DETA

DETA - Names and Identifiers

Name	Diethylenetriamine
Synonyms	DETA Diethylenetriamine 1,4,7-Triazaheptane di(2-aminoethyl)amine 2,2'-iminobis-ethylamin 2,2-iminodi(ethylamine) 2,2'-diamino-diethylamin 2,2'-Diaminodiethylamine 1,5-Diamino-3-azapentane 2,2'-Iminodi(ethylamine) (Aminoethyl)ethanediamine 2,2'-iminobis(ethanamine) Diethylenetriamine, polymer-bound N-(2-aminoethyl)ethane-1,2-diamine N-(2-Aminoethyl)-1,2-ethanediamine 1,2-Ethanediamine,N-(2-aminoethyl)- N-(2-ammonioethyl)ethane-1,2-diaminium 2,2'-iminobis-ethylenediamine,n-(2-aminoethyl)-ethylamin
CAS	111-40-0
EINECS	203-865-4
InChI	InChI=1/C4H13N3/c5-1-3-7-4-2-6/h7H,1-6H2/p+3
InChIKey	RPNUMPOLZDHAAY-UHFFFAOYSA-N

DETA - Physico-chemical Properties

Molecular Formula	C4H13N3
Molar Mass	103.17
Density	0.955 g/mL at 25 °C(lit.)
Melting Point	-40 °C
Boling Point	206 °C
Flash Point	90 °C
Water Solubility	miscible
Vapor Presure	0.08 mm Hg ( 20 °C)
Vapor Density	3.6 (vs air)
Appearance	Liquid
Color	Clear
Odor	Strong ammoniacal; mildly ammoniacal.
Exposure Limit	ACGIH: TWA 1 ppm (Skin)NIOSH: TWA 1 ppm(4 mg/m3)
BRN	605314
pKa	pK1:4.42(+3);pK2:9.21(+2);pK3:10.02(+1) (25°C)
PH	>12 (100g/l, H2O, 20℃)
Storage Condition	Store below +30°C.
Stability	Stable, but absorbs carbon dioxide from the air. Incompatible with strong oxidizing agents, copper and its alloys.
Sensitive	Air Sensitive
Explosive Limit	1-10%(V)
Refractive Index	n20/D 1.484(lit.)
Physical and Chemical Properties	Yellow character with hygroscopic transparent viscous liquid, irritating ammonia odor. soluble in water, acetone, benzene, ethyl ether, methanol, etc., insoluble in n-heptane.
Use	Used in the synthesis of polyamide resin, surfactant, lubricant, epoxy resin curing agent

DETA - Risk and Safety

Risk Codes	R21/22 - Harmful in contact with skin and if swallowed. R34 - Causes burns R43 - May cause sensitization by skin contact R37 - Irritating to the respiratory system R26 - Very Toxic by inhalation
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S28 - After contact with skin, wash immediately with plenty of soap-suds.
UN IDs	UN 2079 8/PG 2
WGK Germany	2
RTECS	IE1225000
TSCA	Yes
HS Code	29212900
Hazard Class	8
Packing Group	II
Toxicity	LD50 orally in Rabbit: 1540 mg/kg

DETA - Upstream Downstream Industry

Downstream Products

Octadecanamide
Trilon C
Polyamide Resin
Diethylenetriamine

DETA - Nature

Open Data Verified Data

yellow with hygroscopic transparent viscous liquid, irritating ammonia odor, flammable, strong alkaline. Soluble in water, acetone, benzene, ether, methanol, difficult to dissolve in heptane, copper and its alloys corrosive. Melting Point -35 °c. Boiling point 207 °c. The relative density was 0.9586. Flash point 94 degrees Celsius. Refractive index 4810. This product has the reactivity of secondary amine, easy to react with a variety of compounds, its derivatives have a wide range of uses.

Last Update：2025-06-10 22:55:16

DETA - Preparation Method

Open Data Verified Data

It can be obtained by ammoniation of dichloroethane. 1, 2-chloroethane and aqueous ammonia were fed into a tubular reactor to carry out a hot-pressing ammoniation reaction at a temperature of 150-250 ° C. And a pressure of 392. 3kPa. The reaction solution was neutralized with alkali to obtain a mixed free amine, which was concentrated while removing sodium chloride. Then, the crude product was distilled under reduced pressure to cut off a fraction between 195 and 215 ° C. To obtain a finished product. This method can simultaneously produce ethylenediamine, triethylenetetramine, tetraethylenepentamine and polyethylenepolyamine, which can be obtained by controlling the temperature of the distillation column to distill the mixture of amines and cutting off different fractions for separation.

Last Update：2022-01-01 10:35:41

DETA - Application

Open Data Verified Data

This product is mainly used as a solvent and organic synthesis intermediates, can be used to prepare epoxy resin curing agent, gas purification agent (CO2), lubricating oil additives, emulsifiers, photographic chemicals, surfactants, fabric finishing agents, paper reinforcing agents, amino-carboxyl complexing agents, metal chelating agents, heavy metal hydrometallurgy and cyanide-free plating diffusers, brighteners, and synthetic ion exchange resins and polyamide resins.

