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87708

Supelco

Tetramethylammonium bromide

suitable for ion pair chromatography, LiChropur™, ≥99.0% (AT)

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About This Item

Linear Formula:
(CH3)4N(Br)
CAS Number:
64-20-0
Molecular Weight:
154.05
Beilstein/REAXYS Number:
3620955
EC Number:
200-581-2
MDL number:
MFCD00011626
UNSPSC Code:
23151817
PubChem Substance ID:
329769598
NACRES:
NB.21
Pricing and availability is not currently available.

description

cationic

Quality Level

100

assay

≥99.0% (AT)

form

crystals

quality

LiChropur™

technique(s)

ion pair chromatography: suitable

mp

>300 °C (lit.)

λ

10 % in H2O

UV absorption

λ: 240 nm Amax: 0.06
λ: 250 nm Amax: 0.03
λ: 260 nm Amax: 0.02
λ: 500 nm Amax: 0.02

suitability

corresponds to standard for filter test

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1 of 4

This Item
241571122335C47000
4-Quinolinol 98%

H58005

4-Quinolinol

Quinoline reagent grade, 98%

241571

Quinoline

8-Quinolinol N-oxide 98%

122335

8-Quinolinol N-oxide

5-Chloro-8-quinolinol 95%

C47000

5-Chloro-8-quinolinol

assay

98%

assay

98%

assay

98%

assay

95%

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

100

mp

200-202 °C (lit.)

mp

−17-−13 °C (lit.)

mp

135-138 °C (lit.)

mp

122-124 °C (lit.)

General description

Ion-pairing reagents, when used as mobile phase additives, promote the analysis of ionic and highly polar substances on reversed phase HPLC columns. The purity of mobile phase additives is of highest significance for their effective application. Sigma-Aldrich makes available a variety of tailor-made reagents for anionic (quaternary ammonium and phosphonium salts) and cationic (alkanesulfonates) separations. All mobile phase additives are tested thoroughly with special consideration on the demands of modern reversed phase HPLC:

Application


  • pH Standardization in Analytical Chemistry: Buffers serve as critical components in the batch-to-batch reproducibility studies for primary pH methods, ensuring high precision in pH measurement across various scientific disciplines, from pharmaceuticals to environmental science (Asakai et al., 2024).



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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

pictograms

Skull and crossbones
GHS06

signalword

Danger

hcodes

H300

Hazard Classifications

Acute Tox. 2 Oral

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

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    Hui Chong et al.
    Langmuir : the ACS journal of surfaces and colloids, 28(4), 2091-2098 (2011-11-08)
    A new water-soluble conjugated polymer containing fluorene and boron-dipyrromethene repeat units in the backbones (PBF) that exhibits red emission was synthesized and characterized. Cationic PBF forms uniform nanoparticles with negatively charged disodium salt 3,3'-dithiodipropionic acid (SDPA) in aqueous solution through
    Marta Matvienko et al.
    PloS one, 8(2), e55913-e55913 (2013-02-15)
    Several applications of high throughput genome and transcriptome sequencing would benefit from a reduction of the high-copy-number sequences in the libraries being sequenced and analyzed, particularly when applied to species with large genomes. We adapted and analyzed the consequences of
    Yusuke Ide et al.
    Chemical communications (Cambridge, England), 48(56), 7073-7075 (2012-06-12)
    Hiroshima University Silicate-1 (HUS-1), composed of silicate sheets with a halved sodalite cage and the interlayer tetramethylammonium (TMA) cation in the cage, was modified with dimethyldichlorosilane to form the organic derivative in which a dimethyl group was grafted onto the
    Konrad Rykaczewski et al.
    Langmuir : the ACS journal of surfaces and colloids, 29(3), 881-891 (2012-12-25)
    The prospect of enhancing the condensation rate by decreasing the maximum drop departure diameter significantly below the capillary length through spontaneous drop motion has generated significant interest in condensation on superhydrophobic surfaces (SHS). The mobile coalescence leading to spontaneous drop
    Lina Barreto et al.
    Eukaryotic cell, 10(9), 1241-1250 (2011-07-05)
    Potassium homeostasis is crucial for living cells. In the yeast Saccharomyces cerevisiae, the uptake of potassium is driven by the electrochemical gradient generated by the Pma1 H(+)-ATPase, and this process represents a major consumer of the gradient. We considered that
    View All Related Papers

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