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Oxbow Calcining LLC

MATERIAL SAFETY DATA SHEET

SECTION I ­ IDENTIFICATION

EMERGENCY PHONE 281 -907-9441 COMPANY NAME and ADDRESS Oxbow Calcining LLC 1450 Lake Robbins Dr. Suite 500 The Woodlands, TX 77380 QUESTIONS CONCERNING THE MSDS CAN BE DIRECTED TO: Corporate Technical Manager Telephone 281 ­ 907-9441 EFFECTIVE 3/16/12 SUPERSEDES 10/25/10 PRODUCT NAME Calcined Petroleum Coke TRADE NAME AND SYNONYMS Calcined Petroleum Coke CHEMICAL NAME AND SYNONYMS Calcined Petroleum Coke NFPA Rating 0 Least, 1 Slight, 2 Moderate, 3 High, 4 Extreme Health: 0 Flammability: 1 Reactivity: 0 CAS NO.

64743 ­ 05 -01

SECTION II ­ HEALTH HAZARD DATA

MATERIAL INFORMATION Calcined petroleum coke is not considered to be hazardous as defined by OSHA's Hazard Communication Standard 29 CFR 1910.1200. Calcined petroleum coke is considered to be an inert material. Calcined Petroleum Coke EXPOSURE LIMITS OSHA: PEL = 15 mg/m3 as total dust; 5 mg/m3 as respirable fraction ACGIH: TLV = 10 mg/m3 as total dust; 3 mg/m3 as respirable fraction CAS NO. 64743 ­ 05 - 01

SYMPTOMS OF OVEREXPOSURE Route(s) of Entry: Inhalation, skin, and eye contact. This product is nontoxic. The "nuisance dust" exposure values that are listed apply to any inert substance capable of producing airborne particulates. Excessive concentrations of calcined petroleum coke may reduce visibility, cause unpleasant deposits in the eye, ears, and nasal passages, or irritate the skin or mucous membranes by mechanical means. However, normal workplace exposure has not been determined to cause a significant health effect. Calcined petroleum coke, as with many petroleum products, may cause minor skin, eye, or lung irritation, but good hygienic practices can minimize these effects. See Section VIII for additional health data. Is product listed as Carcinogen or Potential Carcinogen by: NTP? RECOMMENDED FIRST AID TREATMENT Inhalation: Remove to fresh air. If breathing has stopped, administer artificial respiration and supply oxygen. If problems persist, seek medical attention. Eye Contact: In case of contact, immediately flush eyes with plenty of water until irritation subsides. If irritation persists, seek medical attention. Skin Contact: Normal skin contact is not known to cause a significant health effect. Particles should be periodically washed off of skin with soap and water. Ingestion: If swallowed, do not induce vomiting. Immediately give water. Never give anything by mouth to an unconscious person. If symptoms develop, seek medical attention.

No IARC?

No OSHA?

No

MSDS ­ Calcined Petroleum Coke

SECTION III ­ PHYSICAL DATA

BOILING POINT (O F) Solid MELTING POINT (o F) Nonmelting solid SOLUBILITY IN WATER Not Soluble PERCENT VOLATILE BY VOLUME 0.3 Max BULK DENSITY (LB/FT3) 50 to 55 VAPOR DENSITY (Air = 1) Not Applicable ODOR None APPEARANCE Dark gray to black

SECTION IV ­ FIRE AND EXPLOSION HAZARD DATA

FLASH POINT (Method used) No Data Available AUTO IGNITION TEMPERATURE See Unusual Fire and Explosion Hazards Section below FLAMMABLE LIMITS % BY VOLUME LEL UEL No Data Available No Data Available

