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52365

Sigma-Aldrich

Hexadecyltrimethylammonium bromide

BioUltra, for molecular biology, ≥99.0% (AT)

Synonym(s):

CTAB, Cetrimonium bromide, Cetyltrimethylammonium bromide, Palmityltrimethylammonium bromide

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About This Item

Linear Formula:
CH3(CH2)15N(Br)(CH3)3
CAS Number:
57-09-0
Molecular Weight:
364.45
Beilstein:
3598189
EC Number:
200-311-3
MDL number:
MFCD00011772
UNSPSC Code:
12161900
PubChem Substance ID:
57651369
NACRES:
NA.25

grade

for molecular biology

Quality Level

200

description

cationic

product line

BioUltra

Assay

≥99.0% (AT)

form

powder or crystals

mol wt

micellar avg mol wt 62,000

aggregation number

170

impurities

DNases, none detected
 RNases, none detected
 insoluble matter, passes filter test
 phosphatases, none detected
 proteases, none detected

ign. residue

≤0.2%

loss

≤0.5% loss on drying

pH

5.0-7.0 (25 °C, 0.1 M in H2O)

CMC

0.92
1 mM (20-25°C)

mp

248-251 °C (lit.)

solubility

H2O: 0.1 M at 40 °C, clear, colorless

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

Al: ≤5 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

λ

0.1 M in H2O

UV absorption

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

HLB

10

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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Application

Hexadecyltrimethylammonium bromide has been used for the isolation of plant high molecular weight DNA as well as plant DNA for use in PCR analysis. It has also been used to preciptate nucleic acids.

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Phytochromes are red/far-red photoreceptors that play essential roles in diverse plant morphogenetic and physiological responses to light. Despite their functional significance, phytochrome diversity and evolution across photosynthetic eukaryotes remain poorly understood. Using newly available transcriptomic and genomic data we show
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We address the rheology of assemblies of surfactant-decorated silica nanoparticles irreversibly adsorbed at the gas/liquid interface. Positively charged surfactant molecules (such as CTAB) bind to silica nanoparticle surfaces, and the resulting particle-surfactant complexes adsorb at gas/liquid interfaces. The surfactant molecules
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