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213349

Sigma-Aldrich

Ammonium bromide

ACS reagent, ≥99.0%

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About This Item

Linear Formula:
NH4Br
CAS Number:
12124-97-9
Molecular Weight:
97.94
EC Number:
235-183-8
MDL number:
MFCD00011419
UNSPSC Code:
12352302
eCl@ss:
38050407
PubChem Substance ID:
329752145
NACRES:
NB.24

grade

ACS reagent

Quality Level

200

vapor pressure

1 mmHg ( 198.3 °C)

Assay

≥99.0%

form

powder or crystals

impurities

≤0.005% insolubles

ign. residue

≤0.01%

pH

4.5-6.0 (25 °C, 5%)

mp

452 °C (lit.)

density

2.43 g/mL at 25 °C (lit.)

anion traces

bromate (BrO3-): ≤0.002%
chloride (Cl-): ≤0.2%
iodide (I-): ≤0.005%
sulfate (SO42-): ≤0.005%

cation traces

Ba: ≤0.002%
Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

N.Br[H]

InChI

1S/BrH.H3N/h1H;1H3

InChI key

SWLVFNYSXGMGBS-UHFFFAOYSA-N

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General description

Laser excited Raman spectral study reveals that 1?0 torsional transitions of the NH4+ ion in phase III of NH4Br were observed at 331cm-1. Neutron diffraction studies have been conducted to evaluate the P-T phase diagram of NH4Br and its deuterated form (ND3Br).

Application

Ammonium bromide may be used in the preparation of organic ammonium tribromides. It may also be used as a reagent during the transformation of benzyl derivatives of halides, amines, alcohols, and aldehydes into respective nitriles via oxidation.

Pictograms

Health hazardExclamation mark
GHS08,GHS07

Signal Word

Danger

Hazard Classifications

Eye Irrit. 2 - Lact. - Repr. 1B - STOT RE 1 - STOT SE 3

Target Organs

Central nervous system, Nervous system

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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Direct oxidative conversion of benzylhalides,-amines,-alcohols, and arylaldehydes to nitriles with trans-3, 5-dihydroperoxy-3, 5-dimethyl-1, 2-dioxolane activated by NH4Br.
Azarifar D and Najminejad Z.
Journal of the Iranian Chemical Society, 12(1), 107-111 (2015)
Veerababurao Kavala et al.
The Journal of organic chemistry, 70(11), 4267-4271 (2005-05-21)
1,2-Dipyridiniumditribromide-ethane (DPTBE) has been synthesized and explored as a new efficient brominating agent. The crystalline ditribromide reagent is stable for months and acts as a safe source of bromine requiring just 0.5 equiv for complete bromination. It has high active
Neutron-diffraction measurements on the P-T phase diagram of ammonium bromide.
Press W, et al.
Physical Review. B, Condensed Matter and Materials Physics, 14(5), 1983-1983 (1976)
Low-Frequency Vibrations in Ammonium Iodide and Ammonium Bromide.
Durig JR and Antion DJ.
J. Chem. Phys. , 51(9), 3639-3647 (1969)
Tawnya G Flick et al.
Analytical chemistry, 84(17), 7511-7517 (2012-08-14)
The presence of many salts, such as sodium chloride, can adversely affect the performance of native electrospray ionization mass spectrometry for the analysis of proteins and protein complexes by reducing the overall molecular ion abundances and distributing signal for any
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