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Weak Base Anion Exchange Resin

Alfa Chemistry is a new industry and new material technology company integrating R&D, resin production, sales, service. We supply various types of ion exchange resins.

Weak base anion exchange resins have amine functional groups. Most weak Base Anion Exchange Resins with mixed amine group equipped an extremely high operating capacity with the ability to remove both strong and weak acids from solution. They are commonly used in pharmaceutical, food engineering, and chemical engineering, such as the removal of mineral acid, organic acids and other organic materials, especially for removal of high molecular weight organic matters from aqueous solutions under low pH condition.

Here lists our weak base anion exchange resins and their technical data. Please feel free to contact us for more details.

Poly(St-DVB) based weak base anion exchange resin

CodeTypeIronic formMass capacityVolume capacityMoistureBulk densitySpecific densityParticle sizeEffective diameterUniformity coefficientWhole beads after (attrition) osmotic attrition Max swelling rateColorRemarks
WBA-1Macroporous typeFree amine≥4.8mmol/g≥1.45mmol/ml48-58%0.65-0.72g/ml1.03-1.06g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
20%
White to light yellowWith superior mechanical and osmotic strength, good kinetic property and very high working capacity for deminerazation.
WBA-2≥4.8mmol/g≥1.45mmol/ml48-58%0.65-0.72g/ml1.03-1.06g/ml0.45-1.25mm
≥95%
≥0.5mm≤1.6≥90%OH→Cl
20%
White to light yellowWith superior mechanical and osmotic strength, good kinetic property and very high working capacity for deminerazation. For floating bed.
WBA-3≥4.8mmol/g≥1.45mmol/ml48-58%0.65-0.72g/ml1.03-1.06g/ml0.315-0.63mm
≥95%
0.35-0.5mm≤1.4≥90%OH→Cl
20%
White to light yellowWith superior mechanical and osmotic strength, good kinetic property and very high working capacity for deminerazation. For double-layer bed.
WBA-4≥4.8mmol/g≥1.40mmol/ml50-60%0.65-0.72g/ml1.03-1.06g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
25%
White to light yellowWith high resistance to organic fouling, this resin is widely used in demineralization and discoloration of starch sweetener syrup and other organic solutions.
WBA-5≥4.7mmol/g≥1.40mmol/ml50-60%0.65-0.72g/ml1.03-1.09g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
25%
White to light yellowWith high resistance to organic fouling, this resin is widely used in demineralization and discoloration of starch sweetener syrup and other organic solutions.
WBA-6≥4.8mmol/g≥1.5mmol/ml48-55%0.65-0.72g/ml1.03-1.06g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
20%
White to light yellowMainly used to remove acid and color from natural extracts of fermentation broth.
WBA-7≥4.8mmol/g≥1.6mmol/ml48-53%0.63-0.73g/ml1.03-1.09g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
20%
White to light yellowWith high capacity.
WBA-8≥4.5mmol/g≥1.2mmol/ml55-65%0.65-0.75g/ml1.04-1.08g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
25%
White to light yellowWith high oxidation resistance and high capacity.
WBA-9≥4.8mmol/g≥1.6mmol/ml48-55%0.65-0.72g/ml1.03-1.07g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
45%
Light yellow to greyWith only N(CH3)3 functional groups and no strong base, high capacity and excellent organic resistance.
WBA-10≥7.0mmol/g≥1.6mmol/ml60-70%0.65-0.72g/ml1.03-1.06g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
45%
Light yellow to greyMainly used in adsorption and purification of streptomycin and other aidehyde compounds.
WBA-11≥7.5mmol/g≥2.2mmol/ml55-65%0.65-0.72g/ml1.03-1.06g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
25%
Light yellow to greyWidely used in acid removal and heavy metal adsorptions.
WBA-12Bi-functional≥4.5mmol/g≥1.35mmol/ml55-65%0.65-0.75g/ml1.03-1.08g/ml0.6-1.5mm
≥95%
0.4-0.7mm≤1.6≥90%OH→Cl
20%
WhiteWith 20-30% strong base functional groups. It is of high gold adsorption capacity and easy to be regenerated.

Polyacrylate based weak base anion exchange resin

CodeTypeIronic formMass capacityVolume capacityMoistureBulk densitySpecific densityParticle sizeEffective diameterUniformity coefficientWhole beads after (attrition) osmotic attrition ColorRemarks
WBA-13Gel typeFree amine≥5.5mmol/g≥1.4mmol/ml55-65%0.65-0.75g/ml1.04-1.10g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%ColorlessHigh resistance to organic fouling. Mainly used in the recycling treatment of water containing organic substances.
Free amine≥5.0mmol/g≥1.6mmol/ml50-60%0.65-0.75g/ml1.02-1.12g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%ColorlessHigh resistance to organic fouling. Mainly used in the recycling treatment of water containing organic substances.
WBA-14
WBA-15Macroporous typeFree amine≥6.5mmol/g≥2.0mmol/ml48-58%0.65-0.75g/ml1.10-1.16g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowHigh capacity and excellent mechanical strength. Mainly used in food and pharmaceutical industries for the removal of sulfate radical, chloridion, bitrate radical, and adsorption and purification of citric acid and vitamin C
WBA-16Free amine≥6.5mmol/g≥2.2mmol/ml55-65%0.65-0.75g/ml1.04-1.10g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowHigh capacity and excellent mechanical strength. Mainly used in food and pharmaceutical industries for the removal of sulfate radical, chloridion, bitrate radical, and adsorption and purification of citric acid and vitamin C
WBA-17Free amine≥8.5mmol/g≥2.6mmol/ml50-60%0.65-0.75g/ml1.05-1.15g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowMainly used for L-lactic acid and other organic acid adsorption in fermentation industry.
WBA-18Free amine≥5.3mmol/g≥1.5mmol/ml55-65%0.65-0.75g/ml1.05-1.10g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowMainly used for citric acid production.
WBA-19Free amine≥7.0mmol/g≥2.2mmol/ml55-65%0.65-0.75g/ml1.03-1.12g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowWith high exchange capacity and high chemical stability, mainly used in hydrometallurgy to extract V and Mo. It also could be used in food and pharmaceutical industries to de-acidify.
WBA-20Free amine≥7.5mmol/g≥1.7mmol/ml62-72%0.65-0.75g/ml1.03-1.12g/ml0.315-1.25mm
≥95%
0.4-0.7mm≤1.6≥90%White to light yellowWith high exchange capacity and high chemical stability, mainly used in hydrometallurgy industry.

Epoxy based weak base anion exchange resin

CodeTypeIronic formMass capacityMoistureBulk densitySpecific densityParticle sizeEffective diameterUniformity coefficientMax swelling rateColorRemarks
WBA-21Gel typeFree amine≥9.5mmol/g75-85%0.63-0.73g/ml1.02-1.10g/ml0.315-2.0mm
≥95%
0.4-1.0mm≤2.0OH→Cl40%Light yellowWith high organic fouling resistance and very high color adsorption capacity. Widely used to remove acid colors in food and pharmaceutical industries.
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