Technical Information


Flastopon FS-18 is an efficient sequestering agent for calcium, magnesium, andheavy metal ion which retains its effective performance at high temperatures and also in the presence of high concentrations of electrolyte and alkali.
Typical properties  
Appearance:  Slightly Yellowish
Nature Organic phosphonic acid ester
Solubility in water Readily miscible in water
Ionity Anionic –Nonionic
Compatibility Compatible with anionic and non-ionic products, should not be used with cationic products



• To sequester calcium and magnesium impurities in a cotton knitted fabric and improve bleach whiteness. Add Flastopon FS-18 0.5 – 1,0 g/l to the normal bleaching recipe to achieve a marked improvement in whiteness and reproducibility.

To sequester calcium and magnesium impurities in hard water and in a cotton knitted fabric and eliminate precipitation problems experienced in dyeing .

Under the conditions where residual calcium and magnesium occur either in water or in the substrate resulting in dyestuff precipitation problems, addition of Flastopon FS-18 0.5 – 1,0 g/l to the reactive dye bath can eliminate problems of white precipitate on the fabric and lime soaps formed with addition of detergents.


Eliminates calcium and magnesium powdery.

precipitates or lime soap deposits on the textile goods and prevents build-up of insoluble scale on machinery.

Improves water absorbency, softness and winding properties of yarn.


According to our best knowledge and technical experiments, the above data is true and accurate. Regarding to variety of consumption procedures, it is recommended to evaluate the information before use.