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Dowex® 50W X8

hydrogen form, strongly acidic, 16-50 mesh

CAS Number:
MDL number:

Quality Level








LPLC: suitable


styrene divinylbenzene (gel)

matrix active group

sulfonic acid functional group

particle size

16-50 mesh


1.1 meq/mL by wetted bed volume

separation technique

cation exchange



InChI key


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General description

also called HCR-W


Dowex 50WX8 (HCR-W) hydrogen form is used:
  • As stripper resin and can be regenerated by 0.25N sulphuric acid when exhausted.
  • As a catalyst.
  • In deionizing supernatant fraction samples for paper chromatography.

Dowex 50WX8 hydrogen form may be used in separation medium for TLC, paper chromatography and LPLC.


100 g in poly bottle

Legal Information

DOWEX is a registered trademark of The Dow Chemical Company or an affiliated company of Dow


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Hazard Statements

Precautionary Statements

Hazard Classifications

Eye Irrit. 2

Storage Class Code

13 - Non Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. What is the form of Product 44504, Dowex® 50W X8?

    This resin is a strongly acidic cation exchanger, in the H+ ionic form.

  4. What is a p.a. grade?

    Pro analysi (per analysis, or p.a.) grade chemicals are tested to similar - although not identical - standards as are ACS reagents. P.a. grade material are suitable for many routine laboratory applications.

  5. What is the particle size of Product 44504, Dowex® 50W X8?

    The mesh size (20-50 mesh) corresponds to a particle size range of approximately 300 to 850 microns.

  6. What is the matrix for the Dowex® 50W X8 resin, Product 44504?

    The fine mesh resin is based on a microporous copolymer of styrene and divinylbenzene (DVB) (styrene-DVB gel).

  7. What is the total exchange capacity of the Dowex® 50W X8 resin, Product 44504, in equivalents per Liter (eq/L)?

    The exchange capacity is approximately 1.7 eq/L or meq/mL. One equivalent means one mole of ionizable functional group on the resin.

  8. What is the suggested operating temperature for Dowex® 50W X8 resin, Product 44504?

    At elevated temperature, operation can cause degradation of functional sites and loss of the ion exchange capacity. The resin degradation  depends on many variables, such as  the level of dissolved oxygen and the presence of catalytic metals on the resin. In general, ~120oC (250oF) is suggested as the maximum operating temperature.

  9. What are the proper storage conditions for Dowex® 50W X8 resin, Product 44504?

    The resins should be stored in a dry cool place. The storage temperature should be kept below 50oC (120oF).Storage temperature below 0oC can cause resin freezing and temperatures below -18oC (0oF) should be avoided. Repeated freeze-thaw can cause damage on the beads. The frozen resin beads should be completely thawed out at room temperature condition before loading and use.

  10. What information do you have on the stability of Dowex® 50W X8 resin, Product 44504?

    The ion exchange resin is tolerant of a wide range of chemical conditions, including most inorganic and organic solutions with exception of strong oxidizing agents. Solutions, such as nitric or chromic acid, bleach or chlorine-generating solutions as well as peroxide should be avoided as these will result in rapid oxidation. Exposure of resins to metal ions, such as iron, manganese and copper should be minimized in oxidizing environments as they can catalyze the oxidation.

  11. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  12. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  13. How can I convert a cation exchange resin from the hydrogen form to the sodium form?

    To convert a cation exhcange resin from the hydrogen form to the sodium form, use two to four bed volumes of 0.5-2.0% NaCl or NaOH.

  14. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Novel ion exchange chromatographic method using conductimetric detection.
Small, Hamish, Timothy S. Stevens, and William C. Bauman.
Analytical Chemistry, 47, 1801-1809 (1975)
Chemical composition and ultrastructure of wild-type and white mutantAspergillus nidulans conidial walls.
Claverie-Martin, Felix, Maria R. Diaz-Torres, and Michael J. Geoghegan.
Current Microbiology, 16, 281-287 (1988)
Hydrogen generation from hydrolysis of sodium borohydride using Ni-Ru nanocomposite as catalysts.
Liu, Cheng-Hong, et al.
International Journal of Hydrogen Energy, 34, 2153-2163 (2009)

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