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Sheet Steel Components CAS No. % Weight Exposure Limits ACGIH TLV m Im') OSHA PEL (mg/ml) Sodium ritd(e 763240-0 <0.01 10 Oxide Dust Zinc (galvanized) 7440 66-6 0 A - 10 5 OxideFume 5 Oxide Fume 10 Oxide Fume STEL 10 Oxide Dust NOTE : No Permissible exposure limits ( PEL) or threshold limit values (TLV) exist for steel over all . The above listing is a summary of elements used in alloying Modesto Steel products . Various grades of steel will contain different combinations of these elements and/or trace materials . Exact specifications may be found by calling the division and asking for a specification sheet. 4 , FIRST AID MEASURES Eye Contact- In case of overexposure to dusts or fumes , immediately flush eyes with plenty of water for at least 15 minutes occasionally lifting the eye lids . Get medical attention if irritation persists . Thermal burns should be treated as medical emergencies . Skin Contact - In case of overexposure to dusts or particulates , wash with soap and plenty of water, Get medical attention if irritation develops or persists . if thermal burn occurs , flush area with cold water and get immediate medical attention . Inhalation - In case of overexposure to dusts or fumes , remove to fresh air. Get immediate medical attention if symptoms described in this SDS develop . Ingestion - Not considered an ingestion hazard . However, if excessive amounts of dust or particulates are swallowed , treat symptomatically and supportively. Get medical attention . Notes to Physician - Inhalation of metal fume or metal oxides may produce an acute febrile state , with cough , chills , weakness , and general malaise , nausea , vomiting , muscle cramps , and remarkable leukocytosis . Treatment is symptomatic, and condition is self limited in 24-48 hours . Chronic exposure to dusts may result in pneumoconiosis of mixed type . 6 . FIRE FIGHTING MEASURES Flash Point ( Method ) - Not applicable Flammable Limits ( % volume in air) - Not applicable Auto ignition Temperature - Not applicable Extinguishing Media - For molten metal, use dry powder or sand , For steel dust use or dry sand , water, foam , argon or nitrogen . Special Fire Fighting Procedures - Do not use water on molten metal . Do not use Carbon Dioxide (CO2) . Firefighters should not enter confined spaces without wearing NIOSH /MSHA approved positive pressure breathing apparatus (SCBA) with full face mask and full protective equipment. Unusual Fire or Explosion Hazards - Steel products do not present fire or explosion hazards under normal conditions . Any non -oxidized fine metal particles/ dust generated by grinding , sawing , abrasive blasting , or individual customer processes may produce materials that the customer should test for combustibility and other hazards in accordance with applicable regulations . High concentrations of combustible metallic fines in the air may present an explosion hazard . 6 . ACCIDENTAL RELEASE MEASURES Precautions if Material is Spilled or Released - Emergency response is unlikely unless in the form of combustible dust . Avoid inhalation , eye , or skin contact of dusts by using appropriate precautions outlined in this SDS (see section 8) . Fine turnings and small chips should be swept or vacuumed and placed into appropriate disposable containers . Keep fine dust or powder away from sources of ignition . Scrap should be reclaimed for recycling . Prevent materials from entering drains , sewers , or waterways . Fire and Explosion Hazards - Some customer processes may generate combustible dust that may require specific precautions when cleaning spills or releases of dust . Environmental Precautions . Some grades of steel may contain reportable quantities of alloying elements . See Section 15 for additional information . Waste Disposal Methods - Dispose used or unused product in accordance with applicable Federal , State , and Local regulations . Please recycle. Page 4 of 8