
The determination of what constitutes a hazardous material is important for complying with relevant laws and regulations. In the US, the Department of Transportation (DOT) regulates the transportation of hazardous materials under the Hazardous Materials Transportation Act (HMTA). The Pipeline and Hazardous Materials Safety Administration (PHMSA) is responsible for writing the hazardous materials regulations outlined in 49 CFR Parts 100-180 and 100-185. These regulations apply to both carriers and shippers, with specific requirements for motor carriers outlined in the Federal Motor Carrier Safety Regulations. The Occupational Safety and Health Administration (OSHA) also plays a crucial role in hazard determination, with its Hazard Communication Standard (HCS) designed to protect against chemical-related illnesses and injuries. OSHA's HCS defines hazardous chemicals and provides guidance on hazard determination, including the identification of physical hazards such as combustible, explosive, and flammable substances, as well as health hazards like carcinogens and toxic substances. Additionally, the manufacturer or importer of a chemical substance is responsible for determining if it is subject to OSHA's Material Safety Data Sheet (MSDS) requirements, which are essential for communicating hazards during transportation.
| Characteristics | Values |
|---|---|
| Document Name | Safety Data Sheet (SDS) / Material Safety Data Sheet (MSDS) |
| Document Purpose | Provides hazard classification |
| Document Location | Manufacturer's website |
| Document Contents | Transportation Information |
| Applicable Regulations | 49 CFR Parts 100-180, 49 U.S.C. 5101 et seq., 49 U.S.C., 40 CFR Part 370, 29 CFR Section 1910.1200(c), 40 CFR Section 370.2, 29 CFR Section 1910.1200(g), Federal Motor Carrier Safety Regulations, 29 CFR 1910.1200(g), Federal Standard No.313 |
| Responsible Authority | US Department of Transportation, Pipeline and Hazardous Materials Safety Administration (PHMSA), Occupational Safety and Health Administration (OSHA) |
| Hazard Types | Physical Hazards, Health Hazards, Volatility, Reactivity, Explosiveness, Flammability, Carcinogens, Toxins, Corrosives, Combustibility |
| Hazardous Materials | Chemicals, Gases, Liquids, Solids |
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What You'll Learn

Material Safety Data Sheets (MSDSs)
MSDSs are intended for a broad audience, including employers, workers, regulatory professionals, emergency personnel, doctors, nurses, and supervisors. They are designed to be easily accessible, with some employers providing them in physical binders and others making them available online or in computer databases. MSDSs are typically divided into several sections, each containing different kinds of information. The first sections (1-8) provide urgent information on identification, hazards, composition, first aid, and firefighting measures. The following sections (9-11) contain technical data, including stability, reactivity, and chemical properties. The final sections (12-15) are not mandatory but are necessary for full compliance with the Globally Harmonized System (GHS), an international set of guidelines developed by the United Nations to ensure the safe manufacturing, handling, use, disposal, and transportation of hazardous materials.
MSDSs are prepared by the supplier or manufacturer of the material and are required to be updated every three years. While the format is left to the manufacturer or supplier, the information for the nine basic categories must always be included in a Canadian MSDS for a controlled product. These categories include information such as chemical properties, potential health hazards, recommended protective measures, safety precautions for storage and handling, and emergency procedures. MSDSs serve as an essential reference for managing hazardous chemicals and developing comprehensive health and safety programs.
To obtain an MSDS, one can check with their environmental or occupational health office, or contact the distributor or manufacturer of the material. Online databases, such as Chemical Safety's SDS and GHS database, also offer free access to MSDSs and allow for advanced searches using parameters like chemical name, manufacturer name, and CAS number.
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Hazard Communication Standard (HCS)
The Hazard Communication Standard (HCS) is a set of guidelines that ensures chemical safety in the workplace. It requires employers to disclose toxic and hazardous substances and provide their employees with information about the identities and hazards of these chemicals. This includes developing and implementing employee training programs regarding the hazards of chemicals and protective measures. The HCS is related to the Worker Protection Standard, which gives workers the right to understand the risks of the chemicals they work with.
