CAS 24937-79-9 Poly(vinylidene fluoride), average Mw ~534,000, powder

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Poly(vinylidene fluoride), average Mw ~534,000, powder

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Catalog Number

ACM24937799-1

Product Name

Poly(vinylidene fluoride), average Mw ~534,000, powder

Structure

CAS

24937-79-9

Category

Polymers

Description

1,1-Difluoroethylene (or vinylidene fluoride) is a colorless gas which is flammable in the ranges of 5.5 to 21%. It is toxic by inhalation and contact. It is slightly soluble in water and soluble in alcohol and ether. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket.;GasVapor;COLOURLESS COMPRESSED LIQUEFIED GAS WITH CHARACTERISTIC ODOUR.;Colorless gas with a faint, ethereal odor.;Colorless gas with a faint, ethereal odor. [Note: Shipped as a liquefied compressed gas.]

IUPAC Name

1,1-difluoroethene

Molecular Weight

64.03g/mol

Molecular Formula

C2H2F2;CH2=CF2;C2H2F2

Canonical SMILES

C=C(F)F

InChI

InChI=1S/C2H2F2/c1-2(3)4/h1H2

InChI Key

BQCIDUSAKPWEOX-UHFFFAOYSA-N

Boiling Point

-123 °F at 760 mm Hg (NTP, 1992);-85.7 °C;-85.7 °C;-83 °C;-123°F;-122°F

Melting Point

-227 °F (NTP, 1992);-144.0 °C;-144 °C at 1 atm /freezing point/;171 °C;-144 °C;-227°F;-227°F

Flash Point

Flammable gas;NA (Gas)

Density

0.617 at 75 °F (liquid) (NTP, 1992);0.617 g/cc at 24 °C (liquid);1.76;Relative density (water = 1): 0.6;0.617 at 75°F;2.21(relative gas density)

Solubility

0.018 g/100 g at 77° F and 760 mm Hg (NTP, 1992);0.20 M;Slightly sol in water; sol in alcohol and ether;Water solubility = 6.3 cu cm/100 g at 25 °C and 10 kPa;Water solubility = 0.018 g/100 g at 25 °C and 760 mm Hg;Water solubility = 165 ppm at 25 °C;In water, 164.9 mg/L at 25 °C;Somewhat soluble in dimethylacetamide; attacked by hot concentrated sulfuric acid or n-butylamine;Solubility in water: none;Insoluble

Color/Form

Colorless gas;Colorless gas [Note: Shipped as a liquefied compressed gas].;Crystals ... Available forms: powder, pellets, solution, and dispersion

Complexity

Covalently-Bonded Unit Count

EC Number

200-867-7;607-458-6

Exact Mass

64.012456g/mol

Formal Charge

Heat of Vaporization

1.7712X10+07 J/kmol at melting point

Heavy Atom Count

ICSC Number

0687

Log P

1.24 (LogP);log Kow = 1.24;1.24

MeSH Entry Terms

1,1-difluoroethylene;vinylidene fluoride

Monoisotopic Mass

64.012456g/mol

NSC Number

267683

Odor

Nearly odorless;Faint, ethereal

Other Experimental

Conversion factors: 1 mg/L is equivalent to 382 ppm and 1 ppm is equivalent to 2.62 mg/cu m at 25 °C, 760 mm Hg;Critical density = 417 kg/cu m; Heat of formation = -345.2 kJ/mol at 25 °C; Heat of polymerization = -474.21 kJ/mol at 25 °C; explosive limits = 5.8-20.3 vol % in air;Critical molar volume: 154 cu cm/mol;Dipole moment = 1.3893;Explosive limits in air 5.5-21%;Heat of evaporation = 13189 J/mol at -40 °C;Liquid molar volume = 0.055194 cu m/kmol; Vapor pressure = 3X10+4 mm Hg at 25 C (calculated from experimentally derived coefficients);Sensitive to heat or stabilizers; alkyl boron and alkyl hyponitrite compounds, among others, initiate polymerization;Henry's Law constant = 3.79X10-1 atm-cu m/mol at 25 °C (est);Hydroxy radical reaction rate constant = 2.10X10-12 cu cm/molec-sec at 23 °C;Thermally stable from -62 to 148 °C; combustible, self-extinguishing and non-dripping; Tensile strength 7000 psi at 25 °C, yield strength 5,500 psi, elongation 300%, compression strength 10,000 psi, thermal conductivity 1.05 Btu/hr/sq ft/F/in; water absorption 0.04% in 24 hr; resistant to oxidative degradation, electricity, acods, alkalies, oxidizers, halogens;Specific gravity: 1.75-1.80; glass transition: -40 °C;Specific heat: 1255-1525 J/(kg K)

Refractive Index

Index of refraction: 1.42

Rotatable Bond Count

RTECS Number

KW0560000

Stability

Chemical stability: Stable under recommended storage conditions.

UNII

3C1IX2905B

UN Number

1959;1959;1959;1959;1959

Vapor Density