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157902

Sigma-Aldrich

1,3-Dibromo-5,5-dimethylhydantoin

98%

Synonym(s):

Dibromantin

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25 G
$38.20
500 G
$144.00
1 KG
$145.00

About This Item

Empirical Formula (Hill Notation):
C5H6Br2N2O2
CAS Number:
Molecular Weight:
285.92
Beilstein:
146024
EC Number:
MDL number:
UNSPSC Code:
12352101
PubChem Substance ID:
NACRES:
NA.22

$38.20


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Quality Level

Assay

98%

mp

197-199 °C (dec.) (lit.)

SMILES string

CC1(C)N(Br)C(=O)N(Br)C1=O

InChI

1S/C5H6Br2N2O2/c1-5(2)3(10)8(6)4(11)9(5)7/h1-2H3

InChI key

VRLDVERQJMEPIF-UHFFFAOYSA-N

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Application

Useful in aromatic bromination of alkoxybenzoic acids[1] and in bromofluorination of alkenes.[2]

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Ox. Sol. 3 - Skin Corr. 1B - Skin Sens. 1

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

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M Hilp
Die Pharmazie, 56(7), 548-551 (2001-08-08)
The identification of lactate according to Ph. Eur. 1997 and DAB 2000 uses the oxidation of lactic acid to pyruvic acid by boiling with bromine water in sulphuric acid. Acetaldehyde arising by decarboxylation is detected according to Legal applying a
M Hilp
Die Pharmazie, 57(1), 45-48 (2002-02-12)
PH. EUR. 2002 uses elemental bromine performing iron limit tests for maleic acid (iron 5 ppm) and titanium dioxide (iron 200 ppm). 1,3-Dibromo-5,5-dimethylhydantoin (DBH) can replace bromine water. For the iron limit test of maleic acid bivalent iron is oxidized
Gloria Hernández-Torres et al.
Organic letters, 14(7), 1858-1861 (2012-03-27)
Organocatalytic stereospecific dibromination of a wide variety of functionalized alkenes was achieved using a stable, inexpensive halogen source, 1,3-dibromo 5,5-dimethylhydantoin, and a simple thiourea catalyst at room temperature. The presence of a tertiary amine enhanced the rate of the dibromination
J Kasai et al.
Rinsho byori. The Japanese journal of clinical pathology, 37(8), 918-922 (1989-08-01)
Legionella spp., the causative organism of legionnaires' disease, were isolated from more than 80% of water samples in cooling towers before washing. Therefore, we evaluated the effect of microbicide treatment of cooling tower water on Legionella spp., other bacteria and
M Hilp
Die Pharmazie, 57(4), 250-251 (2002-05-10)
PH. EUR. 2002 identifies nicotinamid, nicotinic acid, and nikethamide according the reaction of König using cyanogen bromide solution prepared with bromine water and ammonium thiocyanate immediately before use. This colour reaction can be better performed with 1,3-dibromo-5,5-dimethylhydantoin (DBH) and sulphanilic

Questions

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  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

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  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

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