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0332 Date: January 2004 Revision: August 2009 DOT Number: UN 1405

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Right to Know Hazardous Substance Fact Sheet Common Name: CALCIUM SILICIDE Synonyms: Calcium Disilicide; Calcium Silicon CAS Number: 12013-56-8 Chemical Name: Calcium Silicide RTK Substance Number: 0332 Date: January 2004 Revision: August 2009 DOT Number: UN 1405 Description and Use EMERGENCY RESPONDERS >>>> SEE LAST PAGE Calcium Silicide is a gray, to black or brown, powder or chip Hazard Summary with a repulsive odor. It is used for making special metal Hazard Rating NJDOH NFPA alloys, in pyrotechnics, and as a deoxidizer. HEALTH 1 - FLAMMABILITY 3 - REACTIVITY 2 W - FLAMMABLE AND WATER REACTIVE POISONOUS GASES ARE PRODUCED IN FIRE CONTAINERS MAY EXPLODE IN FIRE Reasons for Citation Hazard Rating Key: 0=minimal; 1=slight; 2=moderate; 3=serious; f Calcium Silicide is on the Right to Know Hazardous 4=severe Substance List because it is cited by DOT. f This chemical is on the Special Health Hazard Substance f Calcium Silicide can affect you when inhaled. List. f Contact can irritate the skin and eyes. f Inhaling Calcium Silicide can irritate the nose, throat and lungs. f Calcium Silicide is FLAMMABLE and REACTIVE and a DANGEROUS FIRE and EXPLOSION HAZARD. SEE GLOSSARY ON PAGE 5. Workplace Exposure Limits FIRST AID No occupational exposure limits have been established for Eye Contact Calcium Silicide. However, it may pose a health risk. Always f Immediately flush with large amounts of water for at least 15 follow safe work practices. minutes, lifting upper and lower lids. Remove contact lenses, if worn, while rinsing. Skin Contact f Remove contaminated clothing and wash contaminated skin with soap and water. Inhalation f Remove the person from exposure. f Begin rescue breathing (using universal precautions) if breathing has stopped and CPR if heart action has stopped. f Transfer promptly to a medical facility. EMERGENCY NUMBERS Poison Control: 1-800-222-1222 CHEMTREC: 1-800-424-9300 NJDEP Hotline: 1-877-927-6337 National Response Center: 1-800-424-8802 CALCIUM SILICIDE Page 2 of 6 Determining Your Exposure Other Effects f No chronic (long-term) health effects are known at this time. f Read the product manufacturer’s Material Safety Data Sheet (MSDS) and the label to determine product ingredients and important safety and health information about the product mixture. Medical Medical Testing f For each individual hazardous ingredient, read the New There is no special test for this chemical. However, seek Jersey Department of Health Hazardous Substance Fact medical attention if illness occurs or overexposure is Sheet, available on the RTK website suspected. (www.nj.gov/health/eoh/rtkweb) or in your facility’s RTK Central File or Hazard Communication Standard file. Any evaluation should include a careful history of past and present symptoms with an exam. Medical tests that look for f You have a right to this information under the New Jersey damage already done are not a substitute for controlling Worker and Community Right to Know Act, the Public exposure. Employees Occupational Safety and Health (PEOSH) Act if you are a public worker in New Jersey, and under the Request copies of your medical testing. You have a legal right federal Occupational Safety and Health Act (OSHA) if you to this information under the OSHA Access to Employee are a private worker. Exposure and Medical Records Standard (29 CFR 1910.1020). f The New Jersey Right to Know Act requires most employers to label chemicals in the workplace and requires public employers to provide their employees with information concerning chemical hazards and controls. The federal OSHA Hazard Communication Standard (29 CFR 1910.1200) and the PEOSH Hazard Communication Standard (N.J.A.C. 12:100-7) require employers to provide similar information and training to their employees. This Fact Sheet is a summary of available information regarding the health hazards that may result from exposure. Duration of exposure, concentration of the substance and other factors will affect your susceptibility to any of the potential effects described below. Health Hazard Information Acute Health Effects The following acute (short-term) health effects may occur immediately or shortly after exposure to Calcium Silicide: f Contact can irritate the skin and eyes. f Inhaling Calcium Silicide can irritate the nose, throat and lungs. Chronic Health Effects The following chronic (long-term) health effects can occur at some time after exposure to Calcium Silicide and can last for months or years: Cancer Hazard f According to the information presently available to the New Jersey Department of Health, Calcium Silicide has not been tested for its ability to cause cancer in animals. Reproductive Hazard f According to the information presently available to the New Jersey Department of Health, Calcium Silicide has not been tested for its ability to affect reproduction. CALCIUM SILICIDE Page 3 of 6 Workplace Controls and Practices Eye Protection Very toxic chemicals, or those that are reproductive hazards or f Wear eye protection with side shields