Nonionic Polyacrylamide (NPAM) — VIT Series
Número CAS: 9003-05-8
Nonionic polyacrylamide (NPAM) VIT Series are medium-to-high molecular weight flocculants manufactured by homopolymerisation of acrylamide with minimal hydrolysis (HD 2–7 mol%). The near-zero ionic charge makes NPAM effective in strongly acidic or high-electrolyte environments where anionic or cationic flocculants lose performance. Primary markets include mineral processing acidic thickeners, acidic wastewater treatment, soil stabilisation, and papermaking drainage. Solid powder (≥88% active), residual monomer ≤0.05%, MW 5–8 million Da.
Especificaciones Técnicas
| appearance | White to off-white granular powder |
| solid content | ≥ 88 wt% |
| molecular weight | 500 – 800 万 (5–8 million Da) |
| hydrolysis degree | 2 – 7 mol% |
| effective pH range | 2 – 10 |
| residual acrylamide monomer | ≤ 0.05 wt% |
| recommended dosing concentration | 0.1 – 0.2 wt% |
| dissolution time (0.1% solution, 25°C) | ≤ 60 min |
Aplicaciones
- Mineral processing: acid-leach circuit thickeners and clarifiers
- Acidic wastewater treatment (pH < 5) where ionic flocculants hydrolyse
- Phosphoric acid plant gypsum settling
- Paper and board machine wet-end drainage and retention
- Soil erosion control and slope stabilisation
- Coal washing: fine coal dewatering in acidic slurry circuits
Características Principales
- Near-zero ionicity (HD 2–7%) — performs in strong acid and high-salt environments
- 3 grades: VIT-2332 (5M, HD 2%), VIT-2335 (7M, HD 5%), VIT-2337 (8M, HD 7%)
- Broad pH range 2–10 — covers strongly acidic mineral-processing circuits
- Low residual monomer ≤0.05% — compatible with environmental discharge permits
- Complements APAM and CPAM in multi-stage treatment trains
Variantes de Grado y Referencia de Proveedor
Grados específicos disponibles de proveedores líderes del mercado chino. Las hojas técnicas y plazos varían por grado — solicite cotización para confirmar disponibilidad.
VIT-2332NPAM VIT-2332VIT
| HD | 2% |
| MW | 500万 |
VIT-2335NPAM VIT-2335VIT
| HD | 5% |
| MW | 700万 |
VIT-2337NPAM VIT-2337VIT
| HD | 7% |
| MW | 800万 |
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