AMBERLITE™ XAD™ Adsorbent Resins

 

 

AMBERLITE™ XAD™ polymeric adsorbents are very porous spherical polymers based on highly crosslinked, macroreticular polystyrene, aliphatic, or phenol-formaldehyde condensate polymers. Their high internal surface areas can adsorb and then desorb a wide variety of different species depending on the environment in which they are used.
For example, in polar solvents such as water, polymeric adsorbents exhibit non-polar or hydrophobic behaviour and so can adsorb organic species that are sparingly soluble. This hydrophobicity is most pronounced with the styrenic adsorbents. In non-polar solvents, such as hydrocarbons, etc. most adsorbents exhibit slightly polar or hydrophilic properties and so will adsorb species with some degree of polarity. This polarity is most pronounced with the acrylic adsorbents and the phenolic adsorbents.
Purification strategies are developed to utilize these performance characteristics. In capture/concentration mode, Amberlite™ XAD™ media provide an excellent first purification step in the recovery of phenolic compounds or chlorinated hydrocarbons. In some applications XAD resins perform decolorization. Amberlite™ XAD™ adsorbents can be used in both, batch and (preferably) column operations.

 

For sampling, pricing and availability of AMBERLITE™ XAD™ adsorbent resins, please contact your Rohm and Haas sales representative.

 

 

AMBERLITE™	Matrix	Surface area (m2/g)	Av. Pore diameter (Å)	Mean diam. (µ)	UC D90/D40	Applications
XAD™4	pStyDVB*	750	100	640	1.6	Removal of aromatic hydrocarbons such as phenols and pesticides from wastes. High surface area and small pores. Ideal for the extraction of smaller molecules such as phenol. Hydrophobic.
XAD™16N	pStyDVB*	800	150	700	1.6	Removal of aromatic hydrocarbons such as phenols and pesticides from wastes or polar solvents. High surface area and medium sized pore for the adsorption of large color bodies. Excellent regenerability. Hydrophobic.
XAD™1180N	pStyDVB*	500	400	530	1.6	Removal of very large organic molecules from aqueous solutions or polar solvents. Hydrophobic.
XAD™1600N	pStyDVB*	800	150	400	1.2	Removal of aromatic hydrocarbons such as phenols and pesticides from wastes or polar solvents. Monodisperse. Low swelling between solvent and aqueous solutions. High surface area, excellent separation of different organic species in chromatographic processes. Hydrophobic.
XAD™7HP	Aliphatic ester	500	450	560	1.7	Adsorption of ketones, esters and aliphatic compounds from polar solvents. Removal of polar compounds from non-aqueous solvents. Purification of bleach plant effluents from kraft pulp mills. Hydrophilic.
XAD™761	Formo- phenolic	200	600	700	1.5	Removal of high molecular weight water soluble color bodies aqueous solutions such as glycerol or fermentation broth. Contains phenolic hydroxyl and methylol groups. Hydrophilic.
*pStyDVB = Polystyrene DVB

 

 

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