<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Sodium tripolyphosphate STPP is used in laundry detergent as a detergent "builder". The paper presents the chemical method of obtaining "heavy", i.e. with higher bulk density granulated sodium tripolyphosphate. The bulk density of sodium tripolyphosphate was increased by preparing a mixture of the dried sodium phosphates, the recycled subgrain of STPP and water in specific proportions and calcining this mixture for 1 hour at 400°C and 550°C (to obtain a proper STPP form) in the chamber kiln. This method allows producing the granular sodium tripolyphosphate with high bulk density (1.04-1.07 kg/dm<sup>3</sup>) and a high content of Form I or Form II, respectively.</p></abstract>

Sodium tripolyphosphate STPP is used in laundry detergent as a detergent "builder". The paper presents the chemical method of obtaining "heavy", i.e. with higher bulk density granulated sodium tripolyphosphate. The bulk density of sodium tripolyphosphate was increased by preparing a mixture of the dried sodium phosphates, the recycled subgrain of STPP and water in specific proportions and calcining this mixture for 1 hour at 400°C and 550°C (to obtain a proper STPP form) in the chamber kiln. This method allows producing the granular sodium tripolyphosphate with high bulk density (1.04-1.07 kg/dm3) and a high content of Form I or Form II, respectively.

A chemical method of the production of "heavy" sodium tripolyphosphate with the high content of Form I or Form II

Institute of Inorganic Chemistry and Technology, Cracow University of Technology, ul. Warszawska 24, 31-155 Kraków, Poland

Polish Journal of Chemical Technology

Sodium tripolyphosphate STPP is used in laundry detergent as a detergent "builder". The paper presents the chemical method of obtaining "heavy", i.e. with...

A chemical method of the production of "heavy" sodium tripolyphosphate with the high content of Form I or Form II

Published Online: Jun 19, 2009

Page range: 13 - 20

DOI: https://doi.org/10.2478/v10026-009-0018-x

Keywords
sodium tripolyphosphate, high bulk density, granular product

This content is open access.

A chemical method of the production of "heavy" sodium tripolyphosphate with the high content of Form I or Form II

Published Online: Jun 19, 2009

Page range: 13 - 20

DOI: https://doi.org/10.2478/v10026-009-0018-x

Keywordssodium tripolyphosphate, high bulk density, granular product

This content is open access.

Keywords
sodium tripolyphosphate, high bulk density, granular product