The HCS requires chemical manufacturers and importers to evaluate the hazards of the chemicals they produce or import and prepare labels and safety data sheets to convey this information to their customers and employees. These safety data sheets, also known as Material Safety Data Sheets (MSDS), provide essential information about the product's hazard classification and are often available on the manufacturer's website. Labels on containers of chemicals must include a harmonized signal word, pictogram, and hazard statement for each hazard class and category.
The HCS is designed to protect workers by providing them with the knowledge and tools to handle chemicals safely. It is the responsibility of employers to ensure that their employees have access to this information and are trained to understand the potential risks and hazards of the chemicals they work with. This includes understanding the possibility of risk and the measures/methods to treat each hazard while staying safe.
The HCS is also known as OSHA's HAZCOM, which was first adopted in the United States in 1983 with a limited scope. In 2012, the United States updated its HCS to align with the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). This update provided a common and coherent approach to classifying chemicals and communicating hazard information, reducing trade barriers and improving productivity for businesses that handle, store, and use hazardous chemicals. The GHS has been adopted by many countries, including those in the European Union (EU) and European Economic Area (EEA), and is expected to become the standard for workplace hazard protection internationally.
The HCS is just one example of the regulations surrounding hazardous materials. Other regulations, such as the Federal Hazardous Materials Transportation Law and the Hazardous Materials Transportation Act (HMTA), also play a crucial role in ensuring the safe transportation and handling of hazardous materials. These regulations outline the responsibilities of shippers, carriers, and employers in the transportation and handling of hazardous materials.
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Hazardous Materials Transportation Act (HMTA)
The Hazardous Materials Transportation Act (HMTA), enacted in 1975, is the primary federal law in the United States that regulates the transportation of hazardous materials. The HMTA aims to protect life, property, and the environment from the risks associated with transporting hazardous materials in intrastate, interstate, and foreign commerce. This includes transportation by ground, air, sea, or any other mode, such as pipelines.
The HMTA empowers the Secretary of Transportation to designate any "particular quantity or form" of material as hazardous if it poses an unreasonable risk to health, safety, or property. This can include materials that are explosive, radioactive, infectious, flammable, toxic, oxidizing, or corrosive. The Secretary has the authority to issue regulations and enforce them through compliance orders, civil penalties, and injunctive relief.
The Act was passed to address the issues of inconsistent and fragmented regulations, leading to illegal dumping and spills. It sought to improve uniformity in regulations and strengthen the Hazardous Materials Transportation Control Act of 1970. Since its enactment, the HMTA has undergone two major amendments: the Hazardous Materials Transportation Uniform Safety Act (1990) and the Hazardous Materials Transportation Uniform Safety Act (1990).
The HMTA is enforced through four key provisions under Title 49 of the United States Code. Violations of the regulations can result in civil or criminal penalties, unless a special permit is granted by the Secretary of Transportation. Carriers are responsible for ensuring that hazardous materials packages are properly marked and labelled and that the required information is readily available to personnel in the event of an incident or investigation.
The Pipeline and Hazardous Materials Safety Administration (PHMSA) is responsible for writing the hazardous materials regulations outlined in the HMTA. These regulations ensure safe handling, marking, maintenance, testing, and distribution of packages containing hazardous materials.
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Federal hazardous materials transportation law
The principal federal law in the United States regulating the transportation of hazardous materials is the Hazardous Materials Transportation Act (HMTA), enacted in 1975. The HMTA is enforced through four key provisions encompassing federal standards under Title 49 of the United States Code. The Act's purpose is to protect against the risks to life, property, and the environment posed by the transportation of hazardous materials. It seeks to improve the uniformity of existing regulations, prevent illegal dumping, and address the problem of uncoordinated and fragmented enforcement.
The Secretary of the Department of Transportation is responsible for regulating the transportation of hazardous materials under the HMTA. The Secretary has the authority to designate materials as hazardous when they pose unreasonable risks to health, safety, or property. The Pipeline and Hazardous Materials Safety Administration (PHMSA) is tasked with writing the hazardous materials regulations, which are contained in 49 CFR Parts 100-180. These regulations cover various aspects of hazardous materials transportation, including packaging requirements, emergency response information, and training requirements.
