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(4-Carboxybutyl)triphenylphosphonium bromide, Sigma-Aldrich®

Catalog Number: (8.18330.0050)

Supplier: Merck

Description: (4-Carboxybutyl)triphenylphosphonium bromide, Sigma-Aldrich®

UOM: 1 * 50 g

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1-Heptyl-4-(4-pyridyl)pyridinium bromide ≥95%, Sigma-Aldrich®

Catalog Number: (377783-5G)

Supplier: SIGMA ALDRICH MICROSCOPY

Description: 1-Heptyl-4-(4-pyridyl)pyridinium bromide,95%

UOM: 1 * 5 g

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Potassium bromide, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

Catalog Number: (1.04905.0500)

Supplier: Merck

Description: Potassium bromide, EMSURE® ACS, Reag. Ph. Eur. for analysis, Supelco®

UOM: 1 * 500 g

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Copper(II) bromide for synthesis, Sigma-Aldrich®

Supplier: Merck

Description: Copper(II) bromide for synthesis, Sigma-Aldrich®

Mercury(II) bromide ACS, Reag. Ph. Eur. for analysis, Supelco®

Supplier: Merck

Description: Mercury(II) bromide ACS, Reag. Ph. Eur. for analysis, Supelco®

Pentafluorobenzyl bromide for synthesis, Sigma-Aldrich®

Catalog Number: (8.41643.0005)

Supplier: Merck

Description: Pentafluorobenzyl bromide for synthesis, Sigma-Aldrich®

UOM: 1 * 5 mL

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Potassium bromide, Suprapur® for trace analysis, Supelco®

Supplier: Merck

Description: Potassium bromide, Suprapur® for trace analysis, Supelco®

Potassium bromide, Uvasol® for IR spectrophotometry, Supelco®

Supplier: Merck

Description: Potassium bromide is transparent from the near UV to long wave IR wavelengths. In IR-spectroscopy, solid samples which are difficult to melt or dissolve in any suitable IR-transmitting solvent, are analysed by grinding with potassium bromide powder, and pressing into a disc. This procedure has a high quality demand of the used potassium bromide. Potassium bromide Uvasol® is adjusted to a mean particle size of 150 μm. This is sufficient for the preparation of perfectly good pellets without the need for further pre-treatment and the associated risk of contamination. It also retains its powdery form over a period of years if stored in an airtight condition. Its physical suitability for pelletising is checked by a special application test and its chemical purity established by full spectrum FT-IR analysis.