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
408700
Poly(ethyleneimine) solution
average Mw 1800, 50 wt. % in H2O
Synonym(s):
Ethyleneimine polymer solution, PEI
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Check Cart for Availability | $62.10 |
250 mL | Check Cart for Availability | $126.00 |
1 L | Check Cart for Availability | $375.00 |
About This Item
$62.10
form
liquid
Quality Segment
mol wt
average Mw 1800
concentration
50 wt. % in H2O
refractive index
n
density
1.08 g/mL at 25 °C
SMILES string
N1CC1.NCCN
InChI
1S/C2H8N2.C2H5N/c3-1-2-4;1-2-3-1/h1-4H2;3H,1-2H2
InChI key
SFLOAOINZSFFAE-UHFFFAOYSA-N
General description
Application
It can be used as a precursor to prepare polyelectrolyte multilayers for the promotion of cell adhesion and growth on implant surfaces.
PEI can act as a reactive template and stabilizing agent in the preparation of metal nanoparticles in aqueous media. The amino groups in the PEI can coordinate with metal ions dissolved in water and reduce their aggregation capability. This results in the formation of smaller nanoparticles.
Features and Benefits
- It has repetitive structural units and aflexible polymer chain.
- Due to the accessibility of a huge number ofamino groups on PEI, it can be modified or functionalized for specific featuressuch as sensitivity, specificity, and biocompatibility.
- Highwater solubility.
Physical form
1 of 1
This Item | |||
|---|---|---|---|
| refractive index n | refractive index n | refractive index - | refractive index - |
| form liquid | form - | form - | form - |
| density 1.08 g/mL at 25 °C | density 1.08 g/mL at 25 °C | density - | density - |
| mol wt average Mw 1800 | mol wt average Mn ~1,200, average Mw ~1300 by LS | mol wt average Mn ~60,000 by GPC, average Mw ~750,000 by LS | mol wt Mn ~60,000, Mw 750,000 |
| concentration 50 wt. % in H2O | concentration 50 wt. % in H2O | concentration 50 wt. % in H2O | concentration 50 % (w/v) in H2O |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
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signalword
Warning
hcodes
Hazard Classifications
Aquatic Chronic 2 - Skin Sens. 1
Storage Class
10 - Combustible liquids
wgk
WGK 2
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How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
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What is the recommended storage temperature for this product?
1 answer-
The recommended storage temperature for this product is room temperature.
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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Can I use this PEI solution for transfection of Plasmid DNA in HEK293T cells?
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This PEI solution has not been verified for use in transfection applications. However, a literature search indicates that this product has been used as a transfection reagent.
Helpful?
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What is the molar ratio of the amino groups (primary, secondary, tertiary) present in polyethyleneimine 408700?
1 answer-
This molar ratio of amino groups is not determined for this product, however, this compound is essentially identical to Lupasol G35. BASF reports that Lupasol G35 has a ratio of primary:secondary:tertiary amine groups of about 1.5:1.4:1.
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