Ammonium Polyacrylate Ceramic Deflocculant
CAS Number: 9003-04-7
Ammonium polyacrylate (APA) is the ammonium-neutralized form of polyacrylic acid, used as a premium dispersant for alumina and other technical oxide ceramic slips. It provides excellent steric stabilization without introducing sodium ions, making it ideal for applications requiring high purity and low alkali contamination such as electronic substrates and MLCC green sheets.
Technical Specifications
| appearance | Colorless to pale yellow aqueous solution |
| purity (%) | ≥97 |
| pH (as-supplied) | 7.5–9.5 |
| solid content (%) | 25–40 |
| molecular weight (g/mol) | 1200–8000 |
Applications
- Deflocculant for high-purity alumina tape casting
- Dispersant in MLCC and electronic ceramic slurries
- Deflocculant for alumina and YSZ spray dried powders
- Dispersant in aqueous alumina injection molding
- Stabilizer for colloidal ceramic nanoparticle suspensions
Key Features
- Sodium-free formulation prevents alkali contamination in electronic ceramics
- Superior dispersing efficiency for sub-micron alumina powders
- Ammonium counter-ion decomposes cleanly during binder burnout
- Enables high solids loading (>70 wt%) with excellent flow
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CAS Number
9003-04-7
Category
Ceramic / Glass AdditivesAvailability
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