N-(2-Aminoethyl)piperazine N-(2-Aminoethyl)piperazine

Structural formula

• Numbering system
• Physical property data
• Toxicological data
• Ecological data
• Molecular structure data
• Computing chemical data
• More
  • Properties and Stability
  • Storage method
  • Synthesis method
  • Purpose

Numbering system

CAS number:140-31-8

MDL number:MFCD00005971

EINECS number:205-411-0

RTECS number:TK8050000

BRN number:104363

PubChem number:24890984

Physical property data

1. Properties: Colorless or light yellow transparent liquid.

2. Density (g/mL, 25/4℃): 0.9853Colorless or light yellow transparent liquid. 0.989

3. Relative vapor density (g/mL, air=1): Undetermined

4. Melting point (ºC): Undetermined

5. Boiling point (ºC, normal pressure): 210～230

6. Boiling point (ºC, 5.2kPa): Not available Determined

7. Refractive index: 1.500

8. Flash point (ºC): 93

9. Specific rotation (º): Undetermined

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10. Autoignition point or ignition temperature (ºC): Undetermined

11. Vapor pressure (kPa, 25ºC): Undetermined

12. Saturated vapor pressure (kPa, 60ºC): Undetermined

13. Heat of combustion (KJ/mol): Undetermined

14. Critical temperature (ºC): Undetermined

15. Critical pressure (KPa): Undetermined

16. Log value of oil-water (octanol/water) partition coefficient: Undetermined

17. Explosion upper limit (%, V /V): Undetermined

18. Lower explosion limit (%, V/V): Undetermined

19. Solubility: Soluble in water.

Toxicological data

Acute toxicity:

Oral LD50 1500mg/kg(ckn)

2140ul/kg(rat)

Skin LD50 880ul/kg(rbt)

Skin irritation severe 5mg/24H(rbt)

Main irritating effects:

On the skin: on the skin and mucous membranes Causes corrosive effects on skin and mucous membranes

Irritation.

On eyes:

Strong corrosive effect

IrritationThe influence of �.

Sensitization: May cause sensitization through skin contact.

Ecological data

General Notes

Do not allow this product to come into contact with groundwater, waterways or sewage systems.

Water hazard class 2 (German Regulation) (self-assessment via list) The substance is hazardous to water.

Even extremely small amounts of product leaching into the ground can pose a hazard to drinking water

Do not discharge materials into the surrounding environment without government permission.

Hazardous to organic matter in the water.

Molecular structure data

1. Molar refractive index: 38.68

2. Molar volume (cm³/mol): 129.1

3. Isotonic specific volume (90.2K): 324.9

4. Surface tension (dyne/cm): 40.0

5. Polarizability (10^-24cm³): 15.33

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): -1.3

2. Number of hydrogen bond donors: 2

3. Number of hydrogen bond acceptors: 3

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4. Number of rotatable chemical bonds: 2

5. Number of tautomers: none

6. Topological molecule polar surface area 41.3

7. Number of heavy atoms: 9

8. Surface charge: 0

9. Complexity: 68.7

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Number of uncertain chemical bond stereocenters: 0

15. Number of covalent bond units: 1

Properties and stability

Storage method

Store sealed and protected from light.

Synthesis method

1. This product is a by-product of the reaction of dichloroethane and ammonia to produce ethylenediamine products. Raw material consumption quota: dichloroethane 2100kg/t, liquid ammonia 620kg/t, caustic soda (42%) 4143kg/t.

2.The by-product produced when dichloroethane and ammonia are reacted to produce ethylenediamine and polyamines, which are distilled and Non-aminoethylpiperazine is prepared after decolorization.

Purpose

1. Surfactant. Corrosion inhibitors. Epoxy resin hardener. Drug intermediates. Anthelmintics.

2.Used as a curing agent for epoxy resin, it is easy to use, allows a wide range of addition amounts, low shrinkage after curing, and low toxicity Features. The reference dosage is 20 to 23 parts by mass, and the curing conditions are RT/3h+200℃/1h. The thermal deformation temperature of the cured product is 110~120℃. It is also used as a modifier for alkyd resin and as a raw material for manufacturing polyurethane resin, organic pigments and pharmaceuticals.