Name | Diethylenetriaminepentaacetic acid |
Synonyms | DTPA IDRANAL?V DTPA ACID HAMPEX ACID IDRANAL(R) V Pentetic acid COMPLEXONE V(R) DIETHYLENTRIAMINOPENTACETIC ACID DIETHYLENETRIAMINEPENTACETIC ACID Diethylenetriaminepentaacetic acid Diethylenetriamino pentaacetic acid Diethylenetriamine pentaacetic acid (DIETHYLENETRINITRILO)PENTAACETIC ACID N,N-bis{2-[bis(carboxymethyl)amino]ethyl}glycine DIETHYLENETRIAMINE-N,N,N',N'',N''-PENTAACETIC ACID (CARBOXYMETHYLIMINO)BIS(ETHYLENENITRILO)TETRAACETIC ACID (Carboxymethylimino)bis(ethylenenitrilo)tetraacetic acid (CARBOXYMETHYLIMINO)BIS(ETHYLENEDINITRILO)TETRAACETIC ACID 2,2'-([(carboxymethyl)imino]bis{ethane-2,1-diyl[(carboxymethyl)imino]})diacetate (non-preferred name) |
CAS | 67-43-6 |
EINECS | 200-652-8 |
InChI | InChI=1/C4H13N3.5C2H4O2/c5-1-3-7-4-2-6;5*1-2(3)4/h7H,1-6H2;5*1H3,(H,3,4) |
InChIKey | QPCDCPDFJACHGM-UHFFFAOYSA-N |
Molecular Formula | C14H23N3O10 |
Molar Mass | 393.35 |
Density | 1.56 |
Melting Point | 219-220 °C (lit.) |
Boling Point | 517.84°C (rough estimate) |
Flash Point | 200 °C |
Water Solubility | 5 g/L (20 ºC) |
Solubility | Easily soluble in hot water and alkaline solution, slightly soluble in cold water, insoluble in organic solvents such as ethanol and ether |
Vapor Presure | 4.77E-25mmHg at 25°C |
Appearance | White crystal |
Color | White to almost white |
Merck | 14,7125 |
BRN | 1810219 |
pKa | pK1:;pK2:2.55(+1);pK3:4.33(+2);pK4:8.60(-3);pK5,10.58 (25°C) |
PH | 2-3 (H2O, 20℃)(saturated solution) |
Storage Condition | room temp |
Stability | Stable. Incompatible with strong oxidizing agents. |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.5700 (estimate) |
MDL | MFCD00004289 |
Physical and Chemical Properties | Appearance: White Crystal |
Use | Used as a complexing agent, color washing kit, acrylonitrile liquid decolorizing agent, etc |
Risk Codes | R36 - Irritating to the eyes R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36/37/38 - Irritating to eyes, respiratory system and skin. R20 - Harmful by inhalation R63 - Possible risk of harm to the unborn child |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S37/39 - Wear suitable gloves and eye/face protection S36/37 - Wear suitable protective clothing and gloves. |
UN IDs | UN 3077 9/PG 3 |
WGK Germany | 2 |
RTECS | MB8205000 |
FLUKA BRAND F CODES | 3 |
TSCA | Yes |
HS Code | 29224995 |
Hazard Class | 9 |
Packing Group | III |
Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Reference Show more | 1. [IF=8.071] Tan Ke et al."Improvement of the Cu and Cd phytostabilization efficiency of perennial ryegrass through the inoculation of three metal-resistant PGPR strains."Environ Pollut. 2021 Feb;271:116314 |
This product is white crystalline or crystalline powder. Melting point 230 ℃ (decomposition), soluble in heat and alkali solution, slightly soluble in cold water, insoluble in alcohol, ether and other organic solvents.
The condensation of diethylenetriamine with chloroacetic acid gives diethylenetriamine pentaacetic acid.
It is used as a defoamer for pulping, papermaking, sewage treatment, metal cutting fluid and water-based coating. Especially in the pulp and paper industry, it can eliminate the floating pulp, and can improve the pulp washing speed, washing quality and bleaching quality, reduce the loss of good pulp, eliminate the spots on the paper, transparent point, holes, etc. The defoaming effect is good.
Add 283.7kg of monochloroacetic acid into the reaction vessel and stir with 220L of distilled water to dissolve. Add 300kg of 40% NaOH solution dropwise at 15 ℃ for approximately 1.5 hours. Add 51.6kg of diethylenetriamine dropwise under stirring, and control the temperature at around 20 ℃ during the dropwise addition process. Continue to add 120kg of NaOH aqueous solution (40%) dropwise and react at 40 ℃ for 10-12 hours. Cool the reaction liquid to 5-10 ℃. Drip 260L of concentrated hydrochloric acid while stirring, adjust the pH to 1.6-1.7, let it stand overnight, filter out the crystals, wash the crystals with 400L of ice water, vacuum dry to obtain about 130kg of crude product, and decolorize with distilled water to obtain pure product.