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244260

Sigma-Aldrich

Hydrobromic acid

ACS reagent, 48%

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About This Item

Empirical Formula (Hill Notation):
HBr
CAS Number:
10035-10-6
Molecular Weight:
80.91
Beilstein:
3587158
MDL number:
MFCD00011323
UNSPSC Code:
12352106
PubChem Substance ID:
329752491
NACRES:
NA.21
Pricing and availability is not currently available.

grade

ACS reagent

Quality Level

200

vapor density

2.8 (vs air)

vapor pressure

320 psi ( 21.1 °C)
8 mmHg ( 25 °C)

description

48% aqueous HBr

Assay

47.0-49.0% (ACS specification)
48%

form

liquid

ign. residue

≤0.002%

density

1.49 g/mL at 25 °C (lit.)

anion traces

SO42- and SO32-: ≤0.003%
chloride (Cl-): ≤0.05%
iodide (I-): ≤0.003%
phosphate (PO43-): ≤0.001%

cation traces

Fe: ≤1 ppm
Se: ≤0.01 ppm
heavy metals: ≤5 ppm (by ICP-OES)

SMILES string

Br

InChI

1S/BrH/h1H

InChI key

CPELXLSAUQHCOX-UHFFFAOYSA-N

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General description

Hydrobromic acid is a strong acid that can be used as a brominating reagent for the electrophilic and radical bromination of olefins, alkynes, and ketones.

Application

Hydrobromic acid can be used as a brominating agent:
  • For the regioselective bromination of anilides to bromoanilides.
  • Oxidative bromination of olefins, alkynes, and ketones to corresponding dibrominated alkanes, dibrominated alkenes, and α-bromoketones.
It can also be used as a catalyst for the aerobic photooxidation of alcohols to corresponding carboxylic acids.

Other Notes

ACS specifications same as product 438065

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H314,H335

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
MKCT3309
MKCW8921
MKCT0609
MKCS1977
MKCS1976

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Sigma-Aldrich

210013

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Hydrobromic acid-catalyzed Friedel-Crafts type reactions of naphthols.
Xu C, et al.
Royal Society of Chemistry Advances, 4(4), 1559-1562 (2014)
The oxidation of acetophenones to arylglyoxals with aqueous hydrobromic acid in dimethyl sulfoxide.
Floyd MB, et al.
The Journal of Organic Chemistry, 50(25), 5022-5027 (1985)
Production of cellulose nanocrystals using hydrobromic acid and click reactions on their surface.
Sadeghifar H, et al.
J. Mater. Sci., 46(22), 7344-7355 (2011)
Efficient bromination of olefins, alkynes, and ketones with dimethyl sulfoxide and hydrobromic acid.
Song S, et al.
Green Chemistry, 17(6), 3285-3289 (2015)
M Y Mirza
Talanta, 27(2), 101-106 (1980-02-01)
The extraction of Pd(II), Rh(III), Ir(III), Au(III) and Pt(IV) from hydrochloric and hydrobromic acid with 5% tri-iso-octylamine solution in carbon tetrachloride has been studied. The gold extract from hydrochloric acid is yellow and absorbs at 325 nm, the palladium compound
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Questions

1–3 of 3 Questions  

  1. 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?

  2. 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?

  3. Is this HBr solution prepared in glacial acetic acid? If not then if we want to prepare 30% in glacial acetic acid , how can it be done?

    1 answer

    1. This product is prepared in water. See product 248630, a 33% HBr solution in glacial acetic acid, for an option that may meet your requirements. The concentration specification is 31.5% to 34.5% Hydrogen Bromide. Based on the lot-specific Certificate of Analysis information, the product may be diluted to the required 30% using acetic acid. See the links below to a sample Certificate of Analysis and the product page. Please refer to the literature for information on preparing a 30% HBr in acetic acid.
      Sample Certificate of Analysis
      https://www.sigmaaldrich.com/certificates/COFA/24/248630/248630-BULK_______MKCQ8627__.pdf

      248630 Product listing
      https://www.sigmaaldrich.com/product/sigald/248630

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