MSDS: Cement Kiln Dust

Page 1 of 6 Revised: 03/01/11 

## Material Safety Data Sheet

Section 1: PRODUCT AND COMPANY INFORMATION

Product Name(s): Cement Kiln Dust

Product Identifiers: New Lime TM , Cement Kiln Dust (CKD), Kiln Dust, Cement Lime, Raw Mix, Kiln Feed, Baghouse Dust.

Manufacturer: Information Telephone Number: Lafarge North America Inc. 703-480-3600 (9am to 5pm EST) 12018 Sunrise Valley Drive, Suite 500 Emergency Telephone Number:
Reston, VA 20191 1-800-451-8346 (3E Hotline)

Product Use: Kiln dust used in the manufacture of bric ks, mortar, cement, concrete, plasters, paving materials, and other construction applications.

Note: This MSDS covers many types of kiln dust. Individual composition of hazardous constituents will vary between types of kiln dust.

Section 2: COMPOSITION/IN FORMATION ON INGREDIENTS

Component Percent (By Weight) CAS Number OSHA PEL -TWA (mg/m 3 ) ACGIH TLVTWA (mg/m 3 ) LD 50 (mouse, intraperitoneal) LC 50

Portland Cement Kiln Dust 100 68475-76-3 NA NA NA NA

Calcium Carbonate* 10-80 1317-65-3 15 (T); 5 (R) 3 (R); 10 (T) NA NA

Calcium Oxide 5-50 1305-78-8 5 (T) 2 (T) 3059 mg/kg NA

Crystalline Silica 0-10 14808-60-7 [(10) / (%SiO 2 +2)] (R); [(30) / (%SiO 2 +2)] (T) 0.025 (R) NA NA

Magnesium Oxide 0-2 1309-48-4 15 (T) 10 (T) NA NA

Note: Exposure limits for components noted with an * contain no asbestos and <1% crystalline silica

Cement is made from materials mined from the earth and is processed using energy provided by fuels. Trace amounts of chemicals may be detected during chem ical analysis of cement and cement kiln dust. For example, cement kiln dust may contain trace amounts of potassium and sodium sulfate compounds, chromium compounds, nickel compounds, and other trace compounds.

Section 3: HAZARD IDENTIFICATION

Waterproof Gloves Waterproof Boots Eye Protection Respiratory Protection 

## WARNING

Corrosive - Causes severe burns.

Toxic - Harmful by inhalation.

(Contains crystalline silica)

Use proper engineering controls, work

practices, and personal protective equipment to prevent exposure to wet or dry product.

Read MSDS for details.MSDS: Cement Kiln Dust

Page 2 of 6 Revised: 03/01/11 Section 3: HAZARD IDENTIFICATION (continued)

Emergency Overview: Kiln dust is a solid, grey or tan, odorless powder. It is not combustible or explosive. A single, short-term exposure to the dry powder presents little or no hazard. Exposure of sufficient duration to wet kiln dust, or to dry kiln dust on moist areas of the body, can cause serious, potentially irreversible ti ssue (skin, eye, respiratory tract) damage due to chemical (caustic) burns, including third degree burns.

Potential Health Effects:

Eye Contact: Airborne dust may cause immediate or delay ed irritation or inflammation. Eye contact with large amounts of dry powder or with wet kiln dust can cause moderate eye irritation, chemical burns and blindness. Eye exposures require immediate first aid and medical attention to prevent significant damage to the eye.

Skin Contact: Kiln dust may cause dry skin, discomfort, i rritation, severe burns, and dermatitis.

Burns : Exposure of sufficient duration to wet kiln dust, or to dry kiln dust on moist areas of the body, can cause serious, pot entially irreversible damage to skin, eye, respiratory and digestive tracts due to chemical (cau stic) burns, including third degree burns. A skin exposure may be hazardous even if there is no pain or discomfort.

Kiln dust may be shipped or stored hot and can cause thermal burns to unprotected
skin.

Dermatitis : Kiln dust is capable of causing dermatitis by irritation and allergy. Skin affected by dermatitis may include symptoms such as, redness, itching, rash, scaling, and cracking.

Irritant dermatitis is caused by the physica l properties of kiln dust including alkalinity
and abrasion.

Allergic contact dermatitis is caused by sensitization to hexavalent chromium (chromate) present in kiln dust. The reaction can range from a mild rash to severe skin ulcers. Persons already sensitized may react to the first contact with kiln dust. Others may develop allergic dermatitis after y ears of repeated contact with kiln dust.

Inhalation (acute): Breathing dust may cause nose, throat or lung irritation, including choking, depending on the degree of exposure. Inhalation of high levels of dust can cause chemical burns to the nose, throat and lungs.

Inhalation (chronic): Risk of injury depends on duration and level of exposure.

Silicosis : This product contains crystalline silica. Prolonged or repeated inhalation of respirable crystalline silica from this product can cause silicosis, a seriously disabling and fatal lung disease. See Note to Physicians in Section 4 for further information.

Carcinogenicity : Kiln dust is not listed as a carcinogen by IARC or NTP; however, kiln dust contains trace amounts of crystalline silica and hexav alent chromium which are classified by IARC and NTP as known human carcinogens.

Autoimmune Some studies show that exposure to resp irable crystalline silica (without silicosis) or
Disease : that the disease silicosis may be associated with the incr eased incidence of several autoimmune disorders such as scleroderma (t hickening of the skin), systemic lupus erythematosus, rheumatoid arthritis and diseases affecting the kidneys.MSDS: Cement Kiln Dust

Page 3 of 6 Revised: 03/01/11 Section 3: HAZARD IDENTIFICATION (continued)

Tuberculosis : Silicosis increases the risk of tuberculosis.

Renal Disease : Some studies show an increased incidenc e of chronic kidney disease and end-stage renal disease in workers exposed to respirable crystalline silica.

Ingestion: Do not ingest kiln dust. Although ingestion of small quantities of kiln dust is not known to be harmful, large quantities can caus e chemical burns in the mouth, throat, stomach, and digestive tract.

Medical Conditions Individuals with lung disease (e.g. bronchitis, emphysema, COPD, pulmonary Aggravated by Exposure: disease) or sensitivity to hexavalent chromium can be aggravated by exposure.

Section 4: FIRST AID MEASURES

Eye Contact: Rinse eyes thoroughly with water for at least 15 minutes, including under lids, to remove all particles. Seek medical attention for abrasions and burns.

Skin Contact: Wash with cool water and a pH neutral soap or a mild skin detergent. Seek medical attention for rash, burns, irritation, de rmatitis, and prolonged unprotected exposures to wet cement or kiln dust, cement mixtures or liquids from wet cement.

Inhalation: Move person to fresh air. Seek medica l attention for discomfort or if coughing or other symptoms do not subside.

Ingestion: Do not induce vomiting. If conscious, have person drink plenty of water. Seek medical attention or contact poison control center immediately.

Note to Physician: The three types of silicosis include:

• Simple chronic silicosis – which result s from long-term ex posure (more than 20 years) to low amounts of respirable crystalline silica. Nodules of chronic inflammation and scarring provoked by the respirable crystalline silica form in the lungs and chest lymph nodes. This disease may feature breathlessness and may resemble chronic obstructi ve pulmonary disease (COPD).

• Accelerated silicosis – occurs after exposure to larger amounts of respirable crystalline silica over a shorter period of time (5-15 years). Inflammation, scarring, and symptoms progress fast er in accelerated silicosis than in simple silicosis.

• Acute silicosis – results from short-te rm exposure to very large amounts of respirable crystalline silica. The lungs become very inflamed and may fill with fluid, causing severe shortness of breath and low blood oxygen levels.

Progressive massive fibrosis may occur in si mple or accelerated silicosis, but is more common in the accelerated form. Progressive massive fibrosis results from severe scarring and leads to the destruction of normal lung structures.

Section 5: FIREFIGHTING MEASURES

Flashpoint & Method: Non-combustible

General Hazard: Avoid breathing dust. Wet kiln dust and cement is caustic. Firefighting Equipment: Kiln dust poses no firerelated hazard. A SCBA is recommended to limit exposures to combustion products when fighting any fire. Extinguishing Media: Use extinguishing media appropriate for surrounding fire. Combustion Products: None.MSDS: Cement Kiln Dust

Page 4 of 6 Revised: 03/01/11 Section 6: ACCIDENTAL RELEASE MEASURES

General: Place spilled material into a container. Avoid actions that cause the kiln dust to
become airborne. Avoid inhalation of kiln dust and contact with skin. Wear appropriate protective equipment as described in Section 8. Scrape wet kiln dust or cement and place in container. Allow material to dry or solidify before disposal. Do not wash kiln dust down sewage and drainage systems or into bodies of water (e.g. streams).

Waste Disposal Method: Dispose of kiln dust according to Federal, State, Provincial and Local regulations.

Section 7: HANDLING AND STORAGE

General: Keep bulk and bagged kiln dust dry until used. Stack bagged material in a secure manner to prevent falling. Bagged kiln dust and cement is heavy and poses risks such as sprains and strains to the back, arms, shoulders and legs during lifting and mixing. Handle with care and use appropriate control measures.

Engulfment hazard. To prevent burial or suffocation, do not enter a confined space, such as a silo, bin, bulk truck, or other storage container or vess el that stores or contains kiln dust. Kiln dust and cement can buildup or adhere to the walls of a confined space. The kiln dust and cement can release, collapse or fall unexpectedly.

Properly ground all pneumatic conveyance sy stems. The potential exists for staticbuild-up and static discharge when moving cement powders through a plastic, nonconductive, or non-grounded pneumatic c onveyance system. The static discharge may result in damage to equipment and injury to workers.

Usage: Cutting, crushing or grinding hardened cement, concrete or other crystalline silicabearing materials will release respirable crystalline silica. Use all appropriate
measures of dust control or suppression, and Personal Pr otective Equipment (PPE)
described in Section 8 below.

Housekeeping: Avoid actions that cause the kiln dust to become airborne during clean-up such as dry sweeping or using compressed air. Use HEPA vacuum or thoroughly wet with water to clean-up dust. Use PPE described in Section 8 below.

Storage Temperature: Unlimited. Storage Pressure: Unlimited.

Clothing: Promptly remove and launder clothing that is dusty or wet with kiln dust. Thoroughly wash skin after exposure to dust or wet kiln dust.

Section 8: EXPOSURE CONTROLS AND PERSONAL PROTECTION

Engineering Controls: Use local exhaust or general dilution ventilation or other suppression methods to maintain dust levels below exposure limits.

Personal Protective Equipment (PPE):

Respiratory Under ordinary conditions no resp iratory protection is required. Wear a NIOSH Protection: approved respirator that is properly fitted and is in good condition when exposed to dust above exposure limits.

Eye Protection: Wear ANSI approved glasses or safety goggles when handling dust or wet kiln dust to prevent contact with eyes. Wearing contact lenses when using kiln dust, under dusty conditions, is not recommended.MSDS: Cement Kiln Dust

Page 5 of 6 Revised: 03/01/11 Section 8: EXPOSURE CONTROLS A ND PERSONAL PROTECTION (continued)

Skin Protection: Wear gloves, boot covers and prot ective clothing impervious to water to prevent skin contact. Do not rely on barrier creams, in place of impervious gloves. Remove clothing and protective equipment that becomes saturated with wet kiln dust or cement and immediately wash exposed areas.

Section 9: PHYSICAL AN D CHEMICAL PROPERTIES

Physical State: Solid (powder). Evaporation Rate: NA. Appearance: Gray, tan, or white powder. pH (in water): 10 – 13

Odor: None. Boiling Point: >1000 o C Vapor Pressure: NA. Freezing Point: None, solid. Vapor Density: NA. Viscosity: None, solid. Specific Gravity: 2.6-2.8 Solubility in Water: 2-20%

Section 10: STABILITY AND REACTIVITY

Stability: Stable. Keep dry until use. Avoid contact wi th incompatible materials. Kiln dust reacts with water, resulting in a slight release of heat, depending on the amount of lime (Calcium oxide) present.

