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
145491
2,3-Dimethyl-1,3-butadiene
98%, contains 100 ppm BHT as stabilizer
Synonym(s):
2,3-Dimethylbuta-1,2-diene, 2,3-Dimethylenebutane, Biisopropenyl, Diisopropenyl
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
10 g | Estimated to ship TODAYfromMILWAUKEE | $139.00 |
50 g | Estimated to ship TODAYfromMILWAUKEE | $349.00 |
About This Item
vapor pressure
269 mmHg ( 37.7 °C)
Quality Segment
assay
98%
form
liquid
contains
100 ppm BHT as stabilizer
refractive index
n20/D 1.438 (lit.)
bp
68-69 °C (lit.)
mp
−76 °C (lit.)
density
0.726 g/mL at 25 °C (lit.)
storage temp.
2-8°C
SMILES string
CC(=C)C(C)=C
InChI
1S/C6H10/c1-5(2)6(3)4/h1,3H2,2,4H3
InChI key
SDJHPPZKZZWAKF-UHFFFAOYSA-N
General description
Application
It may be used in the following processes:
- Preparation of 1,3,6-triene derivatives of corresponding 1-aryl-substituted 1,3-dienes by 1,4-hydrobutadienylation in the presence of cobalt catalyst.
- Synthesis of 6-aryl(hetaryl)-3,4-dimethyl-1-nitro-1-cyano-3-cyclohexenes by reacting with gem-cyanonitroethenes.
- As a halogen trap during the study of the photolysis reaction of dibromo adduct of 2,5-diphenyltellurophene.
1 of 1
This Item | |||
|---|---|---|---|
| assay 98% | assay 95% | assay 95% | assay 95% |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| refractive index n20/D 1.438 (lit.) | refractive index n20/D 1.459 (lit.) | refractive index n20/D 1.454 (lit.) | refractive index n20/D 1.462 (lit.) |
| density 0.726 g/mL at 25 °C (lit.) | density 0.94 g/mL at 25 °C (lit.) | density 0.885 g/mL at 25 °C (lit.) | density 0.899 g/mL at 25 °C (lit.) |
| bp 68-69 °C (lit.) | bp 134-136 °C/745 mmHg (lit.) | bp 68-69 °C/14 mmHg (lit.) | bp 65 °C/7 mmHg (lit.) |
| form liquid | form liquid | form liquid | form liquid |
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signalword
Danger
hcodes
Hazard Classifications
Flam. Liq. 2
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
30.2 °F - closed cup
flash_point_c
-1 °C - closed cup
ppe
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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is the boiling point really 76 degrees, or is it -76 degrees?
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The melting point (MP) of the product is -76 °C.
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