Chemical foams

Production and Shipment. Estimated adiponitrile production capacities in the U.S. in 1992 were about 625 thousand metric tons and worldwide capacity was in excess of lO metric tons. The DOT/IMO classification for adiponitrile is class 6.1 hazard, UN No. 2205. It requires a POISON label on all containers and is in packing group III. Approved materials of constmction for shipping, storage, and associated transportation equipment are carbon steel and type 316 stainless steel. Either centrifugal or positive displacement pumps may be used. Carbon dioxide or chemical-foam fire extinguishers should be used. There are no specifications for commercial adiponitrile. The typical composition is 99.5 wt % adiponitrile. Impurities that may be present depend on the method of manufacture, and thus, vary depending on the source. 

Shipment. The DOT/IMO shipping information is shown in Table 6. Approved materials of constmction for shipping, storage, and associated transportation equipment are lined carbon steel (DOT spec. 105 S 500W) and type 316 stainless steel. Water spray, carbon dioxide, chemical-foam, or dry-chemical fire extinguishers may be used. 

Fire Hazards - Poinr (deg. F).-300-350 OC Flammable limits in Air (%) Not pertinent Fire Extinguishing Agents Water spray, dry chemical, foam or carbon dioxide Fire Extinguishing Agents Not To Be Used Water or foam may cause foaming Special Hazards of Combustion Products Not pertinent Behavior in Fire Not pertinent Ignition Temperature (deg. F) 400 - 700 Electrical Hazard Not pertinent Burning Rate No data. 

Fire Hazards - Flash Point (deg. F) 450 OC Flammable Limits in Air (%) LFL 0.27 at 508° F Fire Extinguishing Agents Dry chemical, foam, carbon dioxide Fire Extinguishing Agents Not to be Used water may be ineffective Special Hazards of Combustion Products Data not available Behavior in Fire Data not available ignition Temperature (deg. F) 755 Electrical Hazard Data not available Burning Rate Data not available. 

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