Epoxy curing agent Knowledge Benzanthracene

Benzanthracene

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Benzanthracene structural formula

Structural formula

Business number 024G
Molecular formula C18H12
Molecular weight 228.29
label

Tetracene,

2,3-benzanthracene,

benzonaphthalene,

2,3-Benzanthracene,

Benz[b]anthracene,

Tetracene,

Chrysogen,

Aromatic hydrocarbons

Numbering system

CAS number:92-24-0

MDL number:MFCD00003702

EINECS number:202-138-9

RTECS number:QI7605000

BRN number:1909299

PubChem number:24869382

Physical property data

1. Characteristics: Orange-red leaf-like crystals. There is slight green fluorescence under sunlight.

2. density (g/ml, 25/4 ℃): 1.35

3. Relative density (D 204) : 1.35

4. 5. boiling point (ºC, normal pressure): 437.6

6. Gas phase standard burning (焓) (kj · mol –1 </sub ): -9098.5

7. Gas phase standard claims heat (enthalpy) (kJ·mol-1): 291.4

8. The standard heating of the liquid phase standard (焓) (kj · mol -1 ): -7302.61

9. Liquid phase standard claimed heat (enthalpy) (kJ·mol-1): 78.50

10.                                                                Liquid phase standard entropy (J·mol-1·K-1): 214.18

11. Liquid phase standard formation free energy (kJ·mol-1): 217.8

12.         Gas phase standard combustion heat (enthalpy) (kJ·mol-1): -9091.2

13. The gas phase standard claims heat (enthalpy) (kJ·mol-1): 293.0

14 .                                                                                                        Standard standard heat of combustion (enthalpy) of crystalline phase (kJ·mol-1): -8969.0

15. Claimed heat (enthalpy) (kJ·mol-1): 170.8

16.       The logarithmic value of the oil-water (octanol/water) partition coefficient: Undetermined

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

18. Under explosionLimit (%, V/V): Undetermined

19.         Solubility: Insoluble in most solvents, soluble in xylene, concentrated sulfuric acid, insoluble in benzene.

Toxicological data

None yet

Ecological data

None yet

Molecular structure data

1. Molar refractive index: 79.78

2. Molar volume (cm3/mol): 191.7

3. Isotonic specific volume (90.2K ): 518.7

4. Surface tension (dyne/cm): 53.5

5. Polarizability (10-24cm3): 31.62

Compute chemical data

1. Reference value for hydrophobic parameter calculation (XlogP): None

2. Number of hydrogen bond donors: 0

3. Number of hydrogen bond acceptors: 0

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: None

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 18

8. Surface charge: 0

9. Complexity: 236

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

1. Exist in smoke.

2. Sublimation in vacuum.

3. Exists in coal tar.

Storage method

This product should be sealed and stored in a cool, dry place.

Synthesis method

1. Oxidize with chromic acid to obtain tetracene-5,12-quinone. Use 6-(2-carboxybenzyl)-1,2,3,4-tetrahydronaphthalene to treat it with zinc chloride and sodium chloride, and then dehydrogenate it.

2. It is formed by the condensation of succinic acid and phthalic anhydride in the presence of sodium acetate.

Purpose

Organic Synthesis.

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