140-31-8 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 140-31-8 differently. You can refer to the following data:
1. viscous light yellow liquid
2. N-Aminoethypiperazine is a combustible and corrosive aliphatic amine It is a colorless to light yellow liquid
Uses
Different sources of media describe the Uses of 140-31-8 differently. You can refer to the following data:
1. Used for studying corrosion inhibition
2. 1-(2-Aminoethyl)piperazine is utilized in a variety of reactions for studying corrosion inhibition, biological activity and metal ligand effects on catalysis. It is used for epoxy curing, surface activation, and as an asphalt additive. It is used in lube oil and fuel additives, mineral processing aids, polyamide resins, urethane chemicals, wet strength resins.
Definition
An amine combining a primary, secondary, and ter-
tiary amine in one molecule.
General Description
A colorless liquid with a faint fishlike odor. Flash point 199°F. Corrosive to tissue. Toxic oxides of nitrogen are produced by combustion.
Air & Water Reactions
Water soluble.
Reactivity Profile
N-Aminoethylpiperazine neutralizes acids to form salts plus water in exothermic reactions. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated in combination with strong reducing agents, such as hydrides.
Hazard
Strong irritant to tissue.
Health Hazard
INHALATION: Burning sensation, coughing, wheezing, laryngitis, shortness of breath, headache, nausea, and vomiting. EYES AND SKIN: Extremely destructive to mucous membranes, upper respiratory tract, eyes and skin. Causes burns on short contact.
Fire Hazard
Special Hazards of Combustion Products: Toxic fumes of NO x
Flammability and Explosibility
Notclassified
Safety Profile
Poison by intraperitoneal route. Moderately toxic by ingestion and skin contact. Experimental reproductive effects. A skin and eye irritant. Mutation data reported. See also AMINES. Moderately flammable when exposed to heat, flame, sparks, or powerful oxidlzers. To fight fire, use alcohol foam. When heated to decomposition it emits toxic fumes of NOx,.
Potential Exposure
Used as an epoxy curing agent and making pharmaceuticals; synthetic fibers, and other chemicals.
Shipping
UN2815 N-Aminoethylpiperazined, Hazard class: 8; Labels: 8-Corrosive material
Incompatibilities
Solution is a strong base. Reacts with nitrosating agents (e.g., nitrites, nitrous gases, nitrous acid); capable of releasing carcinogenic nitrosamines. Incompatible with nonoxidizing mineral acids; strong acids; organic acids, acid chlorides; acid anhydrides; organic anhydrides; isocyanates, chloroformates, vinyl acetate; acrylates, substituted allyls; alkylene oxides; epichlorohydrin, ketones, aldehydes, alcohols, glycols, phenols, cresols, caprolactum solution; strong oxidizers. Contact with copper alloys, zinc or galvanized steel may cause violent reaction.
Check Digit Verification of cas no
The CAS Registry Mumber 140-31-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,4 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 140-31:
(5*1)+(4*4)+(3*0)+(2*3)+(1*1)=28
28 % 10 = 8
So 140-31-8 is a valid CAS Registry Number.
InChI:InChI=1/C6H15N3/c1-6(7)9-4-2-8-3-5-9/h6,8H,2-5,7H2,1H3
140-31-8Relevant articles and documents
Nitric oxide reduction of copper(II) complex with tetradentate amine ligand followed by ligand transformation
Sarma, Moushumi,Singh, Amardeep,Gupta G., Subrahmanyam,Das, Gopal,Mondal, Biplab
, p. 63 - 70 (2010)
Copper(II) complex 1 with a tetradentate ligand L [L = tris(2-aminoethyl)amine, tren] has been prepared as its perchlorate salt. Single crystal X-ray structure of 1 indicates its trigonal bipyramidal shape in the solid state. The complex, in dry and degassed acetonitrile solvent, was made to react with nitric oxide gas and the copper(II) center has been observed to reduce to Cu(I) with simultaneous nitrosation followed by diazotization at the terminal primary amine positions of the ligand to result into cyclization product, 1-(2-aminoethyl)piperzine, L′ along with tris(2-aminoethyl)ammonium perchlorate, L′′-perchlorate. However, when an acetonitrile:water (10:1, v/v) mixture has been used as the solvent, the reduction of Cu(II) to Cu(I) is observed and the ligand is found to be precipitated out only as L′′-perchlorate. The reduction of Cu(II) to Cu(I) has been studied by UV-visible, 1H NMR and EPR spectroscopic techniques and by X-ray single crystal structure determination. Both the L′ and L′′-perchlorate have been isolated from the reaction mixture and characterized by using microanalytical studies, various spectroscopic techniques and X-ray single crystal structure determination.
BLENDS OF AMINES WITH PIPERAZINE FOR CO2 CAPTURE
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Page/Page column, (2015/03/16)
Compositions and methods related to the removal of acidic gas. In particular, the present disclosure relates to a composition and method for the removal of acidic gas from a gas mixture using a solvent comprising a blend of piperazine and at least one diamine or triamine.
Unknown
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Paragraph 0588; 0589; 0590; 0591, (2013/04/13)
A process for preparing amines of the formula (II) [in-line-formulae]R1—NH—CH2—CH2—NH2??(II)[/in-line-formulae]in which R1 is hydrogen or radicals of the formula x is integers from zero to two, by reacting nitriles of the formula (I) [in-line-formulae]R2—NH—CH2—CN??(I)[/in-line-formulae]in which R2 is hydrogen or radicals of the formula and R3 is the NC— or H2N—CH2- radicals and x is integers from zero to two, with hydrogen in the presence of a catalyst in suspension mode or in a fixed bed, wherein the space velocity on the catalyst, based on the catalyst surface area, is 10?6 to 10?4 kg of nitrile of the formula (I) per m2 of catalyst surface area and hour, the catalyst surface area being determined by the BET method.
