Hazardous and Noxious Substances Spill Incidents

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On this database it is collected information on the fate and weathering of hazardous and noxious substances (HNS) accidentally spilt at the sea around the world. It gathers and systematizes existing information to assist stakeholders involved in spill preparedness and response, and builds return of experience datasheets for the chemicals involved. It will facilitate the incorporation of lessons from past incidents on the decision process to improve preparedness.

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Albion II





HNS Spilt

Calcium carbideSolid


Amount Spilt (T)114000

CAS Number75-20-7


Physical Behaviour (SEBC code)


Pollution Category (MARPOL Annex 2)


Class according to IMDG code


Subsidiary Risk Class according to IMDG code

Classification as Marine Pollutant


HNS Classification (2010 HNS Convention)

Fate and weathering facts observed/reported

Calcium carbide is a solid (i.e. powder or lumps) which sinks, spontaneous and violently reacting with water and forming acetylene, a highly flammable and explosive gas (10 kg of calcium carbide gives off 3 to 4 m³ of acetylene). The shipwreck lies 120 m deep. Research suggests that the barrels would be unable to resist the pressure at such depth. It is therefore highly likely that the metal has been pierced and that water has infiltrated into the barrels and gas has been released. The risk of calcium carbide-filled barrels being caught in the nets of passing fishing boats, which would mean the release of inflammable gas when brought to the surface, is an unlikely hypothesis. However, it cannot be totally ruled out and ships are advised to be extremely carefully when trawling near the wreck.

Material Safety Data Sheets (MSDS)