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MilliporeSigma

221864

Sigma-Aldrich

Potassium bromide

≥99% trace metals basis

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25 G
$178.00
100 G
$418.00

About This Item

Linear Formula:
KBr
CAS Number:
Molecular Weight:
119.00
EC Number:
MDL number:
UNSPSC Code:
12352302
eCl@ss:
38050405
PubChem Substance ID:
NACRES:
NA.21
Assay:
≥99% trace metals basis
Form:
powder or crystals

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$178.00


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vapor pressure

<0.01 mmHg ( 20 °C)
1 mmHg ( 795 °C)

assay

≥99% trace metals basis

form

powder or crystals

technique(s)

FTIR: suitable

pH

5-6 (25 °C, 119 g/L)

mp

734 °C (lit.)

SMILES string

[K+].[Br-]

InChI

1S/BrH.K/h1H;/q;+1/p-1

InChI key

IOLCXVTUBQKXJR-UHFFFAOYSA-M

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1 of 4

This Item
1.04907746444793604
form

powder or crystals

form

solid

form

powder

form

powder

assay

≥99% trace metals basis

assay

-

assay

≥99%

assay

≥99%

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100

grade

FT-IR grade

grade

-

grade

ACS reagent, anhydrous

grade

anhydrous

pH

5-6 (25 °C, 119 g/L)

pH

5.5-8.5 (20 °C, 50 g/L in H2O)

pH

5.0-8.8 (25 °C, 5%)

pH

5-6 (25 °C, 119 g/L)

mp

734 °C (lit.)

mp

730 °C

mp

734 °C (lit.)

mp

734 °C (lit.)

General description

Potassium bromide, a water-soluble inorganic salt, is redox reagent.[1]

Application

May be used for removal of peripheral membrane proteins.
Potassium bromide may be used along with:
  • Cerium(IV) ammonium nitrate (CAN) for synthesizing dibromides via alkene bromination.[2]
  • Sodium perborate for synthesizing brominated anilines via oxidative bromination of unprotected aromatic amines.[3]
  • Hydrochloric acid and hydrogen peroxide for the bromination of active methylene and methyne compounds with high chemoselectivity.[4]
Suitable for use with FT-IR spectrometers

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


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Questions

1–4 of 4 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  3. Would like to confirm if the material needs to be dried prior to ftir analysis? And if so what is the drying condition and duration.

    1 answer
    1. Grind the KBr powder very fine in an agate mortar and pestle and dry it in a vacuum oven for approximately 3 hours at 75-80 °C. Following the drying, cool the product in a desiccator and then make a KBr pellet and obtain an IR spectrum to ensure that a baseline with no peaks (no contaminants) is obtained.

      Helpful?

  4. Dear Sr, I want to confirm if the product: https://www.sigmaaldrich.com/AR/es/product/sigald/221864 is suitable for FTIR spectroscopy

    1 answer
    1. Yes. This product is suitable for FT-IR spectroscopy.

      Helpful?

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