UNITED REFRACTORIES INC. MSDS for DENSPAK REV. 4-09

1

MATERIAL SAFETY DATA SHEET

1 CHEMICAL PRODUCT AND COMPANY IDENTIFICATION

COMMON NAME: DENSPAK -3020 MSDS FORMULA: MIXTURE SUPPLIER: UNITED REFRACTORIES INC. ADDRESS: 1929 LARCHMONT AVE. NE WARREN OHIO 44483 PHONE: (330) 372-3716 EMERGENCY PHONE : (330) 372-3716

2 INGREDIENTS: COMPOSITION % INGREDIENT WEIGHT PEL-OSHA TLV-ACGIH chromite 85 1mg/m3 for chromium 1mg/m3 for chromium CAS: 1308-31-2 metal 0.1 mg/m3 for metal 0.1 mg/m3 for chrom.(VI) comp.(ceil.) chrom.(VI) comp.(ceil) olivine 5mg/m3 10mg/m3 CAS: 1317-71-1 15 sodium silicate 2 2mg/m3 2mg/m3 CAS: 1344-09-8 quartz 2 10mg/m3/(%SiO2+2) 0.05mg/m3 CAS:14808-60-7 (respirable) (respirable)

3 PHYSICAL AND CHEMICAL PROPERTIES APPEARANCE: black wet granular ODOR: no odor WEIGHT PER GALLON: n/a BOILING POINT: n/a SOLUBILITY IN WATER: negligible SPECIFIC GRAVITY: n/a PH: neutral % VOLATILE: 0

UNITED REFRACTORIES INC. MSDS for DENSPAK REV. 4-09

2

4 FIRE AND EXPLOSION DATA FLAMMABLE PROPERTIES FLASH POINT: Will not burn NFPA HAZARD CLASSIFICATION: HEALTH: 1 FLAMMABILITY: 0 REACTIVITY: 0 FLAMMABLE LIMITS: LEL: not applicable UEL: not applicable EXTINGUISHING MEDIA: Use any media appropriate for surrounding fire FIRE AND EXPLOSION HAZARDS: Non-Flammable and non-combustible. HAZARDOUS DECOMPOSITION PRODUCTS: Thermal decomposition will produce metal oxides, and other oxidation products. FIRE FIGHTING INSTRUCTIONS: Firefighters should wear a NIOSH/MSHA approved full-facepiece self contained breathing apparatus in positive pressure mode and full turnout gear.

5 REACTIVITY DATA STABILITY: Stable under normal conditions and use INCOMPATIBILITY: Sodium silicate is alkaline and gels when mixed with acids. HAZARDOUS DECOMPOSITION PRODUCTS: Thermal decomposition products will produce metal oxides and other oxidation products. HAZARDOUS POLYMERIZATION: Will not occur.

6 HEALTH HAZARD INFORMATION EYE: Contact may cause mechanical irritation. SKIN: May be abrasive to the skin. INGESTION: Relatively non-toxic via ingestion. INHALATION: Inhalation of dusts may irritate the nose and throat. SIGNS AND SYMPTOMS: Symptoms of silicosis may include phlegm, coughing and decreased pulmonary capacity. MEDICAL CONDITIONS AGGRAVATED BY EXPOSURE: Long term exposure to dust can exacerbate pre-existing respiratory disease. CHRONIC: Repeated exposure to quartz in dusts over a long period of time can cause progressive fibrotic lung disease TARGET ORGANS: Respiratory system, skin, eyes. CARCINOGENICITY: (respirable silica) NTP: K IARC: 1 OSHA: YES The National Toxicology Program (NTP) classifies quartz as Known to be a carcinogen. IARC classifies inhaled crystalline silica in the form of quartz or cristobalite from occupational sources as carcinogenic to humans (Group 1). FIRST AID MEASURES EYES: Flush eyes with large amounts of water for 15 minutes. If irritation persists, seek medical attention. INHALATION: Remove to fresh air. SKIN: Wash with soap and water. If exposure is prolonged or extensive or if irritation persists, seek medical attention.

UNITED REFRACTORIES INC. MSDS for DENSPAK REV. 4-09

3

INGESTION: None indicated

7 SPILL, LEAK AND DISPOSAL PROCEDURES During removal of dry or used material, care should be taken to avoid causing dust to become airborne. When airborne dust is present, wear a respirator adequate for the level of dust exposure. DISPOSAL CONSIDERATIONS: This product is generally suitable for landfill disposal. If this product has been altered or contaminated with other hazardous materials, appropriate waste analysis may be necessary to determine proper disposal method. A qualified environmental professional should determine waste characterization, disposal, and treatment methods for this material in accordance with applicable Federal, State and local regulations and requirements.

8 EXPOSURE CONTROLS AND PERSONAL PROTECTION RESPIRATORY: Under normal conditions, below acceptable exposure guidelines, none is required. Appropriate respirator selection depends on the magnitude of exposure. SKIN: Protective gloves EYE: Splash proof goggles or face shield. ENGINEERING CONTROLS: Local exhaust ventilation used in combination with general ventilation as necessary to control air contaminants to at or below PEL.

9 SPECIAL PRECAUTIONS TRANSPORTATION NAME: Not regulated by DOT. CLASS/DIVISION: n/a PACKING GROUP: n/a I.D. No. n/a LABELS: n/a OSHA HAZARD COMMUNICATION RULE, 29CFR 1910.1200: This product is hazardous under the criteria of this rule. CERCLA/SUPERFUND,40CFR 117,302: N/A SARA 313 REPORTING REQUIREMENTS: NONE SARA HAZARD CATEGORY: This product has been reviewed according to the EPA Hazard Categories promulgates under Sections 311 and 312 of the Superfund Amendment and Reauthorization Act of 1986 (SARA Title 3) and is considered, under applicable definitions, to meet the following categories: Acute Health Hazard Chronic Health Hazard (dust only)

DISCLAIMER The data and recommendations presented herein are based upon a review of United Refractories files, published MSDS and standard toxicological reference sources. United Refractories makes no guarantee or warranty, either express or implied as to the accuracy of completeness of data and recommendations.