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
515477
4,4′-Di-tert-butyl-2,2′-dipyridyl
98%
Synonym(s):
4,4′-Bis(tert-butyl)-2,2′-bipyridine, BBBPY
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About This Item
Quality Segment
assay
98%
mp
159-161 °C (lit.)
SMILES string
CC(C)(C)c1ccnc(c1)-c2cc(ccn2)C(C)(C)C
InChI
1S/C18H24N2/c1-17(2,3)13-7-9-19-15(11-13)16-12-14(8-10-20-16)18(4,5)6/h7-12H,1-6H3
InChI key
TXNLQUKVUJITMX-UHFFFAOYSA-N
General description
Application
- In the synthesis of oxidovanadium(IV) complex [VOCl2(dbbpy)(H2O)], which is used as a catalyst for the epoxidation of cyclooctene in the presence of tert-butyl hydroperoxide.
- In iron-catalyzed ortho-allylation of 1-arylpyrazoles via C-H activation.
- In iridium-catalyzed borylation of (hetero)arenes.
- In iron-catalyzed arylation of heterocycles in the presence of metallic Mg.
- In nickel-catalyzed decarboxylation of block copolymers.
1 of 1
This Item | |||
|---|---|---|---|
| description 98% | description 97% | description 99% | description 99.5%, purified by sublimation |
| assay 98% | assay 97% | assay 99% | assay 99.5% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| mp 159-161 °C (lit.) | mp 61-63 °C (lit.) | mp 169-174 °C (lit.) | mp 169-174 °C (lit.) |
Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Acute Tox. 3 Dermal - Acute Tox. 3 Oral
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
dust mask type N95 (US), Eyeshields, Gloves
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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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