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44340 Sigma-Aldrich

Dowex® 1X8 chloride form

chloride form, strongly basic, 200-400 mesh



Related Categories Analytical/Chromatography, Anion Exchange Media, Dowex Strong Anion Exchangers, Resins & LC Separation Media, Resins and Media More...
parameter   66 °C max. temp.
cross-linkage   8%
moisture   39-45%
loss   ~40% loss on drying, 110 °C
matrix   styrene-divinylbenzene (gel)
particle size   200-400 mesh
operating pH   0 - 14
capacity   1.2 meq/mL by wetted bed volume


Frequently Asked Questions

Frequently Asked Questions are available for this Product.


Strongly basic (type I) anion exchange resin for fine chemical processing; meets requirements of FDA Food Additive Regulation 21 CFR 173.25.

Dowex® 1X8 chloride form is a strongly basic (type I) anion exchange resin for fine chemical processing. Dowex® has been used to determine trace levels of rhodium and platinum in environmental biological samples.


100, 500 g in poly bottle

2.5 kg in poly bottle

Legal Information

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

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

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If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
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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, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
How can a Dowex type 1 resin in the chloride form be converted to the carbonate form?
As one might expect, the procedure requires the use of sodium carbonate (Na2CO3). Citation: Journal of Experimental Medicine, 120, 1007-1018 (1965). From page 1011 of that paper: "A 2 mL column of washed Dowex-1X8 200 to 400 mesh, in the chloride form, was converted to the carbonate form by washing with 1 M Na2CO3 until no chloride could be detected in the eluate. It was then washed with distilled water until the pH of the eluate reached neutrality." The simplest test for chloride is to use a dilute silver nitrate solution. If mixing a few drops of the eluate with a few drops of a silver nitrate solution results in a silver chloride precipitate forming, that would an indication that the eluate contains chloride. You could also use a chloride-specific electrode, if you have access to one.
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