Tetra Potassium Pyrophosphate, TKPP, metal surface cleaning agent
Specifications
Tetra Potassium Pyrophosphate
Molecular Formula: K4P2O7
Molecular weight: 330.34
Standard executed: HG/T3591-1999
Tetra Potassium Pyrophosphate
Packing: 25kg woven bag
Volume/ 20FCL: 22MT
Payment term :L/C at sight or T/T (30% T/T in advance, 70% against the copy of B/L).
Properties
Anhydrous tetra potassium phosphate is in white powder. Relative density 2.3534 and melting point 1109°C; It is apt to absorb humidity in the open air to deliquescent; Soluble in water but insoluble in ethanol, and at 25 ,its solubility in water is 187g/100g water; It can chelate with alkaline metals ions or heavy metal ions.
Uses :
It mainly applied to electroplating without cyanate, industrial or household detergents; It can used as a buffering reagent as well as stabilizer for hydrogen peroxide; It can also be used as dispersion agent for ceramic, clay, latex and pigments etc.
NO |
INDEXES |
FOOD GRADE |
TECH GRADE |
1 |
Appearance |
White powder or lumps
|
2 |
Assay% ≥ |
98.0 |
98.0-99.0 |
3 |
Iron(Fe) % ≤ |
0.005 |
0.01 |
4 |
Insoluble in water % ≤ |
0.10 |
0.20 |
5 |
Heavy Metals(as Pb)% ≤ |
0.001 |
0.003 |
6 |
Arsenic(As)% ≤ |
0.003 |
0.008 |
7 |
PH Value |
10.0-10.7 |
10.0-10.7 |
8 |
Ortho Phosphate |
pass |
|
Water-soluble, colorless crystals; dehydrates below 300.C, melts at 1090.C; used in tin plating, china-clay purification, dyeing, oil-drilling muds, and synthetic rubber production. Also known as normal potassium pyrophosphate, tetrapotassium pyrophosphate.
Potassium pyrophosphate has excellent chelating capability. It can form stable chelates with Ca2+ and Mg2+ in hard water to soften hard water, to increase washing capability, to remove dirt, and to form a layer of protection film on metal (like iron and other metals) surface preventing surface corrosion. P2O74- has strong dispersion capability to micro-dispersed solids, enabling homogenous mixture of tiny and fine matters. Its stable pH buffer capability maintains long-term solution pH value. Product is easy to dissolve in water, its solubility is 187 g/100mL at 25.C.
Tetrapotassium Pyrophosphate is mainly used in plating without cyanide and bleaching leather products as stabilizer. Under two special conditions, potassium pyrophosphate must be utilized: first is heavy - dirt deterging in controlling foam; second is cleaning metal surface. It is also adopted in detergent industry. Our Potassium Pyrophosphate complies with International Quality Standards and their quality and durability are fully guaranteed.
Factory pictures:
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