Last Update：2025-08-19 16:24:40

DETA - Safety

Open Data Verified Data

This product is a strong alkaline corrosive liquid, stimulating the skin, mucous membranes, eyes and respiratory tract, can cause skin allergy and bronchial asthma. Long-term exposure or inhalation of high concentrations of steam can cause Head Pain, memory loss. The maximum allowable concentration at the operation site is 10 -6. Ld1.8 mg/kg. Should avoid direct contact with the human body, splash and skin, immediately water or boric acid solution rinse, and then apply to Boric Acid Ointment, severe cases sent to the hospital for diagnosis and treatment. This product can be used 0. 5kg or lOkg glass bottle packaging, this product is flammable, should be sealed storage, stored in a cool and ventilated place. Moisture-proof, heat-proof, and acid articles Isolation. It can be transported by covered car or train and handled in accordance with railway crisis Regulation No. 96007.

Last Update：2025-06-10 22:55:16

DETA - Reference Information

LogP	-1.58 at 20℃
NIST chemical information	information provided by: webbook.nist.gov (external link)
EPA chemical substance information	information provided by: ofmpeb.epa.gov (external link)
Introduction	diethylenetriamine is a light yellow liquid, which is miscible with water, ethanol and acetone, and is mainly used as a solvent and an intermediate in organic synthesis.
Use	used in the synthesis of polyamide resins, surfactants, lubricants, epoxy resin curing agent, etc. diethylenetriamine is mainly used as solvent and organic synthesis intermediate, used for the preparation of gas purification agent (CO2 removal), lubricating oil additives, emulsifiers, photographic chemicals, surfactants, fabric finishing agents, paper reinforcing agents, carboxyl complexing agents, ashless additives, metal chelating agents, heavy metal hydrometallurgy and cyanide-free plating diffusers, brighteners, ion exchange resins and polyamide resins. The fixing agent, Suprafix DFC, can be prepared by reacting diethylenetriamine with dicyandiamide: 30.9 parts of diethylenetriamine are added to a reaction vessel with a geared stirring, and 24.8 parts of dicyandiamide are added under stirring. When the temperature increased to 100 °c, the release of ammonia began, and then the temperature was slowly increased to 145-160 °c, and the material gradually became viscous from the liquid state. After 5-8 hours of reaction, the reactants were discharged, cooled and pulverized. Similar color fixing agents can be obtained by the reaction of ethylene diamine, triethylenetetramine, tetraethylenepentamine and dicyandiamide, or diethylene triamine and guanidine carbonate. In addition, the ester ratio of diethylenetriamine and dicyandiamide is different, and the degree of viscosity of the product is also different. Such fixing agents are used in the post-treatment of direct dye dyeing in order to improve the fastness properties, in particular the fastness to washing with water. When treated with 0.3% fixing agent, the washing fastness of cotton fabric can be improved from grade 1 to Grade 4-5. Diethylenetriamine is a highly active epoxy resin curing agent, which is mainly used in laminated products, cast products, adhesives and coatings, etc. The general dosage is 5-10 parts, but this kind of aliphatic polyamine has water solubility and high vapor pressure, it has a irritating effect on the skin of the operator, and therefore various modified varieties have been developed. diethylenetriamine is used in biological studies where polyamines inhibit carbonic anhydrase by anchoring to zinc-coordinated water molecules. carboxyl complexing agent, sulfur, acid gas, dye and various resin solvents, acid saponification agent, gas purification agent. Resin curing agent.
production method	was obtained by ammoniation of dichloroethane. 1, 2-dichloroethane and aqueous ammonia were fed to a tubular reactor for hot-pressing amination at a temperature of 150 ° C. To 250 ° C. And a pressure of 392.3kPa. The reaction solution was neutralized with alkali to obtain a mixed free amine, which was concentrated while removing sodium chloride. Then, the crude product was distilled under reduced pressure to cut off a fraction between 195 and 215 ° C. To obtain a finished product. This method can simultaneously produce ethylenediamine, triethylenetetramine, tetraethylenepentamine and polyethylenepolyamine, which can be obtained by controlling the temperature of the distillation column to distill the mixture of amines and cutting off different fractions for separation.
category	flammable liquid
toxicity grade	high toxicity
Acute toxicity	oral-rat LD50: 74 mg/kg; Abdominal injection-mouse LD50: 71 mg/kg
stimulation data	Skin-rabbits 10 mg/24 h severe; eye-rabbit 750 μg severe
flammability hazard characteristics	flammable in open flame, high temperature, strong oxidant; combustion emissions
storage and transportation characteristics	The package is complete, light and light unloading; The warehouse is ventilated, away from open flame, high temperature, and oxidant, separate storage of acid
fire extinguishing agent	foam, dry powder, carbon dioxide, water mist, sand
Occupational Standard	TLV-TWA 1 PPM (4 mg/m3); Tel 3 PPM (12 mg/m3)
spontaneous combustion temperature	676 ° F.
toxic substance data	information provided by: pubchem.ncbi.nlm.nih.gov (external link)