTAB purity consistency reduced QC failures by 65%.”
Guangzhou Textile Group
- Application: Fabric softener production
- Volume: 2 MT/month
- Feedback: “20% lower dosage required vs. competitors’ surfactants.”
6. Request a Custom Quote
Optimize your formulations with CTAB tailored to your requirements:
- Email: info@vivalr.com
- Phone: (86) 15866781826
Technical support available 24/7 for formulation optimization and regulatory compliance.



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