HexaMethyleneDiamineTetra (MethylenePhosphonic Acid)
| CAS No. | 23605-74-5 | EINECS No. | 245-781-0 |
| Molecular Formula | C10H28N2O12P4 | Molecular Weight | 492.3 |
Structural Formula
Product Features
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.
Technical Specification
| Parameter | Standard |
|---|---|
| Appearance | White crystal powder |
| Active component (as HDTPMA-), % | 97.0 min |
| chloride (Cl-), % | 0.5 max |
| pH (1% water solution) | 2.0 max |
| Fe, mg/L | 35 max |
Applications & Usage
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.
Scale and Corrosion inhibition Performance
| CaCO3 inhibition | CaSO4 inhibition | CaC2O4 inhibition | BaSO4 inhibition | Iron Control |
|---|---|---|---|---|
| Poor | Very Good | Very Good | Very Good | Yes |
| Steel corrosion inhibition | Calcium Tolerance | |||
| Steel corrosion inhibition | Calcium Tolerance | |||
Package & Storage
| HMDTMPA Solid | |||||
|---|---|---|---|---|---|
| 25kg Bag | Bulk Bag | Fiber drum | |||
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| Storage for 10 months in shady room and dry place. | |||||
Hazard & Safety Precaution
| Hazard Information | Safety Precaution |
|---|---|
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| Once contacted with eye and skin, flush with plenty of clean water. | |
Corrosive, Class 8, UN 3261
