Methane https://midsis.rempec.org/en/find-chemical/methane https://midsis.rempec.org/@@site-logo/logo_rempec_128x117.png Methane CAS Number: 72-82-8 Also known as: Methyl Hydride, Marsh Gas, Methane Information on chemical Information on chemical External resources CAMEO Chemical Database WISER Substance List Description CAS number 72-82-8 Formula CH4 Physical chemical data Physical State (25°C) Gas Molar mass (g/mol) 16.043 Solubility (g/L) 22 [g/L] at a temperature of 25°C and salinity of 0‰ Boiling Point (°C) -161 Melting Point (°C) -183 Critical temperature (°C) 190.56 Critical pressure (Pa) 4599000 Surface tension (mN/m) 14 [mN/m] at a temperature of -161°C Interfacial tension (mN/m) 50 [mN/m] at a temperature of -161°C and salinity of 0‰ Vapour pressure at 70% of critical temperature (Pa) 447990 Flash Point (Pensky-Martens closed cup) (°C) -188 Lower explosivity limit (LEL) (volume %) 5.3 Upper explosivity limit (UEL) (volume %) 14 Henry's constant (mol/(m³·Pa)) 68901 Behaviour at sea Log kow 1.09 Log koc 0.6 Aqueous photolysis (Half-life) Not photolysable Biodegradation in estuary environment (Half-life) (days) Not hydrolysable Bioconcentration factor (BCF) 2 Additional data MARPOL pollution category Category Description Other Substances Substances which have been evaluated and found to fall outside Category X, Y or Z because they are considered to present no harm to marine resources, human health, amenities or other legitimate uses of the sea when discharged into the sea from tank cleaning of deballasting operations. The discharge of bilge or ballast water or other residues or mixtures containing these substances are not subject to any requirements of MARPOL Annex II. Transportation data Reactivity data GESAMP Hazard profile Interference with coastal amenities (E2) G - Gas Human toxicity threshold Hazard statements Physical H220 Extremely flammable gas. Ecotoxicity Lowest median lethal concentration (LC50) on crustacean (mg/l) 46.6 Lowest median lethal concentration (LC50) on fishes (mg/l) 24.11 Incident reports Incident reports No incident reports available Emergency Response Guidebook Emergency Response Guidebook No guides available At sea emergency guide At sea emergency guide No guides available Decision trees Decision trees Flammable graph TB;2e46dd28357943a8940d2095ea166a1d("Explosive/Flammable<br />substances");click 2e46dd28357943a8940d2095ea166a1d window.callbackNodeClikFunction "Explosive/Flammable<br />substances"; × No decision trees available No additional data
Methane https://midsis.rempec.org/en/find-chemical/methane https://midsis.rempec.org/@@site-logo/logo_rempec_128x117.png Methane CAS Number: 72-82-8 Also known as: Methyl Hydride, Marsh Gas, Methane Information on chemical Information on chemical External resources CAMEO Chemical Database WISER Substance List Description CAS number 72-82-8 Formula CH4 Physical chemical data Physical State (25°C) Gas Molar mass (g/mol) 16.043 Solubility (g/L) 22 [g/L] at a temperature of 25°C and salinity of 0‰ Boiling Point (°C) -161 Melting Point (°C) -183 Critical temperature (°C) 190.56 Critical pressure (Pa) 4599000 Surface tension (mN/m) 14 [mN/m] at a temperature of -161°C Interfacial tension (mN/m) 50 [mN/m] at a temperature of -161°C and salinity of 0‰ Vapour pressure at 70% of critical temperature (Pa) 447990 Flash Point (Pensky-Martens closed cup) (°C) -188 Lower explosivity limit (LEL) (volume %) 5.3 Upper explosivity limit (UEL) (volume %) 14 Henry's constant (mol/(m³·Pa)) 68901 Behaviour at sea Log kow 1.09 Log koc 0.6 Aqueous photolysis (Half-life) Not photolysable Biodegradation in estuary environment (Half-life) (days) Not hydrolysable Bioconcentration factor (BCF) 2 Additional data MARPOL pollution category Category Description Other Substances Substances which have been evaluated and found to fall outside Category X, Y or Z because they are considered to present no harm to marine resources, human health, amenities or other legitimate uses of the sea when discharged into the sea from tank cleaning of deballasting operations. The discharge of bilge or ballast water or other residues or mixtures containing these substances are not subject to any requirements of MARPOL Annex II. Transportation data Reactivity data GESAMP Hazard profile Interference with coastal amenities (E2) G - Gas Human toxicity threshold Hazard statements Physical H220 Extremely flammable gas. Ecotoxicity Lowest median lethal concentration (LC50) on crustacean (mg/l) 46.6 Lowest median lethal concentration (LC50) on fishes (mg/l) 24.11 Incident reports Incident reports No incident reports available Emergency Response Guidebook Emergency Response Guidebook No guides available At sea emergency guide At sea emergency guide No guides available Decision trees Decision trees Flammable graph TB;2e46dd28357943a8940d2095ea166a1d("Explosive/Flammable<br />substances");click 2e46dd28357943a8940d2095ea166a1d window.callbackNodeClikFunction "Explosive/Flammable<br />substances"; × No decision trees available No additional data