On Tetrapotassium pyrophosphate the role of softening agent in the human body in embalming techniques is confirmed (1).

Also labeled as a pesticide (2).

Other studies

Anti-calculus efficacy of Periogen® oral rinse in gingivitis patients.
Ballini A, Cantore S, Dipalma G, De Vito D, Saini R, Saini SR, Georgakopoulos P, Gargiulo Isacco C, Inchingolo F.
J Biol Regul Homeost Agents. 2019 May 3;33(3).

Determining the effective emetic dosage of tetrapotassium pyrophosphate (TKPP) in dogs.
Akahori F, Masaoka T, Akiyama E.
J Toxicol Sci. 1982 May;7(2):151-8.

Anti-plaque and antimicrobial efficiency of different oral rinses in a 3-day plaque accumulation model.
Cantore S, Ballini A, Mori G, Dibello V, Marrelli M, Mirgaldi R, De Vito D, Tatullo M.
J Biol Regul Homeost Agents. 2016 Oct-Dec;30(4):1173-1178

Dentin abrasivity of various desensitizing toothpastes.
Arnold WH, Gröger Ch, Bizhang M, Naumova EA.
Head Face Med. 2016 Apr 2;12:16. doi: 10.1186/s13005-016-0113-1.

References_________________________________________________

(1) Human body preservation – old and new techniques
Erich Brenner
J Anat. 2014 Mar;224(3):316-44. doi: 10.1111/joa.12160. Epub 2014 Jan 18.
(2) An index method to evaluate growers’ pesticide use for identifying on-farm innovations and effective alternative pest management strategies: a case study of winegrape in Madera County, California
Wen-juan Li, Zhi-hao Qin, Ming-hua Zhang, Joe Browde
J Zhejiang Univ Sci B. 2011 Mar;12(3):226-46. doi: 10.1631/jzus.B0900264.

Tetrapotassium pyrophosphate is added in cosmetic products as a softener.

It is used in medicine, together with other compounds, in mouthwashes.

Tetrapotassium pyrophosphate studies

Molecular Formula: K₄P₂O₇  K₄O₇P₂

Molecular Weight: 330.334 g/mol

UNII: B9W4019H5G

CAS: 7320-34-5  10124-52-4  1174512-44-7  1269628-81-0

EC Number: 230-785-7  233-338-4

PubChem Substance ID 24859317

MDL number MFCD00011393

Synonyms:

• Tetrapotassium diphosphate
• Diphosphoric acid, tetrapotassium salt
• Potassium diphosphate
• Tetra Potassium Pyrophosphate
• tetrapotassium ion diphosphate
• tetrapotassium phosphonato phosphate
• Potassium diphosphate, 98%, extra pure
• Potassiumpyrophosphate
• Diphosphoric acid, potassium salt
• Pyrophosphoric acid, tetrapotassium salt