Motor carriers and shippers transporting hazardous materials must comply with the Federal Motor Carrier Safety Regulations and consult the most current edition of 49 CFR Parts 100-185. The trucking industry, which plays a significant role in transporting hazardous materials, is regulated by multiple federal, state, and local agencies. The Occupational Safety and Health Administration (OSHA) has limited authority over vehicle operations, but its HAZWOPER standard covers emergency response personnel in the event of spills.
To determine if a product is classified as a hazardous material, the Safety Data Sheet (SDS), formerly known as the Material Safety Data Sheet (MSDS), prepared by the manufacturer, should be located. This document provides the product's hazard classification in its 'Transportation Information' section and can often be found on the manufacturer's website. It is the responsibility of the shipper to know whether the products they are shipping are hazardous and to communicate their hazards appropriately, adhering to the relevant regulations.
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Health hazards
When it comes to determining what constitutes a hazardous material, several key documents and regulations come into play. These documents provide guidelines and standards to identify, classify, and manage hazardous substances, particularly focusing on health hazards.
One crucial document is the Safety Data Sheet (SDS), previously known as the Material Safety Data Sheet (MSDS). The SDS is prepared by the manufacturer and includes vital information about the product's hazard classification, specifically in the "Transportation Information" section. This sheet is essential for businesses and individuals shipping products, as it helps them identify if they are dealing with hazardous materials and communicate their hazards appropriately.
The Occupational Safety and Health Administration (OSHA) plays a significant role in regulating hazardous materials, particularly in the context of workplace safety. The OSHA Hazard Communication Standard (HCS) aims to ensure that employees and downstream users are informed about chemical hazards. This includes defining "health hazards" and establishing requirements for labels, safety data sheets, and employee training. OSHA's broad definition of hazardous chemicals encompasses elements, compounds, or mixtures that pose physical or health hazards, including carcinogens, toxics, reproductive toxins, irritants, corrosives, neurotoxins, hepatotoxins, and more.
To comply with OSHA regulations, facilities that handle certain quantities of hazardous chemicals are required to prepare and make available Material Safety Data Sheets (MSDSs). This documentation process is crucial for hazard determination and communication. Additionally, facility owners or operators who are uncertain about the hazardous nature of a chemical can seek assistance from the manufacturer or the local OSHA office.
The Health and Safety Code Chapter 502, known as the Hazard Communication Act, further emphasizes the importance of hazard communication and employee protection. It includes provisions for criminal penalties for employers who knowingly disclose false hazard information or fail to disclose hazard information provided on an MSDS, resulting in occupational diseases or injuries. This underscores the legal implications of accurate hazard communication and the responsibility of employers to maintain safe working environments.
In conclusion, determining what constitutes a hazardous material involves consulting documents such as the Safety Data Sheet (SDS) and adhering to regulations set by entities like OSHA. These resources provide guidance on identifying health hazards, ensuring proper labelling and handling, and safeguarding the health and safety of workers and the general public. By following these guidelines, businesses can make informed decisions and take necessary precautions when dealing with hazardous materials.
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Frequently asked questions
A hazardous material is any element, compound, or mixture of elements that is a physical or health hazard. Physical hazards include chemicals that are combustible, explosive, flammable, oxidizers, reactive, unstable, water-reactive, as well as compressed gases. Health hazards include carcinogens, toxics, reproductive toxins, irritants, corrosive, neurotoxins, hepatotoxins, and chemical-source illnesses and injuries.
The Hazard Communication Standard (HCS) is a key document that outlines the processes and considerations for hazard determination. It is designed to protect against chemical hazards and ensure that employers and employees have the information needed to recognise and control such hazards.
MSDSs are documents that provide information on the hazards of specific chemicals. They are required by OSHA for chemical manufacturers and importers and must be made available to employers. MSDSs can be found on the manufacturer's website or through a web search.
Volatile liquids such as alcohol and gasoline, certain dusts (e.g. from bakeries, sawmills, and grain handling), and reactive chemical mixtures are considered hazardous materials.
The transportation of hazardous materials is regulated by the Hazardous Materials Transportation Act (HMTA) and enforced by the Department of Transportation. Specific regulations can be found in 49 CFR Parts 100-180 and Federal Motor Carrier Safety Regulations.

























