Complex Sodium Disilicate (  CAS No:13870-28-5 ) is the best phosphorus-free detergent builders, the best replacement of Sodium Tripolyphosphate (STPP)

Full Name Of CSDS: Complex Sodium Disilicate 
Molecular Structure: Na2O.2SiO2 

                                                                                     [Specification]: 

Packing: 25kgs in plastic woven bag with inner plastic film bag 
  One container load: 15.5 tons in 20ft container ; 26mt/1x40ft container;

[APPLICATION]:

Complex Sodium Disilicate is used as subsititute of STPP in detergent powder making such as concentrate detergent powder,
ordinary detergent powder,
Phosphorus-free washing powder,
Low phosphorus detergent powder,
Metal-washing powder.

All these detergent powders can be washed by hand or washing machine.
It is mainly applied in high-tower spray dried technology.

                                   [COMPARISON WITH OTHER DETERGENT BUILDERS]:
Chart 1: comparison of major detergent builders 

Chart 2: phosphorus free builder function comparison 

[Conclusion]:
Complex Sodium Disilicate is the best phosphorus-free detergent builders, the function is almost same as STPP.It is the best replacement of STPP at present.

Complex Sodium Disilicate is completely eco-friendly while STPP caused serious pollution. 
Complex Sodium Disilicate has an excellent solubility in water, even cold water, better than STPP. 
The price of Complex Sodium Disilicate is much lower than that of STPP 
Complex Sodium Disilicate can be used same as STPP in producing process, without any change in equipment. 

Complex Sodium Disilicate is the top cost performance non-phosphorus detergent which is widely used in leather washing and metal cleaning.It is based on national patent (the patent No:97107704.5) with exceeded capability.