A High Performance Water-Soluble Polymer
Aquazol, poly(2-ethyl-2-oxazoline) – also known as PEOX or PEtOx, is a unique and innovative water-soluble polymer which is non-toxic, non-hazardous, and biocompatible. Among other novel characteristics, this polymer is temperature responsive and inversely soluble above its LCST, ~66°C.

Aquazol’s numerous advantages come from its unique design, featuring a stable amide group (found in natural proteins), with the amide nitrogen in the backbone of the polymer and the amide carbonyl group in the dangling side chain. The doubly bonded, electronegative oxygen in the carbonyl is structurally positioned to readily hydrogen-bond. This novel and innovative design of the polymer backbone presents many advantages over other in-class polymers (PVA, PEG, PVP), including:
- Increased Stability under Temperature, Shear, Oxidation, and UV
- Unparalleled “Actives” Loading Capability
- Incredibly Broad Solubility
- Precise Control of Viscosity
- Excellent Film Forming
- No “Unzipping Mechanism” and No Rapid Off-Gassing
- Strong Adhesion
- Impressive Compatibility
- Especially Broad Dispersity
- Ease of Processing

Product Specifications
Aquazol is supplied as 100% active off-white amorphous granules in four different grades, all having a poly-dispersity range of 3 – 4. Aquazol grades are based on kinematic viscosity, as detailed in the table below:
Product Grade |
Kinematic Viscosity Range (10% Aqueous Solution) |
---|---|
Aquazol 5 | 2 – 3 cSt |
Aquazol 50 | 5 – 7 cSt |
Aquazol 200 | 18 – 24 cSt |
Aquazol 500 | 60 – 80 cSt |
For Aquazol polymer with a narrow pdi (<1.9) and targeted molecular weight, please inquire about HP Aquazol.

Chemical Specifications
Chemical Name
Poly(2-ethyl-2-oxazoline)
Formula
-(C5H9NO)n–
CAS Registry Number
25805-17-8

Physical Properties
Property | Result |
---|---|
Appearance | Off-white solid |
Refractive Index | 1.52 |
Glass Temperature | 69°C |
Degradation Onset | 380°C in air |
Vicat Softening Temperature | 70°C |
Cloud Point (5% w/w) | 68°C |
Specific Gravity | 1.14 |
Dielectric Constant | 3.68 |
Solubility Parameter | 25.73 |
Solubility in Water | Freely Soluble |
pH in Aqueous Solution | Neutral |

Industrial Application
Aquazol is available in four different grades, each specifically targeted to provide customers with a different set of attributes for their products. Among other differences, the viscosity varies greatly at the different grades, providing specialized performance in a wide range of industries.

Regulatory Information
- Listed on US TSCA Inventory
- Approved by FDA for use as an indirect food additive (adhesive) under 21 CFR 175.105
- Not found to be in any hazard category defined by SARA Title III, Sections 311 and 312
- EPA approved for use as an inert ingredient when used in non-food use applications
- RoHS (2011/65/EU) Compliant

Technical Information
To find the information necessary for your specific application in printable format, please visit our substantial library of technical data sheets or view our FAQ. Otherwise, please do not hesitate to contact us via our online form. We enjoy answering questions!

Locations
Polymer Chemistry
Innovations, Inc.
4231 S. Fremont Avenue
Tucson, AZ 85714 USA
Locations
Polymer Chemistry
Chocolate Bayou, LLC.
7302 County Road 171
Alvin, TX 77511 USA

Locations
Polymer Chemistry
Innovations, Inc.
4231 S. Fremont Avenue
Tucson, AZ 85714 USA
Locations
Polymer Chemistry
Chocolate Bayou, LLC.
7302 County Road 171
Alvin, TX 77511 USA