Technical Data Sheet
Eastman™ Membrane Material M203

Chemical Synonym Cellulose diacetate

Applications Membrane filtration - non food contact Natural gas purification

Product Description
Eastman Membrane Material M203 is a low viscosity, low molecular weight cellulose diacetate. It is supplied as fine, dry, free-flowing powder. The powder is free from coarse particles and excessive fines. Its high purity permits manufacturing of membranes with fewer defects in the separating layer of the membrane, especially for osmotic and gas filtration applications.

For applications that require food contact compliance, please refer to Eastman Membrane Material M203, Food Contact.

Typical Properties

Property	Typical Value, Units
General
Specific Gravity	1.31 g/cm3
Moisture Content	1.5 % max
Hydroxyl Content	3.5 wt %
Acetyl Content	39.8 wt %
Molecular Weight (Average)a	49,000
Tgb	180 °C

^aNumber-average molecular weight value, MWn, are polystyrene-equivalent weights determined using size exclusion chromatography.
^bTg = Glass Transition Temperature (Tg DSC)



Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

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Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

5/5/2020 10:49:17 AM