‌‌Diethylenetriamine‌ (C4H13N3) is an important organic compound with a wide range of uses, including:

‌Solvents and organic synthesis intermediates‌: Diethylenetriamine is miscible with water, ethanol, and acetone, so it is often used as a solvent and organic synthesis intermediate.
‌Epoxy resin curing agent‌: used in the manufacture of polyamide resins, ion exchange resins, surfactants, lubricant additives, fabric finishing agents and photographic chemicals.
‌Gas Purifier‌: Used as a gas purifier for CO2 removal.
‌Paper Strengthener‌: Used to increase the strength and durability of paper.
‌Aminocarboxylic complexing agent and metal chelating agent‌: used as a diffusing agent and brightener in metal hydrometallurgy and cyanide-free electroplating.
‌Brightener‌: Used to improve the finish and brightness of metal surfaces.
These uses of diethylenetriamine reflect its important position in the chemical industry, from solvents and intermediates to specific industrial applications, such as epoxy resin curing agents and gas purifiers, etc., showing its versatility and wide range Applicability‌

Diethylenetriamine Chemical Properties
Melting point -40 °C
Boiling point 206 °C
density 0.955 g/mL at 25 °C(lit.)
vapor density 3.6 (vs air)
vapor pressure 0.08 mm Hg ( 20 °C)
refractive index n20/D 1.484(lit.)
Fp 90 °C
storage temp. Store below +30°C.
solubility Chloroform (Soluble), Methanol (Slightly)
pka pK1:4.42(+3);pK2:9.21(+2);pK3:10.02(+1) (25°C)
form Liquid
color Clear
Odor Strong ammoniacal; mildly ammoniacal.
PH >12 (100g/l, H2O, 20℃)
explosive limit 1-10%(V)
Water Solubility miscible
Sensitive Air Sensitive
BRN 605314
Exposure limits ACGIH: TWA 1 ppm (Skin)
NIOSH: TWA 1 ppm(4 mg/m3)
Stability: Stable, but absorbs carbon dioxide from the air. Incompatible with strong oxidizing agents, copper and its alloys.
InChIKey RPNUMPOLZDHAAY-UHFFFAOYSA-N
LogP -1.58 at 20℃
CAS DataBase Reference 111-40-0(CAS DataBase Reference)
NIST Chemistry Reference 1,2-Ethanediamine, N-(2-aminoethyl)-(111-40-0)
EPA Substance Registry System Diethylenetriamine (111-40-0)

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