Polysuccinimide (PSI)

Polysuccinimide (PSI)

Molecular Formula: (C₄H₃NO₂)ₙ

Molecular Weight: 10,000–50,000 g/mol (n ≈ 100–500)

Synonyms:
Polysuccinicimide, PSI Intermediate, Polyaspartic Acid Precursor

Product Overview

Polysuccinimide (PSI) is a high-purity intermediate used in the synthesis of Sodium Polyaspartate (PASP-Na). It is supplied as a fine beige to light brown powder and exhibits controlled, gradual hydrolysis in aqueous environments, converting slowly into polyaspartic acid. This sustained-release behaviour makes PSI particularly suitable for long-term applications, such as scale inhibition in industrial water systems, where extended performance is essential.

Key Features

• Controlled Hydrolysis:
  PSI undergoes slow hydrolysis in water, enabling a steady release of polyaspartic acid for prolonged efficacy.

• Environmentally Responsible:
  Fully biodegradable, with breakdown products that are safe for the environment.

• Versatile Performance:
  Combines scale inhibition, dispersion, and mild surface-active properties in one product.

• Chemical Versatility:
  Serves as a key intermediate for further functionalisation and synthesis of specialty chemicals.

Technical Specifications