Diethylenetriaminepenta(methylene-phosphonic acid)

IUPAC Name: [Bis[2-[bis(phosphonomethyl)amino]ethyl]amino]methylphosphonic acid
Molecular Formula: C₉H₂₈N₃O₁₅P₅
Molecular Weight: 573.20 g/mol
SMILES: O=P(O)(O)CN(CCN(CP(=O)(O)O)CP(=O)(O)O)CCN(CP(=O)(O)O)CP(=O)(O)O
InChI: InChI=1/C9H28N3O15P5/c13-28(14,15)5-10(1-3-11(6-29(16,17)18)7-30(19,20)21)2-4-12(8-31(22,23)24)9-32(25,26)27/h1-9H2,(H2,13,14,15)(H2,16,17,18)(H2,19,20,21)(H2,22,23,24)(H2,25,26,27) 
EINECS: 239-931-4
Product Categories: Organics; Phosphonate antiscalant
Index of Refraction: 1.628 
Molar Refractivity: 104.62 cm³ 
Molar Volume: 294.6 cm³ 
Polarizability: 41.47×10^-24 cm³ 
Surface Tension: 130 dyne/cm 
Density: 1.945 g/cm³ 
Flash Point: 560.6 °C 
Enthalpy of Vaporization: 158.66 kJ/mol 
Boiling Point: 1003.3 °C at 760 mmHg 
Vapour Pressure of Diethylenetriaminepenta(methylene-phosphonic acid) (CAS NO.15827-60-8): 0 mmHg at 25 °C

Hazard Codes: Xi,C
Risk Statements: 36/37/38-51/53-41 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R41:Risk of serious damage to the eyes.
Safety Statements: 26-36-33-28-23-16-9 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S33:Take precautionary measures against static discharges. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S23:Do not breathe vapour. 
S16:Keep away from sources of ignition. 
S9:Keep container in a well-ventilated place.
RIDADR of Diethylenetriaminepenta(methylene-phosphonic acid) (CAS NO.15827-60-8): UN 1789 8/PG 2

  Diethylenetriaminepenta(methylene-phosphonic acid) (CAS NO.15827-60-8), its Synonyms are Diethylenetriamine, pentamethylenepentaphosphonic acid ; (((Phosphonomethyl)imino)bis(ethane-2,1-diylnitrilobis(methylene)))tetrakisphosphonic acid ; Phosphonic acid, (((phosphonomethyl)imino)bis(2,1-ethanediylnitrilobis(methylene)))tetrakis- ; Phosphonic acid, P,P',P'',P'''-(((phosphonomethyl)imino)bis(2,1-ethanediylnitrilobis(methylene)))tetrakis- . It is normally delivered as salts, because the acid form has very limited solubility in water and tends to crystallize in concentrated aqueous solutions. It is a nitrogenous organic polyphosphonic acid. It shows very good inhibition of the precipitation of barium sulfate . At high alkali and high temperature (above 210 °C) environments DTPMPA has better scale and corrosion inhibition effect than other phosphonates.