Trisodium Phosphate (TSP)
Product Overview:
Identification of Substance: trisodium orthophosphate dodecahydrate
CAS #: 10101-89-0
Trisodium phosphate (TSP) is a strong alkaline cleaning compound used across cleaning, water treatment, and more. It is commonly employed as a heavy-duty cleaning and degreasing agent for surfaces prior to painting, effectively removing grease, wax, and old paint residue to improve adhesion of new coatings. Additionally, it serves as a boiler and industrial water treatment additive for scale control, helping maintain proper alkalinity in steam systems. Furthermore, it finds applications in general cleaning product manufacturing requiring a strong alkaline builder.
Relevant identified uses:
Raw material
Industrial uses
Uses advised against:
Do not use for private purposes (household)
Documentation:
Technical Information:
Appearance
White or colorless granular crystal
Content (Na₃PO₄)
≥ 98.0 %
Phosphorus Pentoxide (P₂O₅)
≥ 39.5 %
Sodium Oxide (as Na₂O)
36.0 – 40.0 %
Sulphate
≤ 0.25 %
Heavy Metal (Pb)
≤ 0.001 %
Arsenic (As)
≤ 0.0003 %
Fluoride (F)
≤ 0.005 %
Water Insoluble
≤ 0.20 %
pH
11.5 – 12.5
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