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D421 is a sort of anion exchange resin which has quaternary ammonium group [-N(CH3)3OH] in the styrene-diethylene benzene copolymer with macroporous structure. This product is used mainly to remove nitrate and nitrite in the water supply and drinking water, it has good selectivity to nitrate;
Product model: D421 Macroporous Strong Base Anion Exchange Resin
Features and applications
D421 is a sort of anion exchange resin which has quaternary ammonium group [-N(CH3)3OH] in the styrene-diethylene benzene copolymer with macroporous structure. This product is used mainly to remove nitrate and nitrite in the water supply and drinking water, it has good selectivity to nitrate; it can be also used in sugar making industry, the strongly basic exchange group and macroporous structure are helpful to the absorption of pigment and impurity in sugar solution.
This product is equivalent to Lewatit MonoPlus SR 7.
Main physical and chemical parameters
|
skeleton |
styrene-divinylbenzene |
|
Appearance |
Creamy white to straw yellow opaque spherical grain |
|
Functional Groups |
quaternary ammonium group [-N(CH3)3OH] |
|
Volume exchange capacity mmol/ml |
≥ 0.5 |
|
Particle size range % (0.315-1.25mm) |
≥ 95% |
|
Moisture content % |
50.0 - 60.0 |
|
Bulk density (g/ml) |
0.65 - 0.75 |
|
Ionic form |
Cl- |