Sodium hexametaphosphate is a commonly used retarder in polycarboxylates. It is an admixture that can delay the cement hydration reaction, thereby extending the setting time of concrete, allowing the freshly mixed concrete to maintain plasticity for a longer period of time, facilitating pouring and improving construction efficiency, while not causing adverse effects on the various properties of concrete in the later stages.
Used as corrosion inhibitor, flotation agent, dispersant, high temperature binder, dyeing auxiliary, metal surface treatment, rust inhibitor, detergent auxiliary, cement hardening accelerator.