트라이에틸렌테트라민 C화학적 특성, 용도, 생산
개요
Cross sensitivity is
possible with diethylenetriamine and diethylenediamine.
화학적 성질
Triethylenetetramine is a corrosive liquid.
용도
Triethylenetetramine is a selective CuII-chelator; crosslinking agent. Triethylenetetramine is undergoing trials for the treatment of heart failure in patients with diabetes.
생산 방법
TETA is manufactured by reacting ethylene dichloride and
ammonia under controlled conditions.
일반 설명
A yellowish liquid. Less dense than water. Combustible, though may be difficult to ignite. Corrosive to metals and tissue. Vapors heavier than air. Toxic oxides of nitrogen produced during combustion. Used in detergents and in the synthesis of dyes, pharmaceuticals and other chemicals.
화학적 성질
Triethylenetetramine (TETA) is hygroscopic, corrosive, and has a strong ammoniacal odor. With water a crystalline hydrate is formed. Like DETA, it is completely miscible with water and many polar organic solvents, but less so with lipids; with CCl4 a violent reaction occurs. Its four pKa values are 3.32, 6.67, 9.20, and 9.92. Technical-grade TETA is sometimes available as a distillation cut that also contains branched isomers and cyclic compounds.
반응 프로필
Triethylenetetramine is a strong base; reacts violently with strong oxidants; attacks aluminum, zinc, copper and its alloys. Handling Chemicals Safely 198. p. 934).
건강위험
Vapors from hot liquid can irritate eyes and upper respiratory system. Liquid burns eyes and skin. May cause sensitization of skin.
화재위험
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
색상 색인 번호
Triethylenetetramine is used as an amine hardener in
epoxy resins of the bisphenol A type. Cross-sensitivity is
possible with diethylenetriamine and diethylenediamine.
Safety Profile
Poison by intravenous
route. Moderately toxic by ingestion and
skin contact. An experimental teratogen.
Experimental reproductive effects. Mutation
data reported. A corrosive irritant to skin,
eyes, and mucous membranes. Causes skin
sensitization. Combustible when exposed to
heat or flame. Ignites on contact with
cellulose nitrate of high surface area. Can
react with oxidizing materials. To fight fire,
use CO2, dry chemical, alcohol foam. When
heated to decomposition it emits toxic
fumes of NOx.
Toxicology
Triethylenetetramine may induce lung edema on inhalation of its vapors. The compound is also an effective skin sensitizer. Following repeated dosing (ca. 50 mg each, 17 – 55 times) onto the skin of pregnant and nonpregnant guinea pigs, significant amounts were absorbed by the strongly irritated skin, leading to toxic effects in the kidneys, liver, brain, and placenta and causing abortion. Triethylenetetramine proved to be a mutagen in vitro but not in vivo.
Carcinogenicity
TETA was mutagenic in bacterial assays
and was positive in sister chromatid exchanges
and unscheduled DNA synthesis tests in vitro.8
It was not clastogenic in the mouse micronucleus
test in vivo after oral or intraperitoneal
administration.
Purification Methods
Dry the amine with sodium, then distil it under a vacuum. Further purification has been via the nitrate or the chloride salts. For example, Jonassen and Strickland [J Am Chem Soc 80 312 1958] separated TRIEN from admixture with TREN (38%) by solution in EtOH, cooling to approximately 5o in an ice-bath and adding conc HCl dropwise from a burette, keeping the temperature below 10o, until all of the white crystalline precipitate of TREN.HCl (see p 191) had formed and was removed. Further addition of HCl then precipitated thick, creamy white TRIEN.HCl (see below) which was crystallised several times from hot water by adding an excess of cold EtOH. The crystals were finally washed with Me2CO, then Et2O and dried in a vacuum desiccator. [Beilstein 4 H 255, 4 II 695, 4 III 542, 4 IV 1242.]
트라이에틸렌테트라민 준비 용품 및 원자재
원자재
준비 용품
1,1,4,7,10,10-HEXAMETHYLTRIETHYLENETETRAMINE
트라이에틸렌테트라아민에이치씨엘
다이에틸렌트라이아민
triethylene tetraamine hexamethylene phosphoric acid
트리에틸렌테트라민 테트라하이드로클로라이드
트리에틸렌디아민
1,4-피페라진 디에탄아민
1-(2-Hydroxyethyl)-2-imidazolidinone
1-(2-Aminoethyl)imidazolidin-2-one
3H,6H-2a,5,6,8a-Tetraazaacenaphthylene, octahydro-5a,8b-dimethyl-, cis-
