Hexamethylenediamine (tetramethylenephosphonate), potassium salt
- Phosphonate referred to as HMDTMP, derived from HexaMethyleneDiAmine (HMDA); neutral potassium salt with 23% actives
- Known for its calcium sulphate scale inhibition
- Niche applications include boiler treatment, flue gas desulphurization, and oilfield