Epoxy curing agent Knowledge Perfluorocyclobutane Perfluorocyclobutane

Perfluorocyclobutane Perfluorocyclobutane

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Perfluorocyclobutane structural formula

Structural formula

Business number 037T
Molecular formula C4F8
Molecular weight 200.03
label

Octafluorocyclobutane,

Octafluorocyclobutane,

Perfluorocyclobutane,

CF2CF2CF2CF2,

propellant,

Alicyclic compounds

Numbering system

CAS number:115-25-3

MDL number:None

EINECS number:204-075-2

RTECS number:None

BRN number:None

PubChem ID:None

Physical property data

1. Properties: Colorless, odorless, non-flammable gas

2. Density (g/mL, 21.1℃): 1.51

3. Relative vapor density ( g/mL, air=1): 7.0

4. Melting point (ºC): -41.4

5. Boiling point (ºC): 6.04

6. Relative density (20℃, 4℃): 1.654-20

7. Gas phase standard claims heat (enthalpy) (kJ·mol-1) : -1542.6

8. Liquid phase standard hot melt (J·mol-1·K-1): 227.4

9. Specific rotation (ºC): Undetermined

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

11. Vapor pressure (mmHg, 38ºC): Undetermined

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

13. Critical temperature (K): 115.3

14. Critical pressure ( MPa): 2.784

15. Critical density (g·cm-3): 0.616

16. Critical volume (cm3 sup>·mol-1): 325

17. Critical compression factor: 0.280

18. Eccentricity factor: 0.356

19. Solubility: Undetermined

Toxicological data

1. Acute toxicity: mice inhaled LC5O: 78pph/2H;

Rat inhaled 80% of this product for 4 hours, no abnormality was found (20% was O2)

2. Other multiple dose toxicity: mice inhaled TCLO: 861g/m3/4H/17W-I

3. Mutagenicity: Drosophila melanogaster inhaled chromosome deletion and non-disjunction: 99pph/10M

4. Hazardous characteristics: In case of high heat, the internal pressure of the container will increase, and there is a risk of cracking and explosion.

5. Combustion (decomposition) product: hydrogen fluoride

Ecological data

Route of entry: Inhalation.
Health hazards: At present, there are no reports of occupational poisoning, but pyrolysis can release highly toxic F-smoke.

Molecular structure data

1. Molar refractive index: 19.50

2. Molar volume (cm3/mol): 120.0

3. Isotonic specific volume (90.2K ): 218.8

4. Surface tension (dyne/cm): 11.0

5.   Polarizability (10-24cm3): 7.73

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: 8

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: none

6. Topological molecule polar surface area 0

7. Number of heavy atoms: 12

8. Surface charge: 0

9. Complexity: 151

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

None yet

Storage method

None yet

Synthesis method

None yet

Purpose

Used as stable and non-toxic food aerosol spray and medium gas.

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