Hexadecyl Trimethyl Ammonium Bromide

Hexadecyl Trimethyl Ammonium Bromide

CAS No.: 57-09-0
Molecular Formula: C19H42BrN
Molecular Weight: 364.45
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product description

Hexadecyl trimethyl ammonium bromide also called cetyltrimethylammonium bromide (CTAB), is a cationic surfactant. CTAB is employed for extraction of DNA. CTAB method is efficient, cost and time effective for DNA extraction. CTAB is used as a shaping material and reducing agent for nanoparticle generation.


Chemical Properties
PropertyValue

Melting Point

248-251 °C(lit.)

Bulk density

390kg/m3

Density

1.1107 (rough estimate)

Refractive Index

1.5260 (estimate)

Fp

244 °C

Storage Temp.

Store below +30°C.

Solubility

H2O: 50 mg/mL

Form

Powder

Color

White

Odor

Odorless

PH

5.0-7.0 (25℃, 0.1M in H2O)

PH Range

5 - 7

Water Solubility

13 g/L (20 ºC)

λmax

λ: 260 nm Amax: 0.06λ: 280 nm Amax: 0.05

Sensitive

Hygroscopic

Merck

14,2025

BRN

3598189

Stability:

Stable. Incompatible with strong oxidizing agents. Protect from moisture.

InChIKey

LZZYPRNAOMGNLH-UHFFFAOYSA-M

CAS DataBase Reference

57-09-0(CAS DataBase Reference)

EPA Substance Registry System

Cetyl trimethyl ammonium bromide (57-09-0)


Safety Information

PropertyValue
Hazard symbolsXn, N
Hazard class codes22-37/38-41-50-50/53-36/37/38-48/22
Safety descriptions26-39-61-37/39-60-36
UN dangerous goods numberUN 3077 9/PG 3
WGK Germany3
RTECS numberBQ7875000
F3
TSCATSCA listed
Hazard class9
Packing groupIII
HS code29239000
Storage class11 - Combustible solids
Hazard class (categories)Acute toxicity, Category 4, Oral
Hazardous to the aquatic environment — acute hazard, Category 1
Hazardous to the aquatic environment — long-term hazard, Category 1
Serious eye damage, Category 1
Skin irritation, Category 2
Specific target organ toxicity — repeated exposure, Category 2, Oral
Specific target organ toxicity — single exposure, Category 3
ToxicityLD50 in mice, rats (mg/kg): 32.0, 44.0 i.v. (Isomaa, Bjondahl)

Product Usage

Hexadecyl Trimethyl Ammonium Bromide (CTAB for short), with CAS No. 1119-94-4, is a cationic surfactant. It appears as white crystalline powder, easily soluble in polar solvents such as water and ethanol, with stable chemical properties, and has multiple functions including sterilization, emulsification and antistatic. Its core application is as a phase transfer catalyst in organic synthesis, accelerating the reaction between aqueous and organic phases, and improving reaction efficiency and product purity. It is also widely used in daily chemical, pharmaceutical, water treatment and other fields, serving as a bactericidal disinfectant to kill bacteria and fungi quickly, and as an emulsifier and antistatic agent to improve product performance, being an indispensable functional chemical raw material in many fields with small dosage and significant effect.
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Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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A1: Yes, our company holds a number of internationally recognized core certifications. All production and operation activities strictly follow international environmental, safety and quality standards, and each batch of products is accompanied by a compliance test report to meet the chemical industry requirements in different regions around the world.


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