CAS 7601-54-9|Na₃PO₄

Trisodium Phosphate (TSP)

Strongly alkaline phosphate salt — boiler scale control, heavy-duty industrial degreaser, and pH buffer for water treatment and food processing equipment.

pH (1% soln)

11.5–12.0

Top Grade

Technical / FCC

DOT Status

Not regulated

Packaging

Bags / Super Sacks / Drums

Physical Properties

Molecular FormulaNa₃PO₄
Molecular Weight163.94 g/mol (anhydrous)
CAS Number7601-54-9
AppearanceWhite granular powder or crystals
Melting Point1583 °C (anhydrous)
Density2.536 g/cm³ (anhydrous)
Solubility in Water14.5 g/100 mL at 20 °C
pH (1% soln)11.5–12.0 (strongly alkaline)
Flash PointNon-flammable
HygroscopicityModerate — store in sealed containers
Hydrate FormDodecahydrate (Na₃PO₄·12H₂O) — MW 380.12
StabilityStable under normal conditions
Trisodium Phosphate (TSP)3 Na+PO₄3−POOOONa₃PO₄ | MW 163.94 g/mol | CAS 7601-54-9

Grades & Packaging

Technical GradeFCC/Food GradeAnhydrousDodecahydrate (Na₃PO₄·12H₂O)
50-lb Bags2000-lb Super Sacks55-gal Drums

Industrial Applications

Boiler Water Treatment

Controls scale and corrosion in steam boilers. Reacts with calcium and magnesium hardness to form non-adherent sludge. Maintains alkaline pH to prevent corrosion.

Industrial Cleaning & Degreasing

Heavy-duty alkaline cleaner and degreaser for metal surfaces, concrete, and industrial equipment. Saponifies fats and oils for easy removal.

Food Processing Equipment

FCC-grade TSP approved for cleaning food-contact surfaces. Effective against protein soils, fats, and mineral deposits in dairy and beverage plants.

Water Treatment & pH Control

pH buffer and corrosion inhibitor in municipal water treatment. Sequestrant for calcium and magnesium in process water systems.

Textile & Leather Processing

Scouring agent and pH regulator in textile processing. Removes natural waxes, oils, and sizing agents from raw fibers.

Concrete & Masonry Cleaning

Removes efflorescence, grease, and stains from concrete, brick, and masonry surfaces before painting or sealing.

Safety & Regulatory

NFPA Health2 — Moderate hazard (alkaline)
NFPA Flammability0 — Minimal hazard
NFPA Reactivity0 — Stable
OSHA PEL (TWA)No established PEL
ACGIH TLV (TWA)Not established
DOT Hazard ClassNot regulated
Skin/Eye HazardCorrosive to skin and eyes — use PPE
Aquatic ToxicityModerate — can cause eutrophication in waterways

Strongly Alkaline — Handle with Care

TSP solutions are strongly alkaline (pH 11.5–12). Use chemical-resistant gloves and eye protection. Avoid contact with skin and eyes. SDS available upon request.

Request a Quote for Trisodium Phosphate

Technical and FCC grades in bags, super sacks, and drums across Texas and the Gulf Coast.

Get a Quote

TSP vs. Alternatives

Trisodium phosphate (TSP) is a strong alkaline cleaner and phosphate source used in water treatment, cleaning, and industrial applications.

AttributeTSPSodium Carbonate (Soda Ash)Sodium Hydroxide
pH in Solution~12 at 1% — strongly alkaline~11.5 at 1%~13 at 1%
Phosphate Content57% P2O5 equivalentNo phosphateNo phosphate
Cleaning PowerExcellent — emulsifies grease, removes stainsGood — milder than TSPExcellent — but more hazardous
Physical FormWhite crystalline solid — easy to handleWhite powder or granulesFlakes, pellets, or 50% solution
Environmental ConcernPhosphate discharge limits applyNo phosphate concernNo phosphate concern

Industries We Supply TSP To

Industrial Cleaning & Degreasing

TSP is a heavy-duty cleaner for removing grease, oil, and grime from industrial equipment, concrete floors, and metal surfaces before painting or coating.

TSP supply in Houston, TX

Boiler Water Treatment

Sodium phosphate compounds including TSP are used for boiler water pH control, scale prevention, and sludge conditioning in steam generation systems.

TSP supply in Beaumont, TX

Food Processing

Food-grade TSP used as a pH adjuster, emulsifier, and antimicrobial agent in poultry processing and as a leavening agent in baked goods.

TSP supply in Dallas, TX

Construction & Surface Prep

Used to clean and etch concrete, masonry, and wood surfaces before painting, removing efflorescence, mildew stains, and surface contaminants.

TSP supply in Fort Worth, TX