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Sodium tripolyphosphate/stpp

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  Post Date: Dec 30,2009
  Expiry Date: Jan 13,2010
  Detailed Description: Cas No. :7758-29-4
Sodium tripolyphosphate/stpp
Sodium tripolyphosphate /STPP 90%/94%/96%
Molecular Formula:Na5P3O10
CAS :7758-29-4
Appearance :white powder
Specification : Sodium tripolyphosphate 90%
Item Specification
Content ≥ 90%
Appearance White crystal powder
Odor Odorless
Melting point 622℃
Solubility 50g/100g in water(@25℃)

Specification : Sodium tripolyphosphate 94%
Item Specification
Content ≥ 94
P2O5 %≥ 57
Whiteness %≥ 88
Insoluble matter %≤ 0.1
Fe %≤ 70ppm
Size residue on 1.00 test sieve≤ 5.0
Loss on lgnition(500) ≤ 1.0
PH value(1% solution ) 9.2-10.0
Bulk density(g/cm3) 0.65-0.99
Phase 10-30

Specification : Sodium tripolyphosphate 96%
Item Specification
Content ≥ 96
P2O5 %≥ 57
Whiteness %≤ 90
Water Insoluble matter %≤ 0.1
Fe %≤ 0.007
Heavy metal as Pb ≤ 0.001
PH value(1% solution ) 9.2-10.0

Properties : white powder , surface density:0.35-0.9g/cm3,melting point :622, free soluble in water, aqueous solution appears acid , it is a kind of inorganic surface active agent .
Package :in 25kg or 50kg or 1000kg net wpp/pe bags .
Application : used as one of the main auxilaries for synthetic detergent , synergist for soap;water softener, tanning agent for leather making , auxiliary for dyeing; as an oil contamination resistance agent in paper production . in foodstuff industry is used as quality improver in the process of canned food, fruit juice drinks , food stuffs from milk or soybeans . it may tender the meat in canned ham and soften skin of horse bean in canned horse bean . it may also serves as a softener or densifier in foodstuff industry .




  Company: Shijiazhuang Dexiang Chemicals Co., Ltd            
  Contact: linda
  Tel: 311-66688682
  Fax: 311-66688681
  Email: linda@sjzdexiang.com
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