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Graphene

Catalog Number
ACM1034343980-3
Product Name
Graphene
CAS
1034343-98-0
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Description
• Thickness: <3 layers.• Lateral size : 0.5-5 μm.
IUPAC Name
methane
Molecular Formula
CH4;CH4;CH4
Molecular Weight
16.043g/mol
Boiling Point
4200 °C
Melting Point
3652 - 3697 °C (sublimes)
Flash Point
-306 °F (NTP, 1992);-188 °C (-306 °F) - closed cup;Flammable gas
Density
0.415 to 0.45 at -259.6 °F (USCG, 1999);0.422 at -256 °F (USCG, 1999);0.554 at 0 ℃/4 ℃ (air = 1 ) or 0.7168 g/liter
Solubility
3.5 mL/100 mL at 63° F (NTP, 1992);Insoluble;0.00 M;In water, 22 mg/L at 25 ℃;Slightly soluble in acetone; soluble in ethanol, ethyl ether, benzene, toluene, methanol;0.91 mL in 1 g ether at 20 ℃; 0.60 mL in 1 g ethyl alcohol at 20 ℃;0.022 mg/mL at 25 ℃;Solubility in water, ml/100ml at 20 ℃: 3.3
SMILES
C
InChI
InChI=1S/CH4/h1H4
InChIKey
VNWKTOKETHGBQD-UHFFFAOYSA-N
Appearance
Black solid
EC Number
200-812-7;232-343-9
ICSC Number
0291
RTECS Number
PA1490000
UN Number
1972;1971;1972;1972;1971;1971;1971;1971
UNII
2P3VWU3H10;OP0UW79H66
Rotatable Bond Count
0
Exact Mass
16.0313g/mol
Monoisotopic Mass
16.0313g/mol
Heavy Atom Count
1
Formal Charge
0
Complexity
0
Covalently-Bonded Unit
1
Color/Form
Colorless gas
Odor
Odorless;Weak odor
H-Bond Donor
0
H-Bond Acceptor
0
Heat of Vaporization
8.19 kJ/mol
Viscosity
34.8 uP at -181.6 ℃; 76.0 uP at -78.5 ℃; 102.6 uP at 0 ℃; 108.7 uP at 20 ℃; 133.1 uP at 100.0 ℃; 160.5 uP at 200.5 ℃; 181.3 uP at 284 ℃; 202.6 uP at 380 ℃; 226.4 uP at 499 ℃
Other Experimental Properties
VP: 1 Pa at -220 ℃ (solid); -10 Pa at 214.2 ℃ (solid); 100 Pa at -206.8 ℃ (solid); 1 kPa at -197 ℃ (solid); 10 kPa at -183.6 ℃ (solid); 100 kPa at -161.7 ℃;Burns with a pale, faintly luminous flame; air containing more than 14% methane burns without noise;Practically inert toward sulfuric acid, nitric acid, alkalies, and salts but reacts with chlorine and bromine in light (explosively in direct sunlight);Liquid water interfacial tension: 50 dynes/cm = 0.050 N/m at -161 ℃; Ratio of specific heats of vapor: 1.306;Enthalpy of fusion: 0.94 kJ/mol;Dipole moment: 0;Enthalpy of formation: -74.6 kJ/mol at 298.15 K;Henry's Law constant = 0.658 atm-cu m/mol at 25 ℃ (est);Hydroxyl radical reaction rate constant: 6.86X10-15 cu cm/molecule sec at 25 ℃
Vapor Density
0.55 (NTP, 1992) (Relative to Air);0.554 at 0 ℃ (Air = 1);Relative vapor density (air = 1): 0.6
Vapor Pressure
258574 mm Hg at 100 °F ; 760 mm Hg at -258.7° F (NTP, 1992);4.66e+05 mmHg;4.66X10+5 mm Hg at 25 ℃
Autoignition Temperature
999 °F (USCG, 1999);1004 °F (USCG, 1999);999 °F (537 ℃);537 ℃
Log P
log Kow = 1.09;1.09;1.09
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