Sodium tripolyphosphate

Description

CAS: 7758-29-4 | Na5O10P3 | 367.86 g/mol

Sodium tripolyphosphate is used in water softening, heavy-duty fabric washing, automatic dish washing, drilling fluid cleaning and liquid cattle feed supplements. It is also used as a peptizing, emulsifying, dispersing agent and as a hydrogen peroxide solution stabilizer. It acts as a preservative for seafood, meats, poultry, and animal feeds. It finds application as a polyanion crosslinker in polysaccharide based drug delivery. Further, it is used as a sealant for leaking farm ponds and a calcium and magnesium chelating agent. In addition to this, it is used in ceramics, leather tanning, flame retardants, paper pulping, paper coatings, textile processing, ore flotation, anticorrosion pigments and rubber production.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications

Chemical Identifiers

• CAS: 7758-29-4
• Molecular Formula: Na5O10P3
• Molecular Weight (g/mol): 367.86
• MDL Number: MFCD00003514
• InChI Key: HWGNBUXHKFFFIH-UHFFFAOYSA-I
• Synonym: sodium tripolyphosphate, sodium triphosphate, pentasodium triphosphate, stpp, thermphos, armofos, polygon, tripoly, rhodiaphos lv, thermphos n
• PubChem CID: 24455
• IUPAC Name: pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate
• SMILES: [O-]P(=O)([O-])OP(=O)([O-])OP(=O)([O-])[O-].[Na+].[Na+].[Na+].[Na+].[Na+]

• Melting Point: 622°C
• Color: White
• Physical Form: Granules
• Quantity: 500 g
• Merck Index: 14,8697
• Solubility Information: Soluble in water; Slightly soluble in methanol; Insoluble in diethyl ether and n-octanol.
• Formula Weight: 367.91
• Odor: Odorless
• Sensitivity: Hygroscopic
• Chemical Name or Material: Sodium tripolyphosphate

Safety and Handling

Hazard Category	Warning
Hazard Statement	GHS H Statement H315-H319-H335 Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.
Precautionary Statement	GHS P Statement P261-P280-P305+P351+P338-P304+P340-P405-P501a Avoid breathing dust/fume/gas/mist/vapors/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.
EINECSNumber	231-838-7
RTECSNumber	YK4570000
TSCA	Yes
Recommended Storage	Ambient temperatures

SDS

RUO – Research Use Only