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H6269

Sigma-Aldrich

Hexadecyltrimethylammonium bromide

for molecular biology, ≥99%

Synonym(s):
CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide
Linear Formula:
CH3(CH2)15N(Br)(CH3)3
CAS Number:
Molecular Weight:
364.45
Beilstein:
3598189
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.31

grade

for molecular biology

Quality Level

description

cationic

Assay

≥99%

form

powder or crystals

mol wt

micellar avg mol wt 62,000

aggregation number

170

pH

5.0-7 (25 °C, 36.4 g/L)

CMC

0.92
1 mM (20-25°C)

mp

248-251 °C (lit.)

solubility

H2O: 1/10 g/mL

HLB

10

suitability

suitable for DNA precipitation

foreign activity

DNAse, none detected
Endonuclease, none detected
Exonuclease, none detected
NICKase, none detected
RNAse, none detected

SMILES string

[Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C

InChI

1S/C19H42N.BrH/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20(2,3)4;/h5-19H2,1-4H3;1H/q+1;/p-1

InChI key

LZZYPRNAOMGNLH-UHFFFAOYSA-M

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This Item
5236552370H5882
description

cationic

description

cationic

description

cationic

description

cationic

assay

≥99%

assay

≥99.0% (AT)

assay

≥96.0% (AT)

assay

≥98%

form

powder or crystals

form

powder or crystals

form

powder or chunks

form

(solids)

mol wt

micellar avg mol wt 62,000

mol wt

micellar avg mol wt 62,000

mol wt

364.45 g/mol

mol wt

micellar avg mol wt 62,000

aggregation number

170

aggregation number

170

aggregation number

-

aggregation number

170

Application

Hexadecyltrimethylammonium bromide has been used:
  • as a component of DNA extraction buffer and RNA extraction buffer
  • as a constituent of dye dissolution buffer
  • as a surfactant in gold nanorod preparation.

Biochem/physiol Actions

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

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Irrit. 2 - STOT RE 2 Oral - STOT SE 3

Target Organs

Gastrointestinal tract, Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

471.2 °F - closed cup

Flash Point(C)

244 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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25G
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705578-5MG-PW

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MMYOMAG-74K-13

1000309185

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