Rolling Mill Scale

Potential health effects

EYES: Dust particles may cause mechanical irritation injury. SKIN: Dust or powder may irrate the skin. INGESTION: Not anticipated under normal working conditions. INHALATION: High concentrations of air-borne dusts may be irritating to mucous membrances of the nose and upper respiratory tract.

Medical Conditions Generally Aggravated by Exposure

Dust may aggrevate pre- existing eye, skin, throat, and lung conditions.. CARCINOGENICITY OSHA: No NTP: No IARC: No SECTION 4: FIRE-FIGHTING MEASURES FLAMMABLE LIMITS IN AIR: Non-Flammable FLASH POINT: Not Applicable AUTOIGNITION TEMPERATURE: Not Applicable NFPA HAZARD CLASSIFICATION HEALTH: 1 FLAMMABILITY: 0 REACTIVITY: 0 EXTINGUISHING MEDIA: Not Applicable SPECIAL FIRE FIGHTING PROCEDURES: Not Applicable – material not combustible. UNUSUAL FIRE AND EXPLOSION HAZARDS: Not Applicable – material not combustible. HAZARDOUS DECOMPOSITION PRODUCTS: No hazardous decomposition products. SECTION 5: HANDLING AND STORAGE HANDLING AND STORAGE: Good housekeeping techniques such as vacuuming should be used to remove dust accumulations and to prevent the generation of airborne dust. Avoid the use of compressed air for removing settled dust; avoiding inhalation of dust and contact with eyes. OTHER PROCEDURES: None SECTION 6: EXPOSURE CONTROLS/PERSONAL PROTECTION VENTILATION: Mechanical general and/or local exhaust ventilation. RESPIRATORY PROTECTION: NIOSH approved particulate respirators. Appropriate respirator selection depends upon type and magnitude of exposure. EYE PROTECTION: Safety glasses with side shields. SKIN PROTECTION: Protective clothing and work gloves. OTHER PROTECTIVE EQUIPMENT: None WORK HYGIENIC PRACTICES: Particulates to minimize dust generation. SECTION 7: PHYSICAL AND CHEMICAL PROPERTIES APPERANCE: Dark gray to black ODOR: Not Applicable – Odorless PHYSICAL STATE: Fine to Coarse Solid Particles pH AS SUPPLIED: 7.6 BOILING POINT: Not Applicable MELTING POINT: Over 2200 degrees Fahrenheit Mill Scale MSDS NO. SR-103 FREEZING POINT: Not Applicable VAPOR PRESSURE (mmHg): Not Applicable VAPOR DENSITY (AIR = 1): Not Applicable SPECIFIC GRAVITY (H2O = 1): 6.23 g/cm3 BULK DENSITY: 120 – 140 LB/FT3 EVAPORATION RATE: Not Applicable SOLUBILITY IN WATER: Not Applicable – Insoluble PERCENT SOLIDS BY WEIGHT: >98% PERCENT VOLATILE: <0.5% SECTION 8: STABILITY AND REACTIVITY STABILITY: Stable CONDITIONS TO AVOID (STABILITY): None INCOMPATIBILITY (MATERIAL TO AVOID): None HAZARDOUS DECOMPOSITION OR BY-PRODUCTS: None HAZARDOUS POLYMERIZATION: Will not occur CONDITIONS TO AVOID: None SECTION 9: DISPOSAL CONSIDERATIONS WASTE DISPOSL METHOD: Dispose of in accordance with applicable state and federal regulations. RCRA HAZARD CLASS: Not Applicable SECTION 10: REGULATORY INFORMATION TSCA: All ingredients are listed on the TSCA inventory or are exempt. OSHA HAZARD COMMUNICATION RULE, 29 CFR 1910.1200: Proper precautions should be taken to avoid any health hazard. A health hazard may occur if limits for air contaminants exceed PEL limits as per 29 CFR 1910.1000. Proper engineering controls and ventilation should be used to prevent air contaminants from exceeding PEL limits. STATE REGULATIONS: INTERNATIONAL REGULATIONS: Mill Scale MSDS NO. SR-103 PHYSICAL DATA Physical State: Iron Oxide Bulk Density: 120 - 140 lbs/ft3 Specific Gravity: 6.23 g/cm3 Appearance and Odor: Dark Gray, Odorless Vapor Pressure: N/A Boiling Point: N/A Vapor Density: N/A Melting Point: Over 2300°F Evaporation Rate: N/A pH: 7.6 FIRE AND EXPLOSION HAZARD DATA Flash Point: N/A Lower Explosive Limit: N/A Auto Ignition Temperature: N/A Upper Explosion Limit: N/A Fire Hazard: Non Flammable Explosion Hazard: N/A Extinguishing Media Special Fire Fighting Hazards: N/A Procedures: N/A REACTIVITY DATA Stability: Stable Incompatibilities (Materials to Avoid): Strong mineral acids eg. HCl, H2SO4, HNO3.