Pyrophosphoric acid|H4P2O7|2466-09-3

TongVo Chemicals can supply high quality pyrophosphoric acid (H₄P₂O₇) for pharmaceutic, technical and electroplating applications.

Title: Pyrophosphoric acid

Synonyms: diphosphoric acid
Formula: H₄P₂O₇, Molecular: 117.97
CAS #: 2466-09-3, EC #: 219-574-0

Standard(s): HG/T3594 -1999

Grade: Technical grade, Pharmaceutical grade

Specifications	Technical grade	Pharmaceutical grade
Packing:	35Kgs/drum, 330Kgs/drum, in PP drums or IBCs, or as customer's requirements.
Assay (H₄P₂O₇) %	50.0 min	45.0 min
Color (Hazen)	30 max	20 max
Chloride (Cl) %	0.002 max	0.002 max
Sulphate (SO₄) %	0.008 max	0.006 max
Iron (Fe) %	0.005 max	0.002 max
Arsenic (As) %	0.001	0.0003 max
Heavy metal (as Pb) %	0.005 max	0.001 max
Phosphate (as P₂O₅ ) %	42.5 min	37.5 min

Pyrophosphoric acid is colorless, odorless, hygroscopic, syrupy liquid or crystal form. Density 2.04g/cm3 (25 ℃). Melting point 61 ℃. It is soluble in water, diethyl ether, and ethyl alcohol. Pyrophosphoric acid is from phosphoric acid by dehydration. Pyrophosphoric acid is a medium strong inorganic acid, it slowly hydrolyzes in the presence of water into phosphoric acid.

The anion, the salts, and the esters of pyrophosphoric acid are called pyrophosphates.

Pyrophosphoric acid is used as a catalyst, such as of organic phosphate.

Pyrophosphoric acid is also used as intermediate agent or diagnostic agent of heart disorders in pharmaceutical industry.

Keep in cool dry place.

Air transportation: Restricted.

Harzards Identification & Classifications: Class 8.

12 months.