Frank Michael
1993
Baltic Sea
Europe
Packaged
HNS Spilt
Ammonium dihydrogen phosphateSolid
NH4H2PO4
Amount Spilt (T)1100
CAS Number7722-76-1
-
D
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
-
iv
HNS Classification (2010 HNS Convention)
Fate and weathering facts observed/reported
This non-toxic solid fertilizer started to escape and dissolve in the surrounding water. It is a nutrient for algae and thus a severe oxygen consumer. A discussion started among responsible Swedish agencies regarding the need for actions to salve the cargo. The total yearly emission of similar chemicals into the Baltic Sea amounts to millions of tons, compared to the ship’s cargo content of 1,100 tons. The cargo escaped into the sea over the weeks following that accident, has weather got worse. The time of the year and favourable water turnover in the area reduced the risk for the environment and no mitigation action was taken.
Material Safety Data Sheets (MSDS)
http://www.prochemonline.com/upload/MSDS/1063.Ammonium%20Dihydrogen%20Phosphate.pdf