Section 9 – Physical and chemical properties identifies physical and chemical properties associated with the substance or mixture. Section 8 – Exposure controls/personal protection indicates the exposure limits, engineering controls, and personal protective equipment (PPE) measures that can be used to minimize worker exposure. Section 7 – Handling and storage provides guidance on the safe handling practices and conditions for safe storage of chemicals, including incompatibilities. It may also include recommendations distinguishing between responses for large and small spills where the spill volume has a significant impact on the hazard. Section 6 – Accidental release measures provides recommendations on the appropriate response to spills, leaks, or releases, including containment and cleanup practices to prevent or minimize exposure to people, properties, or the environment. Section 5 – Fire-fighting measures lists recommendations for fighting a fire caused by the chemical, including suitable extinguishing techniques, equipment, and chemical hazards from fire. Section 4 – First-aid measures describes the initial care that should be given by untrained responders to an individual who has been exposed to the chemical. This section includes information on substances, mixtures, and all chemicals where a trade secret is claimed. Section 3 – Composition/information on ingredients identifies the ingredient(s) contained in the product indicated on the SDS, including impurities and stabilizing additives. Section 2 – Hazard(s) identification includes the hazards of the chemical and the appropriate warning information associated with those hazards. It also provides the essential contact information of the supplier. Section 1 – Identification identifies the chemical on the SDS as well as the recommended uses. The federal Hazard Communication Standard, revised in 2012, now requires chemical manufacturers, distributors, and importers to provide new Safety Data Sheets in a uniform format that includes the section numbers, headings, and associated information below. Need a Safety Data Sheet now? Go to SDS Sources.Questions: Contact us with questions, comments, or suggestions about the Chemical Reactivity Worksheet.Safety Data Sheets (formerly called Material Safety Data Sheets) communicate hazard information about chemical products. General hazard statements, predicted gas products, and literature documentation for the selected pair of chemicals are shown at the bottom of the chart. The reactivity predictions are color coded, and the cells on the chart can be clicked to find more information about specific predicted reactions. The Compatibility Chart shows the predicted hazards of mixing the chemicals in a mixture in an easy-to-use graphical interface. You can also access all the other features of the program from this screen, including the Compatibility Chart and hazards report for any mixture you create, reference information about the reactive groups used in the CRW, and information about absorbent incompatibilities with certain chemicals. The Mixture Manager screen allows you to search for chemicals in the CRW's database, see a preview of the information on the chemical datasheets, and create a virtual mixture of chemicals. The other module, new in CRW 4, contains information about known incompatibilities between certain chemicals and materials that are used in the construction of containers, pipes, and valving systems on industrial chemical sites. One of them discusses known incompatibilities between certain chemicals and common absorbents which are used in the cleanup of small spills. The CRW has two additional modules of particular interest to the chemical industry. For example, if the reaction is predicted to generate gases, the CRW will list the potential gaseous products, along with literature citations related to the prediction. The CRW also includes a reactivity prediction worksheet that you use to virtually "mix" chemicals to simulate accidental chemical mixtures, such as in the case of a train derailment, to learn what dangers could arise from the accidental mixing. You can also create your own custom chemical datasheets, as you might do, for instance, if your facility produces a proprietary chemical that is not in the CRW database. They also include case histories on specific chemical incidents, with references. The chemical datasheets in the CRW database contain information about the intrinsic hazards of each chemical and about whether a chemical reacts with air, water, or other materials. The CRW predicts possible hazards from mixing chemicals and is designed to be used by emergency responders and planners, as well as the chemical industry, to help prevent dangerous chemical incidents. Reactivity is the tendency of substances to undergo chemical change, which can result in hazards-such as heat generation or toxic gas byproducts.
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