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/418/501/product-dating-information-06-25-mk.pdf
8.21258
2-Methyl-1,3-butadien
(stabilised) for synthesis
Synonym(e):
2-Methyl-1,3-butadien, Isopren
Größe auswählen
| Ihnen/SKU | Verfügbarkeit | Preis |
|---|---|---|
100 mL | Warenkorb auf Verfügbarkeit prüfen | € 29,10 |
1 L | Warenkorb auf Verfügbarkeit prüfen | € 114,00 |
Über diesen Artikel
vapor pressure
605 hPa ( 20 °C)
Quality Segment
assay
≥98.0% (GC)
form
liquid
autoignition temp.
220 °C
potency
>2000 mg/kg LD50, oral (Rat)
expl. lim.
1-9.7 % (v/v)
bp
34 °C/1013 hPa
mp
-146 °C
transition temp
flash point -54 °C
density
0.68 g/cm3 at 20 °C
SMILES string
CC(=C)C=C
InChI
1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3
InChI key
RRHGJUQNOFWUDK-UHFFFAOYSA-N
Analysis Note
Dichte (d 20 °C/ 4 °C): 0,681–0,683
Identität (IR): entspricht
1 of 1
Dieser Artikel | |||
|---|---|---|---|
| assay ≥98.0% (GC) | assay ≥97.0% (GC) | assay ≥97.0% (GC) | assay 99% |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| form liquid | form liquid | form - | form liquid |
| bp 34 °C/1013 hPa | bp 124 °C/1013 hPa | bp 44 °C (lit.) | bp 34 °C (lit.) |
| mp -146 °C | mp - | mp −141 °C (lit.) | mp −146 °C (lit.) |
| density 0.68 g/cm3 at 20 °C | density 0.82 g/cm3 at 20 °C | density 0.694 g/mL at 20 °C, 0.691 g/mL at 25 °C (lit.) | density 0.681 g/mL at 25 °C (lit.) |
signalword
Danger
Hazard Classifications
Aquatic Chronic 3 - Carc. 1B - Flam. Liq. 1 - Muta. 2
Lagerklasse
3 - Flammable liquids
wgk
WGK 3
flash_point_f
-65.2 °F - closed cup
flash_point_c
-54 °C - closed cup
Zulassungslistungen
Zulassungslistungen werden hauptsächlich für chemische Produkte erstellt. Für nicht-chemische Produkte können hier nur begrenzte Angaben gemacht werden. Kein Eintrag bedeutet, dass keine der Komponenten gelistet ist. Es liegt in der Verantwortung des Benutzers, die sichere und legale Verwendung des Produkts zu gewährleisten.
78-79-5
Analysenzertifikate (COA)
Suchen Sie nach Analysenzertifikate (COA), indem Sie die Lot-/Chargennummer des Produkts eingeben. Lot- und Chargennummern sind auf dem Produktetikett hinter den Wörtern ‘Lot’ oder ‘Batch’ (Lot oder Charge) zu finden.
Besitzen Sie dieses Produkt bereits?
In der Dokumentenbibliothek finden Sie die Dokumentation zu den Produkten, die Sie kürzlich erworben haben.
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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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