EXTINGUISHING MEDIA Water Fog, Dry Chemical, Foam, or Carbon Dioxide SPECIAL FIRE FIGHTING PROCEDURES Most reported coke fires have occurred when produced calcined coke is inadequately cooled and stored in a manner that allows the movement of air through the coke bed. Coke should be well quenched or cooled before it is stored in a pile out of doors or placed in silos or bins. Storage should be arranged to prevent movement of air through the coke. Should a fire occur, its locations and extent should be determined as quickly as possible. The best procedure is to dig out and remove the coke in the heated zone. The hot coke should be drenched with water as it is exposed. Because of the possibility of steam explosion, great care should be used introducing water into confined storage such as a silo. Whenever possible, bulk material in silos should be removed and material drenched in an open area. Products of combustion may contain carbon monoxide, carbon dioxide and sulfur dioxide. Do not enter permitted confined space or enclosed area without proper PPE. There is no dust explosion hazard from calcined petroleum coke. UNUSUAL FIRE AND EXPLOSION HAZARDS May burn if exposed to temperatures greater 1290oF (700oC).

SECTION V ­ REACTIVITY DATA

STABILITY Unstable Stable X HAZARDOUS POLYMERIZATION May Occur Will Not Occur X

INCOMPATIBILITY (Materials to avoid) Strong oxidizing acids; other strong oxidants HAZARDOUS DECOMPOSITIONS PRODUCTS CO, CO2, SO2 CONDITIONS TO AVOID Extreme heat and open flames. May burn if exposed to temperatures above 1290oF (700oC).

MSDS ­ Calcined Petroleum Coke

SECTION VI ­ SPILL OR LEAK PROCEDURES

STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED Material is not toxic and can be picked up by sweeping, shoveling, or vacuuming. Provisions should be made to prevent washing, draining, or directing material to storm or sanitary sewers. WASTE DISPOSAL METHOD All Federal, State, and Local regulations regarding health and pollution must be followed for disposal of calcined petroleum coke.

SECTION VII ­ SPECIAL PROTECTION INFORMATION

RESPIRATORY PROTECTION (Specify type) Select appropriate NIOSH-approved protection where necessary to maintain exposures below the acceptable limits in the Health Hazard Section. Proper respiratory selection should be determined by adequately trained personnel and based on the contaminant(s), the degree of potential exposure and published respirator protection factors. VENTILATION Dust should be controlled at point of operation. PROTECTIVE GLOVES None EYE PROTECTION None required. Recommend using dust goggles in areas of high dust concentrations. OTHER PROTECTIVE EQUIPMENT None

SECTION VIII ­ ADDITIONAL HEALTH DATA

Petroleum coke was found to be non-carcinogenic in mice in chronic skin painting studies with coke dust. Petroleum coke was found not to be carcinogenic in monkeys and rats in a two-year inhalation study at concentrations up to 30 mg/m3. Chronic inflammatory changes similar to those produced by non-specific respiratory irritants were observed in some rats at the highest exposure level. Petroleum coke was found not to be mutagenic in a rat in vivo Bone Marrow Cytogenetic test, a mouse Lymphoma assay, and an Ames Mutagenicity assay.

SECTION IX ­ SHIPPING INFORMATION

DEPARTMENT OF TRANSPORATION (DOT) Proper Shipping Name Hazard Class Dot Label(s) DOT Placard : : : : Regulated by water mode only, when temperature exceeds 130oF, Petroleum coke, calcined. ORM (other regulated material) ­ C None None

INTERNATIONAL MARITIME ORGANIZATION (IMO) Proper Shipping Name : Petroleum coke, calcined. Not regulated by IMO Special Information : Must not be loaded in cargo vessels when temperatures exceed 225oF. (46 CFR 148.04-17)

MSDS ­ Calcined Petroleum Coke

The information and recommendations contained herein are, to the best of Oxbow Carbon and Minerals (OCM) knowledge and belief, accurate and reliable as of the date issued. OCM does not warrant or guarantee their accuracy or reliability, and OCM shall not be liable for any loss or damage arising out of the use thereof. The information and recommendations are offered for the user's consideration and examination, and it is the user's responsibility to satisfy itself that they are suitable and complete for its particular use. If buyer repackages this product, legal counsel should be consulted to insure proper health, safety and other necessary information is included on the container.

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