Polyether_Polyether Polyol Knowledge Perfluorocyclobutane Perfluorocyclobutane

Perfluorocyclobutane Perfluorocyclobutane

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.

This article is from the Internet, does not represent the position of Toluene diisocyanate reproduced please specify the source.https://www.polyether-factory.com/archives/17462

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