Incompatibility: Kiln dust and wet cement is alkaline and is incompatible with acids, ammonium salts
and aluminum metal. Kiln dust and cement dissolves in hydrofluoric acid, producing corrosive silicon tetrafluoride gas. Kiln dus t and cement reacts with water to form silicates and calcium hydroxide. Silicates react with powerful oxidizers such as fluorine, boron trifluoride, chlorine trif luoride, manganese trifluoride, and oxygen
difluoride.

Hazardous Polymerization: None. Hazardous Decomposition: None.

Section 11 and 12: TOXICOLOGICAL AND ECOLOGICAL INFORMATION

For questions regarding toxicological and ecological in formation refer to contact information in Section 1.

Section 13: DISPOSAL CONSIDERATIONS

Dispose of waste and containers in compliance with applicabl e Federal, State, Provincial and Local regulations.

Section 14: TRANSPORT INFORMATION

This product is not classified as a Hazardous Ma terial under U.S. DOT or Canadian TDG regulations.

Section 15: REGULATORY INFORMATION

OSHA/MSHA Hazard This product is considered by OSHA/MSHA to be a hazardous chemical and should
Communication: be included in the employer's hazard communication program.

CERCLA/SUPERFUND: This product is not listed as a CERCLA hazardous substance.

EPCRA This product has been reviewed acco rding to the EPA Hazard Categories
SARA Title III: promulgated under Sections 311 and 312 of the Superfund Amendment and Reauthorization Act of 1986 and is considered a hazardous chemical and a delayed
health hazard.

EPRCA This product contains none of the substances subject to the reporting requirements of
SARA Section 313: Section 313 of Title III of the Superfund Amendments and Reauthorization Act of
1986 and 40 CFR Part 372.MSDS: Cement Kiln Dust

Page 6 of 6 Revised: 03/01/11 Section 15: REGULATORY INFORMATION (continued)

RCRA: If discarded in its purchased form, this product would not be a hazardous waste either by listing or characteristic. Howeve r, under RCRA, it is th e responsibility of the product user to determine at the time of disposal, whether a material containing the product or derived from the product should be classified as a hazardous waste.

TSCA: Kiln dust and crystalline silica are exempt from reporting under the inventory update
rule.

California Crystalline silica (airborne particulates of respirable size) and Chromium (hexavalent Proposition 65: compounds) are substances known by the State of California to cause cancer.

WHMIS/DSL: Products containing crystalline silica and calcium carbonate are classified as D2A, E and are subject to WHMIS requirements.

Section 16: OTHER INFORMATION

Abbreviations:

> Greater than NA Not Applicable

ACGIH American Conference of Governmental Industrial Hygienists NFPA National Fire Protection Association

CAS No Chemical Abstract Service number NIOSH National Institute for Occupational Safety

and Health

NTP National Toxicology Program
CERCLA Comprehensive Environmental Response, Compensation and Liability

Act OSHA Occupational Safety and Health

Administration
CFR Code for Federal Regulations PEL Permissible Exposure Limit
CL Ceiling Limit pH Negative log of hydrogen ion

DOT U.S. Department of Transportation PPE Personal Protective Equipment
EST Eastern Standard Time R Respirable Particulate

HEPA High-Efficiency Particul ate Air RCRA Resource Conservation and Recovery Act

HMIS Hazardous Materials Identification System SARA Superfund Amendments and

Reauthorization Act

T Total Particulate IARC International Agency for Research on
Cancer TDG Transportation of Dangerous Goods

LC 50 Lethal Concentration TLV Threshold Limit Value

LD 50 Lethal Dose TWA Time Weighted Average (8 hour) mg/m 3 Milligrams per cubic meter

MSHA Mine Safety and Health Administration WHMIS Workplace Hazardous Materials Information System

This MSDS (Sections 1-16) was revised on March 1, 2011.

An electronic version of this MSDS is available at: www.lafarge-na.com under the Sustainability section.

Lafarge North America Inc. (LNA) believes the informati on contained herein is accurate; however, LNA makes no guarantees with respect to such accuracy and assumes no li ability in connection with the use of the information contained herein which is not intended to be and should not be construed as legal advice or as insuring compliance with any federal, state or local laws or regula tions. Any party using this product should review all such laws, rules, or regulations prior to use, including but not limited to US and Canada Federal, Provincial and State regulations.

NO WARRANTY IS MADE, EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OTHERWISE.