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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HNS Spilt

Zinc SulfideSolid


Amount Spilt (T)1400

CAS Number1314-98-3


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

Pumping operation appeared to be more difficult than first imagined. The cargo was very heavy and kept being sucked back down. Moreover 1,000 tonnes had already been lost. The response teams eventually managed to pump out 1,900 tonnes of the cargo, which was sent to Immingham (England). The vessel was then lying 14 metres below water level. She was no longer a hazard for passing vessels and the remaining 400 tonnes of zinc sulphide were considered a “negligible environmental threat”. It was then decided to leave the wreck in place. However samples of fish and shellfish were taken for analysis and the environmental impact continued to be assessed. There were 5 fish farms located in the vicinity of the wreck.

Material Safety Data Sheets (MSDS)