Name | hexamethylenediamine-N,N,N',N'-tetrakis-(methylphosphon.ac.) |
Synonyms | hdtmp HDTMPA HMDTMPA dequest2051 DEQUEST 2054(R) dequest2051deflocculantandsequestrant Hexamethy lenediaminetetra(methylenephosphonicacid) HexaMethyleneDiamineTetra (MethylenePhosphonic Acid) Hexamethylenebis(Nitrilodimethylene)Tetraphosphonic Acid hexamethylenediamine-N,N,N',N'-tetrakis-(methylphosphon.ac.) HEXAMETHYLENEDIAMINE-N,N,N',N'-TETRAKIS(METHYLPHOSPHONIC ACID) (1,6-hexanediylbis(nitrilobis(methylene)))tetrakisphosphonicacid [1,6-hexanediylbis[nitrilobis(methylene)]]tetrakis-phosphonicaci (1,6-hexanediylbis(nitrilobis(methylene)))tetrakis-phosphonicaci [hexane-1,6-diylbis(nitrilodimethanediyl)]tetrakis(phosphonic acid) Hexamethylenediamine-N,N,N,N-tetrakis(methylphosphonic acid) solution |
CAS | 23605-74-5 |
EINECS | 245-781-0 |
InChI | InChI=1/C10H28N2O12P4/c13-25(14,15)7-11(8-26(16,17)18)5-3-1-2-4-6-12(9-27(19,20)21)10-28(22,23)24/h1-10H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24) |
Molecular Formula | C10H28N2O12P4 |
Molar Mass | 492.23 |
Density | 1.4353 (rough estimate) |
Melting Point | 242 °C |
Boling Point | 546.04°C (rough estimate) |
Flash Point | 477.1°C |
Vapor Presure | 3.27E-33mmHg at 25°C |
pKa | 0.70±0.10(Predicted) |
Refractive Index | 1.5300 (estimate) |
Use | HDTMPA is a white crystalline powder at room temperature, slightly soluble in water, and its solubility is less than 5% at room temperature. HDTMPA can inhibit the formation of various scales (such as calcium carbonate scale, calcium sulfate scale, barium sulfate scale and iron oxide scale), but it is mainly used to inhibit calcium sulfate and barium sulfate scale in water treatment. In a variety of organic phosphoric acid, its performance of inhibiting calcium sulfate scale is the best, not only the scale inhibition rate is high, and the effective time is long, so it is especially suitable for the extrusion treatment of oil fields. HDTMPA can also be used in boiler water treatment. |
WGK Germany | 1 |
RTECS | SZ8560500 |
white powder, slightly soluble in water, room temperature water solubility of less than 5%. With the formation of strong alkali soluble in water Salt, hydrolysis resistance.
anhydrous hexamethylene diamine, formaldehyde, phosphorus trichloride reflux should be liquid. This solution is slowly dropped into anhydrous ethanol, that is, there is a white precipitation, filtered ethanol, that is, a solid product.
can inhibit the formation of various scales (such as calcium carbonate scale, calcium sulfate scale, barium sulfate scale and iron oxide scale, etc.), but in water treatment is mainly used to inhibit calcium sulfate and barium sulfate scale. Among all kinds of organic phosphonic acids, the performance of inhibiting calcium sulfate scale is the best, not only the scale inhibition rate is high, and the effective time is long, so it is especially suitable for the extrusion treatment of oil fields. It can also be used in boiler water treatment.
for a 25% aqueous suspension, rat oral LD50: 7940mg/kg. It has a stimulating effect on the eyes and skin. Contact with eyes and skin should be avoided. Staff should be protected. If the eyes and skin are touched, they should be immediately rinsed with plenty of water.