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Improving Member States preparedness to face an HNS pollution of the Marine System (HNS-MS)

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Butane

Description Top

CAS number 106-97-8
Chemical formula C4H10
Standard European Behaviour Classification (SEBC) Gas (G)
GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
NI NI NI NI NI NI NI NI NI NI G NI

Marine pollution Classification (MARPOL Annex II)
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.

Alternate names for this chemical
Methylethylmethane
Butane


Physico-chemical properties Top

Chemical formula C4H10
Molar mass 58.124 [g/mol]
State Gas at 25°C and 1 atm
Fusion temperature -138 [°C]
Boiling temperature -0.5 [°C]
Critical temperature 425.13 [°C]
Density
573 [Kg/m³] at a temperature of 25°C
Surface tension
14.7 [mN/m] at a temperature of 0°C
Interfacial tension
65 [mN/m] at a temperature of 22°C and salinity of 0‰
Hydrosolubility
61 [mg/l] at a temperature of 25°C and salinity of 0‰
Vapour pressure
243680 [Pa] at a temperature of 25°C
Critical pressure 3796000 [Pa]
Vapour pressure at 70% of critical temperature 239070 [Pa]
Vapour density 2.046
Flash point (Pensky-Martens closed cup) -60 [°C]
Lower explosivity limit (LEL) 1.9 [%]
Upper explosivity limit (UEL) 8.5 [%]
Vaporization enthalpy
385211 [J/Kg] at a temperature of -0.5°C
Combustion enthalpy 45385000 [J/Kg]
Henry's constant 96258.75 [mol/(m³·Pa)]


Behaviour Top

Log Kow 2.89
Log Koc 1.6
Hydrolysis (Half-life) Not hydrolysable
Aqueous photolysis (Half-life) Not photolysable
Standard European Behaviour Classification (SEBC) Gas (G)
Bioconcentration factor (BCF) 40


Ecotoxicity Top

Lowest median lethal concentration (LC50) on crustacean 69.43 [mg/l]
Lowest median lethal concentration (LC50) on fishes 49.9 [mg/l]


Hazards Top

Flammable
Compressed Gas

Danger

Hazards statements
Physical
H220
Extremely flammable gas.


GESAMP Top

GESAMP Hazard profile
A1 A2 B1 B2 C1 C2 C3 D1 D2 D3 E1 E2 E3
NI NI NI NI NI NI NI NI NI NI G NI

A1: Bioaccumulation
Rating Description
NI No Information
A1a:
Rating Description
NI No Information
A1b:
Rating Description
NI No Information
A2: Biodegradation
Rating Description
NI No Information
B1: Acute aquatic toxicity
Rating Description
NI No Information
B2: Chronic aquatic toxicity
Rating Description
NI No Information
C1: Acute oral toxicity
Rating Description
NI No Information
C2: Acute dermal toxicity (skin contact)
Rating Description
NI No Information
C3: Acute inhalation toxicity
Rating Description
NI No Information
D1: Skin irritation or corrosion
Rating Description
NI No Information
D2: Eye irritation
Rating Description
NI No Information
D3: Long-term health effects
Notation Hazard endpoint Description GHS category
No Information
E1: Tainting of seafood
Rating Description
NI No Information
E2: Behaviour of chemicals in the marine environment
Rating Description
G Gas
E3: Interference with the use of coastal amenities
Rating Description
NI No Information

GHS Security Information

Flammable
Compressed Gas

Danger

  About the project

HNS-MS is a decision-support tool that Belgian and French maritime authorities as well as coastguard stations can activate in order to forecast the drift, fate and behavior of acute marine pollution by Harmful Noxious Substances (HNS) accidentally released in the marine system.

  Contact us

Web: https://www.hns-ms.eu/

Tel : +32 (0)2 773-2102

Mail : hns-ms@naturalsciences.be

Copyright © 2015–2019 HNS-MS Consortium

EU flagHNS-MS has been funded by DG-ECHO under agreement ECHO/SUB/2014/693705 and runs from 1 January 2015 to 31 March 2017.