Polyphosphoric Acid (Ppa)

Polyphosphoric Acid is used in organic synthesis for cyclizations and acylations. It is also used industrially as a dehydrating agent, catalyst, and oxidizing agent.
Specifications

Appearance: Colorless Viscous Clear Liquid
Phosphoric Acid H3PO4, % w/w: 115 Min
Arsenic as As, ppm: 100 Max
Sulphate as SO4, ppm: 100 Max
Iron as Fe, ppm: 20 Max
Nitrate as NO3, ppm: 5 Max
Total Heavy Metals as Pb, ppm: 20 Max
Color, ppm: 30 Max
Fluoride as F, ppm: 10 Max
Phosphate P2O5, % w/w: 83.30 Min
Gravity (at 20�°C): 2.015 Min
Packing

749.564 Lb (340 KG) drum, 4 drums per pallet
3527.36 lbs (1600 kg) IBC Tote
DOT Transportation

UN/NA: UN3264
Proper Shipping Name: Corrosive Liquid, Acidic, Inorganic, N.O.S. (Polyphosphoric Acids)
Hazard Class: 8
Packing Group: III

Tianyao is the biggest PPA producer in China with the capacity of 7000mt/a. We can supply the high quality polyphosphoric acid at different concentration in different drums or iso tank.
PPA105%, PPA115%, PPA116%, PPA117%

Usage: polyphosphate acid is not only a intermediate chemical products, but also an important chemical products, it is widely used in paints, pharmacy, spices, leather, flame retardant, detergent, skin care products and cosmetics
industries, such as being cyclizing agent in organic synthesis, acidulant and dehydrating agents etc. Moreover, polyphosphate acid can also be used as a substitute for orthophosphoric acid and analytical reagents etc.
Items(%) Specifications
115% 105% 95%
Color ¡¡ ¡¡ ¡Ü20
PPA ¡Ý115 ¡Ý105 ¡Ý95
P2O5 ¡Ý83.3 ¡Ý76.0 ¡Ý68.8
Chloride as Cl ¡¡ ¡¡ ¡Ü0.0005
SO4 ¡¡ ¡¡ ¡Ü0.005
Iron as Fe ¡¡ ¡¡ ¡Ü0.002
Arsenic as As ¡Ü0.005 ¡Ü0.005 ¡Ü0.0001
Heavy Metal as Pb ¡Ü0.001 ¡Ü0.001 ¡Ü0.0005
Fluoride as F ¡¡ ¡¡ ¡Ü0.001


in 330kg drum.

Molecular formula: Hn+2Pn03n+1
Molecular weight: 18+79.98n
CAS#:8017-16-1
Properties: PPA is a Colorless transparent or slightly light yellow, thick liquid, easy to deliquesce, non-crystalline, corrosive, can be miscible with water and hydrolyzed to orthophosphoric acid, specific gravity 2.1g/cm3.
Uses: Polyphosphoric acid is used to make lithium hexafluorophosphate electrolyte, and also used in drug synthesis, pigment synthesis, catalyst synthesis, carbon fiber production, inorganic flame retardants, etc. Fine chemical industry. Using the "one-step" production technology, the polymer content is much higher than that of the "two-step" production of polyphosphoric acid, with stable performance and good fluidity.
Packing: IBC barrel

Acidity of pyrophosphoric acid The chain and ring structures of pyrophosphoric acid, tetrametaphosphoric acid or other polyphosphoric acids are formed by dehydration condensation of orthophosphoric acid, and are all condensed acids. Generally, the acidity of condensed acids is greater than that of monoacids. This is because the volume of condensed acid radical ions is large, and the negative charge density on their surfaces is much lower, so condensed acids are easy to dissociate protons. The greater the degree of condensation of similar oxygen-containing acids, the stronger the acidity. Uses: moisture retainer, quality improver, pH regulator, metal chelator. For toxicity, see industrial phosphoric acid. Chemical properties: colorless, transparent, crystalline solid or yellow syrupy liquid, highly hygroscopic. Solid pyrophosphoric acid is formed by the natural crystallization of a polyphosphoric acid mixture with a P2O5 content of 79.8%±0.2%. Soluble in ethanol and ether. When heated above the melting point, it decomposes into liquid acids containing orthophosphoric acid, pyrophosphoric acid, trimetaphosphoric acid, polymetaphosphoric acid, etc. Crystalline pyrophosphoric acid does not decompose much in ice water, but decomposes at high temperatures, and the amount of orthophosphoric acid increases. The general solid crystal is type I pyrophosphate (melting point 54.3). Type I crystals are heated at about 50 for several hours in a closed tube and then become type II (melting point 71.5). This product is stable at room temperature. Uses: used as catalyst, concealing agent, metal refining, stabilizer for organic peroxides. It is also used to adjust the Ph value of the electroplating solution in the copper electroplating process.