Weak base anion exchange resins refer to a type of ion exchange resin with weakly basic groups, such as primary amine groups (also known as primary amine groups) -NH2, secondary amine groups (secondary amine groups) -NHR, or tertiary amine groups (tertiary amine groups) Base)-NR2.
They can dissociate from OH- in water and become weakly alkaline. Due to poor dissociation, this resin can only adsorb other anions in the solution under neutral or acidic conditions (such as pH1-9).
The weakly basic anion exchange resin can be regenerated with Na2CO3 and NH4OH.
| Acrylic Acid Series Gel And Macroporous Weak Base Anion Exchange Resin | |||||||||||
| Sanford | Functional Groups | Ionic form | Volume exchange capacity （mmol/ml） | (0.315-1.25mm) Particle size range % |
Moisture content % | Bulk density （g/ml） |
Reversible swelling % | Temp limit ℃ | PH range | Appearance | Applications |
| 312 | -N(R2)2 | Free Base | ≥1.6 | ≥95 | 56~63 | 0.66~0.74 | OH→Cl ≤28 |
OH ≤100 Cl ≤40 |
1-10 | Pale yellow opaque globular particles | High organic matter, high salt content of water in the preparation of pure water, biochemical pharmaceutical. |
| D311 | -NH2 | ≥2.2 | ≥95 | 55~65 | 0.70~0.80 | OH→Cl ≤25 |
OH ≤100 Cl ≤40 |
1-9 | Creamy white to light yellow opacity spherical particles | It is mainly used for drug extraction, acid removal and decolorization of sugar solution, water treatment and citric acid extraction. | |
| D315 | -NH2 | ≥2.0 | ≥95 | 52~62 | 0.70~0.80 | OH→Cl ≤25 |
OH ≤100 Cl ≤40 |
1-9 | Mainly used in drug extraction,Biological fermentation liquid decolorization, sugar liquid decolorization,Citric acid, lactic acid refining, water treatment applications. | ||
| D370 | -N(CH3)2 | ≥1.2 | ≥95 | 50~60 | 0.66~0.71 | OH→Cl 15-20 |
OH ≤100 Cl ≤40 |
1-9 | Water treatment, electroplating containing chromium wastewater treatment, good pollution resistance. | ||
| D371 | -N(CH3)2 | ≥1.4 | ≥95 | 50~60 | 0.65~0.75 | OH→Cl 8-13 |
OH ≤100 Cl ≤40 |
1-9 | |||
| D390 | -NH2 | ≥1.2 | ≥95 | 60~65 | 0.70~0.75 | OH→Cl 20-25 |
OH ≤100 Cl ≤40 |
1-9 Na+ |
Pharmaceutical industry, antibiotic extraction and decolorization. | ||
| D396 | -NH2 | ≥1.2 | ≥95 | 60~70 | 0.70~0.80 | OH→Cl 20-25 |
OH ≤100 Cl ≤40 |
1-9 Na+ |
Pale yellow to yellow opaque globular particles | ||
| D392 | -NH2 | ≥1.4 | ≥95 | 53~58 | 0.67~0.73 | OH→Cl 20-25 |
OH ≤100 Cl ≤40 |
1-9 | |||
| D380 | -NH2 | Streptomycin adsorption ≥200,000 units/ml |
≥95 | 70~73 | 0.65~0.70 | OH→Cl 40-60 |
OH ≤100 Cl ≤40 |
1-9 | Streptomycin extraction, citric acid and other organic acid decolorization. | ||
| D382 | -NHCH3 | ≥1.2 | ≥95 | 40~50 | 0.66~0.70 | OH→Cl 17-19 |
OH ≤100 Cl ≤40 |
1-7 | Weak acid refining, strong separation of weak acid. | ||
| D941 | -NH2 | ≥2.0 | ≥95 | 55~65 | 0.70~0.80 | OH→Cl ≤25 |
OH ≤100 Cl ≤40 |
1-9 | Creamy white to light yellow opacity spherical particles | It is mainly used for decolorization and purification of sugar and other food industry, stevia, ginseng saponin, panax notoginseng saponin, antibiotics and other natural medicines. | |
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