2-Ethylbutyraldehyde – Pu catalyst

Structural formula

Business number	02CY
Molecular formula	C6H12O
Molecular weight	100.16
label	3-formylpentane, a-ethylbutyraldehyde, 3-Formylpentane, 2-Ethylbutanal

Numbering system

CAS number:97-96-1

MDL number:MFCD00006985

EINECS number:202-623-5

RTECS number:ES2625000

BRN number:1209330

PubChem number:24846958

Physical property data

1. Properties: colorless liquid.

2. Density (g/mL, 25℃): 0.81-0.84

3. Relative vapor density (g/mL, air=1): 3.45

4. Melting point (ºC): -89

5. Boiling point (ºC, normal pressure): 117~119 (21.3kpa)

6. Relative density (20℃, 4℃): 0.8150

7. Refractive index _(n²⁰_D): 1.402

8. Flash point (ºC): 21.1

9. Relative density (25℃, 4℃): 0.8106

10. Refractive index at room temperature (n²⁰): 1.4024

11. Refractive index at room temperature (n²⁵): 1.4002

12. Saturated vapor pressure (kPa, 20ºC): 1.83

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): 7.7

18. Lower explosion limit (%, V/V): 1.2

19. Solubility: Insoluble in water, miscible in alcohol and ether.

Toxicological data

1. Skin/eye irritation: Start irritation test: rabbit skin contact, 500mgREACTION SEVERITY, slight reaction; 2. Acute toxicity: rat oral LD50: 3980mg/kg; rat inhalation LCLo: 8000ppm/4H; rabbit skin contact LD50 :5990μL/kg;

Ecological data

This substance is harmful to the environment, and special attention should be paid to the pollution of water bodies.

Molecular structure data

1. Molar refractive index: 29.99

2. Molar volume (cm³/mol): 125.2

3. Isotonic specific volume (90.2K ): 277.1

4. Surface tension (dyne/cm): 23.9

5. Polarizability (10-24cm3): 11.88

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): 1.5

2. Number of hydrogen bond donors: 0

3.�Number of � bond receptors: 1

4. Number of rotatable chemical bonds: 3

5. Number of tautomers: 2

6. Topological molecules Polar surface area 17.1

7. Number of heavy atoms: 7

8. Surface charge: 0

9. Complexity: 46.1

10. Number of isotope atoms: 0

11. Number of determined atomic stereocenters: 0

12. Number of uncertain atomic stereocenters: 0

13. Determined number of stereocenters of chemical bonds: 0

14. Uncertain number of stereocenters of chemical bonds: 0

15. Number of covalent bond units: 1

Properties and stability

1. Avoid contact with strong oxidants, strong alkali, strong reducing agents and air.

2. Found in flue-cured tobacco leaves.

Storage method

Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 10℃. The packaging must be sealed and must not come into contact with air. They should be stored separately from oxidants, reducing agents, alkalis, etc. and avoid mixed storage. Use explosion-proof lighting and ventilation facilities. It is prohibited to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with emergency release equipment and suitable containment materials.

Synthesis method

1. It is formed by the condensation of diethylmethanol and anhydrous oxalic acid or sulfuric acid.
2. The new method is obtained by reacting a-Z, alkenyl crotonal with iron filings and acetic acid.

3. Tobacco: FC, 40.

Purpose

Used in organic synthesis, mixed with triethylaluminum and used as a two-component igniter in rocket propulsion systems.