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.