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
158496
Proton-sponge®
99%
Synonym(s):
1,8-Bis(dimethylamino)naphthalene, N,N,N′,N′-Tetramethyl-1,8-naphthalenediamine
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
10 g | Check Cart for Availability | $58.80 |
50 g | Check Cart for Availability | $171.00 |
About This Item
$58.80
Quality Segment
assay
99%
form
solid
mp
49-51 °C (lit.)
solubility
chloroform: soluble 50 mg/mL, clear (faint yellow to dark yellow to dark red)
functional group
amine
SMILES string
CN(C)c1cccc2cccc(N(C)C)c12
InChI
1S/C14H18N2/c1-15(2)12-9-5-7-11-8-6-10-13(14(11)12)16(3)4/h5-10H,1-4H3
InChI key
GJFNRSDCSTVPCJ-UHFFFAOYSA-N
General description
Proton-sponge is also referred to as 1,8-dimethylamino naphthalene. It is very strong base with weak nucleophilic character due to steric effects. It also participates in the reactions between arachno-6,9-C2B8H14 and selected acyl chlorides. It has been tested as an effective H+ scavenger.
Application
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| description 99% | description purum, ≥99.0% (NT) | description 99% | description ≥97% |
| assay 99% | assay ≥99.0% (NT) | assay 99% | assay ≥97% |
| solubility chloroform: soluble 50 mg/mL, clear (faint yellow to dark yellow to dark red) | solubility - | solubility - | solubility water: 50 mg/mL, clear, colorless |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| form solid | form solid | form - | form - |
| mp 49-51 °C (lit.) | mp 45-49 °C | mp - | mp 28-30 (lit.) |
| functional group amine | functional group amine | functional group - | functional group - |
signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
235.4 °F - closed cup
flash_point_c
113 °C - closed cup
ppe
dust mask type N95 (US), Eyeshields, Faceshields, Gloves
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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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