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

Code	Type	Ironic form	Mass capacity	Volume capacity	Moisture	Bulk density	Specific density	Particle size	Effective diameter	Uniformity coefficient	Whole beads after (attrition) osmotic attrition	Max swelling rate	Color	Remarks
WBA-1	Macroporous type	Free amine	≥4.8mmol/g	≥1.45mmol/ml	48-58%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 20%	White to light yellow	With superior mechanical and osmotic strength, good kinetic property and very high working capacity for deminerazation.
WBA-2			≥4.8mmol/g	≥1.45mmol/ml	48-58%	0.65-0.72g/ml	1.03-1.06g/ml	0.45-1.25mm ≥95%	≥0.5mm	≤1.6	≥90%	OH→Cl 20%	White to light yellow	With 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/ml	48-58%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-0.63mm ≥95%	0.35-0.5mm	≤1.4	≥90%	OH→Cl 20%	White to light yellow	With 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/ml	50-60%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 25%	White to light yellow	With 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/ml	50-60%	0.65-0.72g/ml	1.03-1.09g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 25%	White to light yellow	With 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/ml	48-55%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 20%	White to light yellow	Mainly used to remove acid and color from natural extracts of fermentation broth.
WBA-7			≥4.8mmol/g	≥1.6mmol/ml	48-53%	0.63-0.73g/ml	1.03-1.09g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 20%	White to light yellow	With high capacity.
WBA-8			≥4.5mmol/g	≥1.2mmol/ml	55-65%	0.65-0.75g/ml	1.04-1.08g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 25%	White to light yellow	With high oxidation resistance and high capacity.
WBA-9			≥4.8mmol/g	≥1.6mmol/ml	48-55%	0.65-0.72g/ml	1.03-1.07g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 45%	Light yellow to grey	With only N(CH₃)₃ functional groups and no strong base, high capacity and excellent organic resistance.
WBA-10			≥7.0mmol/g	≥1.6mmol/ml	60-70%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 45%	Light yellow to grey	Mainly used in adsorption and purification of streptomycin and other aidehyde compounds.
WBA-11			≥7.5mmol/g	≥2.2mmol/ml	55-65%	0.65-0.72g/ml	1.03-1.06g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 25%	Light yellow to grey	Widely used in acid removal and heavy metal adsorptions.
WBA-12		Bi-functional	≥4.5mmol/g	≥1.35mmol/ml	55-65%	0.65-0.75g/ml	1.03-1.08g/ml	0.6-1.5mm ≥95%	0.4-0.7mm	≤1.6	≥90%	OH→Cl 20%	White	With 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

Code	Type	Ironic form	Mass capacity	Volume capacity	Moisture	Bulk density	Specific density	Particle size	Effective diameter	Uniformity coefficient	Whole beads after (attrition) osmotic attrition	Color	Remarks
WBA-13	Gel type	Free amine	≥5.5mmol/g	≥1.4mmol/ml	55-65%	0.65-0.75g/ml	1.04-1.10g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	Colorless	High resistance to organic fouling. Mainly used in the recycling treatment of water containing organic substances.
WBA-13		Free amine	≥5.0mmol/g	≥1.6mmol/ml	50-60%	0.65-0.75g/ml	1.02-1.12g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	Colorless	High resistance to organic fouling. Mainly used in the recycling treatment of water containing organic substances.
WBA-14		Free amine	≥5.0mmol/g	≥1.6mmol/ml	50-60%	0.65-0.75g/ml	1.02-1.12g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	Colorless
WBA-15	Macroporous type	Free amine	≥6.5mmol/g	≥2.0mmol/ml	48-58%	0.65-0.75g/ml	1.10-1.16g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	High 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-16		Free amine	≥6.5mmol/g	≥2.2mmol/ml	55-65%	0.65-0.75g/ml	1.04-1.10g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	High 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-17		Free amine	≥8.5mmol/g	≥2.6mmol/ml	50-60%	0.65-0.75g/ml	1.05-1.15g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	Mainly used for L-lactic acid and other organic acid adsorption in fermentation industry.
WBA-18		Free amine	≥5.3mmol/g	≥1.5mmol/ml	55-65%	0.65-0.75g/ml	1.05-1.10g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	Mainly used for citric acid production.
WBA-19		Free amine	≥7.0mmol/g	≥2.2mmol/ml	55-65%	0.65-0.75g/ml	1.03-1.12g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	With 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-20		Free amine	≥7.5mmol/g	≥1.7mmol/ml	62-72%	0.65-0.75g/ml	1.03-1.12g/ml	0.315-1.25mm ≥95%	0.4-0.7mm	≤1.6	≥90%	White to light yellow	With high exchange capacity and high chemical stability, mainly used in hydrometallurgy industry.

Epoxy based weak base anion exchange resin

Code	Type	Ironic form	Mass capacity	Moisture	Bulk density	Specific density	Particle size	Effective diameter	Uniformity coefficient	Max swelling rate	Color	Remarks
WBA-21	Gel type	Free amine	≥9.5mmol/g	75-85%	0.63-0.73g/ml	1.02-1.10g/ml	0.315-2.0mm ≥95%	0.4-1.0mm	≤2.0	OH→Cl40%	Light yellow	With high organic fouling resistance and very high color adsorption capacity. Widely used to remove acid colors in food and pharmaceutical industries.