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Graphene, 99%
Catalog Number
ACM1034343980-2
Product Name
Graphene, 99%
Structure
CAS
1034343-98-0
Category
Carbon Nanomaterials
Description
Methane is a colorless odorless gas. It is also known as marsh gas or methyl hydride. It is easily ignited. The vapors are lighter than air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. It is used in making other chemicals and as a constituent of the fuel, natural gas.;Methane is a colorless odorless gas. It is also known as marsh gas or methyl hydride. It is easily ignited. The vapors are lighter than air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. It is used in making other chemicals and as a constituent of the fuel, natural gas.;Methane, refrigerated liquid (cryogenic liquid) is a colorless odorless liquid. Flammable. Water insoluble.;Natural gas, refrigerated liquid (cryogenic liquid) appears as a flammable liquefied gaseous mixture of straight chain hydrocarbons, predominately methane.;Natural gas, [compressed] appears as a flammable gaseous mixture of straight chain hydrocarbons, predominately compressed methane.;GasVapor; Liquid;Liquid;COLOURLESS ODOURLESS COMPRESSED OR LIQUEFIED GAS.
IUPAC Name
methane
Molecular Weight
16.043g/mol
Molecular Formula
CH4;CH4;CH4
Canonical SMILES
C
InChI
InChI=1S/CH4/h1H4
InChI Key
VNWKTOKETHGBQD-UHFFFAOYSA-N
Boiling Point
-258 °F at 760 mm Hg (USCG, 1999);-258.7 °F at 760 mm Hg (NTP, 1992);-161.5 °C;-161.50 °C;-161 °C
Melting Point
-296 °F (USCG, 1999);-296.5 °F (NTP, 1992);-182.4 °C;-182.566 °C;-182.4°C;-183 °C
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 °C/4 °C (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 °C;Slightly soluble in acetone; soluble in ethanol, ethyl ether, benzene, toluene, methanol;0.91 mL in 1 g ether at 20 °C; 0.60 mL in 1 g ethyl alcohol at 20 °C;0.022 mg/mL at 25 °C;Solubility in water, ml/100ml at 20 °C: 3.3
Color/Form
Colorless gas
Complexity
0
Covalently-Bonded Unit Count
1
EC Number
200-812-7;232-343-9
Exact Mass
16.0313g/mol
Formal Charge
0
Heat of Vaporization
8.19 kJ/mol
Heavy Atom Count
1
ICSC Number
0291
Log P
log Kow = 1.09;1.09;1.09
Monoisotopic Mass
16.0313g/mol
Odor
Odorless;Weak odor
Other Experimental
VP: 1 Pa at -220 °C (solid); -10 Pa at 214.2 °C (solid); 100 Pa at -206.8 °C (solid); 1 kPa at -197 °C (solid); 10 kPa at -183.6 °C (solid); 100 kPa at -161.7 °C;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 °C; 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 °C (est);Hydroxyl radical reaction rate constant: 6.86X10-15 cu cm/molecule sec at 25 °C
Rotatable Bond Count
0
RTECS Number
PA1490000
UNII
2P3VWU3H10;OP0UW79H66
UN Number
1972;1971;1972;1972;1971;1971;1971;1971
Vapor Density
0.55 (NTP, 1992) (Relative to Air);0.554 at 0 °C (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 °C
Viscosity
34.8 uP at -181.6 °C; 76.0 uP at -78.5 °C; 102.6 uP at 0 °C; 108.7 uP at 20 °C; 133.1 uP at 100.0 °C; 160.5 uP at 200.5 °C; 181.3 uP at 284 °C; 202.6 uP at 380 °C; 226.4 uP at 499 °C
XLogP3
0.6
MSDS
COA
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