Polyphosphoric acid

• Category :

  Inorganic chemicals

• Synonyms :

  Polyphosphoric acids;Superphosphoric Acid;PolyphosphoricacidPOviscousliq;Tetraphosphoric acid;PPA;

• CAS NO :

  8017-16-1

• EC NO :

  232-417-0

• Molecular Formula :

  (H)_n+2·(P)n·(O)_3n+1

• Molecular Weight :

  337.93

• Main Specifications :

• Product description :

  1.Polyphosphoric acid: with PPA as short name 

  2.Representative formula: H₆P₄O₁₃

  3.Molecular weight: 337.93

  4. Classification of hazardous materials: GB8.1-81505

  5.Uses: as cyclizing agent and acylating agent in organic synthesis; analytical reagent, substitute of Orthophosphoric Acid.

  6.Properties: Clear colorless viscous liquid, deliquescent, soluble in water with hydrolysis to phosphoric acid. Specific gravity 2.1g/CM³.

  7.Hazards Identification: Generally non-flammable, but may reacts vigorously with H foaming agent and cause fire. Low corrosive.

  8.Fire fighting measures: Wear acid proof protective gear. Extinguish fire with water. First aid measures: Eye: Flush eyes with plenty of water. Get medical aid. Skin: Flush skin with plenty of water. Get medical aid. Ingestion: Give water. Get medical aid. Packaging: Plastic barrel or glass bottle. Label: Corrosive

  9.Storage & Handling: 
  Corrosive matter. Packing method: II. Kept in plastic drum or plastic bottle with wood box outside, with non-flammable materials as lining. Storage & Handling: Store in a cool and dry place, keep away from alkali, toxic or corrosive substances Handle with care, Wear acid proof protective appliance. Leakage: Wear gas masks and gloves. Neutralize the spills with sodium carbonate solution.

  10.Shelf period: 60 days from May to September;90 day from October to April.

  11.Specifications & Quality index:

  Item	Index
  	Industry Grade	Food grade
  Assay	≥115%	≥116%
  Assay (P2O5)%	≥84%	≥84%
  Sulphate	0.01	0.002
  Viscosity(centipoise)	35000	35000
  Chroma (Hazen)	50	20
  Heavy metals (Pb)%	≤0.01	≤0.003
  Fe %	≤0.01	≤0.003
  As %	≤0.01	≤0.005

  12.Applications: 
  Polyphosphoric acid is widely used in medicine, spices, leather and chemical industry as the cyclizing agent, acidulant and dehydrant in organic synthesis, also can be used as the substitute of Orthophosphoric Acid.

  Packing form	Packing weight (net weight) (or following your demands)
  Industry Grade	40－340Kg plastic drum
  Food grade	1Kg, 2Kg plastic bottle
  Export Grade	20L to 1000L plastic drum

   

• Uses :

  It is widely used in pharmaceutical, perfumery, leather and chemical industry; as compound cyclizing agent in organic synthesis, acidifier and dehydrant; as substitute of ortho-phosphoric acid.

• Molecular Structure :