238503

Sodium tripolyphosphate

technical grade, 85%

• Synonym(s): Pentasodium tripolyphosphate Anhydrous, STPP, Sodium triphosphate, Sodium triphosphate pentabasic, Sodium tripolyphosphate pentabasic
• Linear Formula: Na₅P₃O₁₀
• CAS Number: 7758-29-4
• Molecular Weight: 367.86
• EC Number: 231-838-7
• MDL number: MFCD00003514
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752508
• NACRES: NA.55

Properties

• grade: technical grade
• Quality Level: 100
• Assay: 85%
• form: powder
• pH: 9.5-10.3 (1 g/L)
• SMILES string: [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O
• InChI: 1S/5Na.H5O10P3/c;;;;;1-11(2,3)9-13(7,8)10-12(4,5)6/h;;;;;(H,7,8)(H2,1,2,3)(H2,4,5,6)/q5*+1;/p-5
• InChI key: HWGNBUXHKFFFIH-UHFFFAOYSA-I

Description

General description

Sodium tripolyphosphate (STPP) is widely employed as a deflocculant. The major applications of STPP as laundry detergents and cleansing agents. STPP provides benefits such as pH buffering, soil emulsification and hard water sequestration for effective surfactant performance.

Application

Sodium tripolyphosphate is used:

• As a corrosion inhibitor for steel.
• In the preparation of chitosan nanoparticles (CSNPs) by ionic gelation.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable