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Dealing with hazardous substances Incidences, courses of events and causes of a chemical accident (GDR) and its consequences for the environment and ecology. English. Hoechst Corporation. The hazardous incident of February 22nd 1993. A Chronological List of Incidents at Hoechst. English.

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  1. Dealing with hazardous substances Incidences, courses of events and causes of a chemical accident (GDR) and its consequences for the environment and ecology English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  2. Hoechst Corporation The hazardous incident of February 22nd 1993 A Chronological List of Incidents at Hoechst English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  3. A Hazardous Incident at the Hoechst Corporation Date ? On February 22nd 1993 Time ? at 4.14 a.m. Where ? in Frankfurt-Griesheim Firm ? Hoechst Corporation What happened ? Sticky, yellow precipitation escaped from a safety valve that then covered over 360,000 m² of the neighbouring area like a yellow carpet. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  4. Source At what ? • while mixing ortho-nitroanisole • the paddle mixer was switched on too late • the plant was unsupervised for two hours. Mistake ? Consequence ? fast reaktion overheating increased pressure (from 8 bars to 16 bars) Activation of the safety valve Emission of the toxic gases into the surrounding area English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  5. Effects and consequences The yellow toxic carpet covered houses, cars and trees. Schools and nursery schools had to be closed. Many inhabitants complained about burning eyes, illness, vomiting and skin alterations. If children swallow this substance it can be fatal. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  6. Measures to contain the damages the affected residential areas were evacuated contaminated soil was replaced English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  7. roads were de-contaminated English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  8. Composition of the yellow precipitation: Ingredienzes: Ortho-nitroanisole Methanol Products of the reaktion: Ortho-chloronitrobenzene Chloro-anisidine Chloro- analines Chloro-aromates „imflammable and caustic“ English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  9. Ortho-Nitroanisole (Methoxy-2-nitrobenzene) O CH3 Toxic NO2 hazardous to health 2-(NO2)C6H4O=CH3 Properties and safety references English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  10. Properties: • a yellow, odourless, liquid, carcogenic and hazardous to health • WPC 3 Safety references: • it must not come into contact with the canalisation, waterways or soil • it can cause health problems, if swallowed English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  11. Ortho-Chloronitrobenzene Cl Toxic • hazardous for the environment NO2 C6H4ClNO2 Properties and safety references English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  12. Properties: • yellow crystals • toxic • hazardous for the environment • WPC 2 • Solubility: 0.59g/l (20°C) Safety references: • it must not come into contact with the canalisation, waterways or soil • don‘t inhale, swallow or let it contact with your skin Symptoms English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  13. This symptoms can occur after poisoning: Coughing inflammation of mucus membranes breathing difficulties headaches vomiting dizziness and fatigue In addition it is toxic to the liver and kidneys. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  14. Methanol (Methylalcohol, carbinol) H I H – C – O – H I H Toxic Highly inflammable CH3OH Properties and safety references English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  15. Properties: • liquid, colourless • characteristic oder • toxic • highly inflammable • WPC 1 Safety references: • don‘t let it contact with your skin • if taken orally it can lead to poisoning and even cause blindness Methanol is toxic for your nerves. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  16. Anisidine (2-Aminoanosol, 2-Methoxyaniline) O CH3 Toxic NH2 2-(CH3O)C6H4NH2 Properties and safety references English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  17. Properties: • liquid, yellow • WPC 3 • toxic • carcogenic • hazardous to reproduction • Solubility : ~15g/L (25°C) Safety references: • don‘t inhale, swallow or let it comes into contact with your skin • it can alter hereditary genes Symptoms English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  18. This symptoms can occur after poisoning: skin resorption preventing the transport of oxygene a blue colouring of the blood (cyanosis) Methamo-globin-amine withheadaches breathing difficulties and cramps heart rhythm disturbances lower blood pressure Irreversible damage is possible English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  19. Chloro-aniline (1-Amino-2-chlorobenzene) NH2 Toxic • hazardous for the environment Cl 2-(Cl)C6H4NH2 Properties and safety references English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  20. Properties: • liquid, ranging in colour from colourless to yellow • WPC 2 • hazardous for the environment • toxic Safety references: • it must not come into contact with the canalisation, waterways or soil • don‘t inhale, swallow or let it comes into contact with your skin Symptoms English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  21. This symptoms can occur after poisoning: skin resorption preventing the transport of oxygene a blue colouring of the blood (cyanosis) Methamo-globin-amine withheadaches breathing difficulties and cramps heart rhythm disturbances lower blood pressure Irreversible damage is possible English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  22. A Chronological List of Incidents at Hoechst From 1986 to 2000 there happened 16 incidents. Here are 5 examples: January 1991 July 1991 December 1991 May 1992 June 1998 English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  23. January1991900kg of sulphuric acid flows from a cooling water canal into the river Main due to a “handling error”. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  24. July 1991 Due to a “faulty measurement device” used in the production of pesticides apparently harmless substances from the plant are emitted into the atmosphere. This incident is kept secret at first. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  25. December 1991 In the district of Sossenheim emissions from one of Hoechst‘s chimneys led to a 1cm thick white layer. The so-called industrial snow was in fact frozen aerosols. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  26. May 1992 A loose valve on a tank wagon led to chlorine gas being emitted that caused inhabitants in the surrounding area to suffer from vomitting and respiratory problems. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

  27. June 1998 During the manufacture of the pain reliever “Novalgin“ 1.5 tons of a by-product overflowed and flowed into the Main. English Engelhardt,Y; Engelhardt;Ya; Merschmeier, S

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