Products Description of Sodium Polyacrylate CAS#9003-04-7
Sodium polyacrylate is a white, odorless, and tasteless powder with strong hygroscopic properties. It is a high-molecular-weight polymer containing both hydrophilic and hydrophobic groups. When dissolved in water, it gradually forms a highly viscous, transparent solution. The viscosity of a 0.5% aqueous solution is very high, mainly due to the ionic effect of numerous anionic groups in the molecular structure, which extend the polymer chains and significantly increase the apparent viscosity. Its viscosity is approximately 15–20 times higher than that of CMC and sodium alginate.
The viscosity of sodium polyacrylate is only slightly affected by heating, neutral salts, or organic acids, but it tends to increase under alkaline conditions. The compound is insoluble in organic solvents such as ethanol and remains thermally stable up to 300°C without decomposition. It also maintains stable viscosity during long-term storage and is resistant to spoilage.
As an electrolyte, its viscosity can be influenced by acids and metal ions, which may reduce viscosity. However, when exposed to divalent or higher-valent metal ions, the compound does not decompose.
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Parameters
| Density | 1.32 g/mL at 25 °C |
| Refractive index | n20/D 1.43 |
| Storage temp | 2-8°C |
| Form | powder |
| Specific Gravity | 1.23 |
| PH Range | 46182 |
| Odor | Odorless |
| PH | 46182 |
| Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
| Stability | Stable, but moisture sensitive. |
| InChI | InChI=1S/C3H4O2/c1-2-3(4)5/h2H,1H2,(H,4,5) |
| InChIKey | NIXOWILDQLNWCW-UHFFFAOYSA-N |
| SMILES | C(=O)(O)C=C |
| EPA Substance Registry System | Sodium polyacrylate (9003-04-7) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38-36 |
| Safety Statements | 26-36 |
| WGK Germany | 3 |
| RTECS | WD6826000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 39069090 |
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Product Application of Sodium Polyacrylate CAS#9003-04-7
Sodium polyacrylate is commonly used as a scale inhibitor and as a builder in detergent formulations, helping to improve cleaning performance and regulate water hardness. It also serves as an auxiliary agent in soap and detergent processing.
In addition, it functions as an absorbent material for water-based spills and as a water retention and slow-release agent.
Furthermore, sodium polyacrylate can act as a suspending agent, stabilizer, and emulsifier in various industrial and formulation applications.
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