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Anionic polyacrylamide is the generic name for a group of very high molecular weight macromolecules produced by the free-radical polymerization of acrylamide and an anionically charged co-monomer, mainly the sodium salt of acrylic acid, sodium acrylate.
Anionic polyacrylamide has no systemic toxicity to aquatic organisms or microorganisms. The polymer is much too large to be absorbed into tissues and cells.
The benefits of anionic polyacrylamide:
1. Conventional erosion and sediment controls cannot affect
2. Preventing downstream damage from sediment and chemicals
3. It can be used with mulch made onsite from cleared materials
4. It requires little maintenance unlesss ediment deposits are heavy
5. It will not interfere with construction activity
6. Reduce dust.
The functional anionic groups do not interfere with the functioning of fish gills or daphnia respirators.The preparation of the test solutions at such concentrations requires high energy stirring for long periods of time, sometimes several hours. Therefore, it can be concluded that these harmful concentrations will not exist in the natural environment.
Low charge density polymers demonstrate even lower toxicity to aquatic and micro-organisms. The results of assays on anionic polyacrylamide are determined mainly by the viscosity of the test solution.
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