Sodium Phosphate Tribasic, Dodecahydrate, Crystal. White, free-flowing, granular or powder.
Formula: Na3PO4.12H2O.1/4 NaOH
Synonyms: Sodium phosphate, tribasic; Sodium orthophosphate; Sodium phosphate; Trisodium orthophosphate; Phosphoric acid, trisodium salt; Sodium phosphate
Uses: Heavy duty cleaner; boiler water compounds; detergent; metal cleaner; textiles; manufacture of paper; laundering; tanning; photographic developers; paint removers; industrial cleaners, power washing.
The major use for trisodium phosphate is in cleaning agents. In combination with surfactants, TSP is an excellent agent for cleaning everything from laundry to concrete driveways. TSP is commonly used after cleaning with mineral spirits in order to remove hydrocarbon residues. TSP may be used with household chlorine bleach in the same solution without hazardous reactions. This mixture is particularly good for removing mildew. TSP is also used as a flux for use in hard soldering joints in medical grade copper plumbing. The flux is applied as a concentrated water solution and dissolves copper oxides at the temperature used in copper brazing. Residues are fully water soluble and can be rinsed out of plumbing before it is put in service. TSP can be used in ceramic production to lower the flow point of glazes. Another use is the cleaning, degreasing and deglossing of walls prior to painting.
Certified to NSF/ANSI Standard by NSF International Max use 41 mg/l.
Assay, Ignited basis: >90%
P2O5: 18.5 - 21.0%
Alkalinity Weight: 18.0 - 20.5%
Loss On Ignition: 45 - 57%
Thru a USS 10 Sieve: 100%
Thru a USS 100 Sieve: < 10%
Visual Appearance: White Granules