Buy polymers · Water-soluble & biomedical
Buy Polyethyleneimine.
Find catalog suppliers and compare buying options for Polyethyleneimine. Use the material details below to match the right grade, molecular-weight range, and pack size.
Buying overview
Know what you are comparing.
A cationic polymer whose branching, molecular weight, and solution form affect complexation and delivery behavior.
Common short name: PEI
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Supplier listings
Compare Polyethyleneimine prices.
The table brings different pack sizes and catalog contexts together. Price per gram is a useful first pass, but it is not a substitute for matching grade and molecular-weight range.
| Supplier / catalog | Specification | Pack | Listed price | Normalized price | Availability |
|---|---|---|---|---|---|
SC SciPoly135 |
PolyethyleneimineSciPoly product page · public variation price | 250 g | USD $60.00 | $0.24 / g | Listed price · verify current pageChecked 2026-09-04 |
SC SciPoly135 |
PolyethyleneimineSciPoly product page · public variation price | 100 g | USD $30.00 | $0.30 / g | Listed price · verify current pageChecked 2026-09-04 |
SA Sigma-Aldrich181978 |
Branched · Mn ~60,000 / Mw ~750,00050 wt. % aqueous solution · PEI | 100 g | USD $123.00 | $1.23 / g | Check listing for stockChecked 2026-09-03 |
SA Sigma-Aldrich408700 |
Average MW 1,800Branched PEI · 50 wt. % solution | 5 mL | USD $62.10 | $12.42 / mL | Check listing for stockChecked 2026-09-03 |
SA Sigma-Aldrich181978 |
Branched · Mn ~60,000 / Mw ~750,00050 wt. % aqueous solution · PEI | 5 g | USD $67.00 | $13.40 / g | Check listing for stockChecked 2026-09-03 |
Supplier catalogs
Open the catalogs behind the comparison.
These links lead to current supplier search pages so you can review additional grades, pack sizes, and availability beyond the checked rows above.
SciPoly catalog checked 2026-09-04: 2 matching product pages reviewed and 2 public pack prices captured.
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