HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) HMDTMPA contact:bart@thwater.net CAS No. 23605-74-5 Molecular Formula: C10H28N2O12P4 Molecular Weight: 492.3 Properties of HMDTMPA: HMDTMPA is a white crystal powder at room temperature, slightly soluble in water, with solubility less than 5%. HMDTMPA can inhibit most scale formation such as calcium carbonate, calcium sulfate, barium sulfate and ferric oxide. As water treatment chemicals, HMDTMPA is used as scale inhibitors for calcium sulfate and barium sulfate, for calcium sulfate in particular. HMDTMPA has high scale inhibition rate and can last for long effective time. HMDTMPA can be used for crush treatment in oilfield and for water treatment in boiler. Specification of HMDTMPA: Appearance White crystal powder Active component (as HDTPMA-) % 97.0 min chloride (Cl-)% 0.5 max PH value (1% water solution) 2.0 max Fe3+,mg/L 35 max Package and Storage of HMDTMPA: 25kg inner liner polyethylene (PE) bag, or conformed to export environmental requirement, or confirmed by clients. Storage for twelve month in room shady and dry place.