or goggles. sensitizers, require expert advice on control measures if a less f If additional protection is needed for the entire face, use in toxic chemical cannot be substituted. Control measures combination with a face shield. A face shield should not be include: (1) enclosing chemical processes for severely used without another type of eye protection. irritating and corrosive chemicals, (2) using local exhaust ventilation for chemicals that may be harmful with a single Respiratory Protection exposure, and (3) using general ventilation to control Improper use of respirators is dangerous. Respirators exposures to skin and eye irritants. For further information on should only be used if the employer has implemented a written workplace controls, consult the NIOSH document on Control program that takes into account workplace conditions, Banding at www.cdc.gov/niosh/topics/ctrlbanding/. requirements for worker training, respirator fit testing, and The following work practices are also recommended: medical exams, as described in the OSHA Respiratory Protection Standard (29 CFR 1910.134). f Label process containers. f Provide employees with hazard information and training. f At any detectable concentration, use a NIOSH approved f Monitor airborne chemical concentrations. negative pressure, air-purifying, particulate filter respirator f Use engineering controls if concentrations exceed with an N, R or P95 filter. More protection is provided by a recommended exposure levels. full facepiece respirator than by a half-mask respirator, and f Provide eye wash fountains and emergency showers. even greater protection is provided by a powered-air f Wash or shower if skin comes in contact with a hazardous purifying respirator. material. f Leave the area immediately if (1) while wearing a filter or f Always wash at the end of the workshift. cartridge respirator you can smell, taste, or otherwise detect f Change into clean clothing if clothing becomes Calcium Silicide, (2) while wearing particulate filters contaminated. abnormal resistance to breathing is experienced, or (3) eye f Do not take contaminated clothing home. irritation occurs while wearing a full facepiece respirator. f Get special training to wash contaminated clothing. Check to make sure the respirator-to-face seal is still good. f Do not eat, smoke, or drink in areas where chemicals are If it is, replace the filter or cartridge. If the seal is no longer being handled, processed or stored. good, you may need a new respirator. f Wash hands carefully before eating, smoking, drinking, f Consider all potential sources of exposure in your workplace. applying cosmetics or using the toilet. You may need a combination of filters, prefilters or cartridges to protect against different forms of a chemical (such as In addition, the following may be useful or required: vapor and mist) or against a mixture of chemicals. f Where the potential for high exposure exists, use a NIOSH f Before entering a confined space where Calcium Silicide approved supplied-air respirator with a full facepiece may be present, check to make sure that an explosive operated in a pressure-demand or other positive-pressure concentration does not exist. mode. For increased protection use in combination with an f Use a vacuum to reduce dust during clean-up. DO NOT auxiliary self-contained breathing apparatus or an DRY SWEEP. emergency escape air cylinder. Personal Protective Equipment Fire Hazards The OSHA Personal Protective Equipment Standard (29 CFR If employees are expected to fight fires, they must be trained and equipped as stated in the OSHA Fire Brigades Standard 1910.132) requires employers to determine the appropriate (29 CFR 1910.156). personal protective equipment for each hazard and to train employees on how and when to use protective equipment. f Calcium Silicide is a FLAMMABLE SOLID. f Use sand, soda ash, lime or dry chemicals appropriate for The following recommendations are only guidelines and may extinguishing metal fires. DO NOT USE WATER or FOAM. not apply to every situation. f POISONOUS GASES ARE PRODUCED IN FIRE, including Silicon Oxides and Hydrogen. f CONTAINERS MAY EXPLODE IN FIRE. Gloves and Clothing f DO NOT get water into containers. f Avoid skin contact with Calcium Silicide. Wear personal protective equipment made from material which can not be permeated or degraded by this substance. Safety equipment suppliers and manufacturers can provide recommendations on the most protective glove and clothing material for your operation. f Safety equipment manufacturers recommend Nitrile and Polyvinyl Chloride for gloves, and Tyvek, or the equivalent, as a protective material for clothing. f All protective clothing (suits, gloves, footwear, headgear) should be clean, available each day, and put on before work. CALCIUM SILICIDE Page 4 of 6 Spills and Emergencies Occupational Health Information If employees are required to clean-up spills, they must be Resources properly trained and equipped. The OSHA Hazardous Waste Operations and Emergency Response Standard (29 CFR The New Jersey Department of Health offers multiple services 1910.120) may apply.
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