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
675725
4-Bromo-1-butyne
97%
Sinonimo/i:
1-Bromo-3-butyne
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About This Item
Prodotti consigliati
Livello qualitativo
Saggio
97%
Indice di rifrazione
n20/D 1.481
Densità
1.417 g/mL at 25 °C
Gruppo funzionale
alkyl halide
bromo
Stringa SMILE
BrCCC#C
InChI
1S/C4H5Br/c1-2-3-4-5/h1H,3-4H2
XLYOGWXIKVUXCL-UHFFFAOYSA-N
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Categorie correlate
Descrizione generale
Applicazioni
- Macrocycles by cobalt-mediated [2+2+2] co-cyclotrimerization.[2]
- 2,4,5-trisubstituted oxazoles by a gold-catalyzed formal [3+2] cycloaddition.[3]
- Intramolecular 1,3-dipolar cycloaddition to synthesize 1,3,4-oxadiazoles.[4]
- Lactones bearing alkynes for reductive cyclization in the preparation of azulene derivatives.[5]
- Substituted α-pyrones by gold-catalyzed coupling reactions.[6]
Avvertenze
Danger
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Acute Tox. 3 Oral - Flam. Liq. 3 - Skin Sens. 1
Codice della classe di stoccaggio
3 - Flammable liquids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
75.0 °F
Punto d’infiammabilità (°C)
23.9 °C
Dispositivi di protezione individuale
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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