Potassium tripolyphosphate
Potassium Tripolyphosphate (K5P3O10) is TongVo's hot sale products, which is used as a builder for soaps, detergents and especially liquid cleaning formulations.
Potassium tripolyphosphate
Title: Potassium tripolyphosphate
Synonyms: pentapotassium triphosphate; potassium triphosphate; KTPP
Formula: K5P3O10,
Molecular: 301.03
CAS #: 13845-36-8, EC #: 237-574-9
Standard(s): FCC V, Q/5749-2008
Grade: Food grade, Technical grade, Low iron

Specifications
Specifications | Low iron | Technical grade | Food grade | |
---|---|---|---|---|
Packing: | 25Kgs/bag, in woven or kraft paper bags with inner bag , or as customer's requirements. | |||
Appearance | white powder or granular | white powder or granular | white powder or granular | |
Assay (K5P3O10) % | ≥95 |
≥95 | ≥85 | |
P2O5 % | ≥46.5 | ≥46.5 | ≥46 | |
K2O % | ≥52 approx | ≥52 approx | ≥49 | |
Fe % | ≤0.002 |
≤0.01 | / | |
As % | ≤0.0005 | ≤0.001 | ≤0.0003 | |
Pb % | / | / | ≤0.0002 | |
Heavy metal (as Pb) % | ≤0.001 | ≤0.005 | / | |
F % | / | / | ≤0.001 | |
Cl % | ≤0.01 | ≤0.1 | / | |
pH (1% sol.) | 9.2~10.1 | 9.2~10.1 | 9.2~10.1 | |
Water insoluble % | ≤0.1 | ≤1.0 | ≤2.0 | |
Loss on ignition % | ≤0.4 | ≤0.4 | ≤0.4 |
Properties
Potassium Tripolyphosphate (KTPP) is a hygroscopic white material, granular, soluble in water, which gives moderately alkaline solutions. Potassium Tripolyphosphate is sequestering agent (excellent sequestrant of calcium, magnesium and iron in food products). Potassium Tripolyphosphate is highly soluble in aqueous solutions with excellent dispersion properties. Potassium Tripolyphosphate is easy to dissolve in water with solubility of 178g, 194g, and 212g in 100 mL of water at 10°C, 25°C, and 50°C respectively.
Potassium Tripolyphosphate has excellent chelating ability and can form stable chelates with Ca2+ and Mg2+ in hard water so as to soften hard water, increase cleaning ability, and remove dirt. The white precipitate formed from adding 13mL of 1% calcium nitrate solution into 100 mL of 1% potassium pyrophosphate solution can be rapidly chelated to produce a clear solution.
Applications
Potassium Tripolyphosphate can form a protective film on the surface of iron, lead, zine, and other metals so as to prevent surface corroding. P2O74- has a strong dispersion ability to disperse finely distributed solid particles so that these fine and trace materials can mix evenly. Potassium Tripolyphosphate has stable pH buffering ability and keep solution pH value unchanged for a long time. Potassium Tripolyphosphate is used as a builder for soaps, detergents and especially liquid cleaning formulations.
Storage & handling
Keep in cool dry place.
Air transportation: arranged as ordinary goods.
Harzards Identification & Classifications: N/A
Shelf life
12 months.
Related products
Support: Potassium tripolyphosphate technical datasheet (TDS), Potassium tripolyphosphate material safety datasheet (MSDS).
Remarks: Potassium Tripolyphosphate (KTPP) is TongVo's hot sale products, which is used as a builder for soaps, detergents and especially liquid cleaning formulations.