100% of analysts need to know what an “MSDS” is

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A Material Safety Data Sheet (MSDS), also known as a \"Safety Data Sheet for substances,\" is a comprehensive safety information document provided by chemical manufacturers/importers to users, aimed at explaining the physical and chemical properties of the chemicals, their hazard risks, and the safe handling procedures. In accordance with international standards (such as ISO 11014) and domestic regulations (such as GB/T 16483-2008), a proper MSDS must include 16 core sections. The following are detailed descriptions of each section: 1. Identification of the chemical and the company: Basic information on the chemical: Chinese name, English name, CAS number (Chemical Abstracts Service registry number), molecular formula, molecular weight, and physical appearance (e.g., “colorless transparent liquid”) ； Company information: name, address, contact phone number, and emergency contact of the manufacturing/supply company. Example: The MSDS for ether must indicate “Chinese name: Ether” ； English name: ethyl ether ； CAS Number: 60-29-7 ； Company name: XX Chemical Co., Ltd.” II. Key information on ingredients/composition: For pure chemicals, the chemical name (e.g., “ethanol”) and trade name (e.g., “industrial alcohol”) must be specified ； Mixtures: The names of the hazardous components, their concentrations (e.g., “Toluene: 30%”), and their CAS numbers (e.g., the CAS number for toluene is 108-88-3) must be listed. Requirement: If the composition levels are not disclosed (e.g., due to trade secrets), it should be indicated as “Composition of mixture not disclosed”. III. Key contents of the hazard overview: Hazard categories: Classified in accordance with the \"Classification and Labelling of Commonly Used Hazardous Chemicals\" (GB 13690-92) (such as \"flammable liquids\", \"toxic substances\") ； Routes of exposure: inhalation, ingestion, skin contact (e.g., “Ether can enter the body through inhalation and skin absorption”) ； Health hazards: Symptoms of acute/chronic poisoning (such as “inhalation of high concentrations of ether can cause headaches and coma”), target organs (such as “it has an inhibitory effect on the central nervous system”) ； Environmental hazards: Impacts on animals, plants, water bodies/atmosphere (e.g., “Diesel leaks can pollute water bodies and affect aquatic life”) ； Fire and explosion hazards: flammability (e.g., “Ether’s flash point: -45°C; it is highly flammable”), explosiveness (e.g., “Explosion limit: 1.9%~36%”). Example: The MSDS for diesel should state: “Hazard summary: This product is flammable, irritating, harmful to the environment, and can cause pollution to water bodies and the atmosphere.” IV. Core contents of first aid measures: On-site self-help/mutual rescue methods for different routes of exposure: Eye contact: Rinse with running water for 15 minutes and seek medical attention (e.g., “If ether gets into the eyes, rinse them with saline solution”) ； Skin contact: Remove contaminated clothing and wash with soapy water (for example, \"if diesel gets on the skin, it should be washed with warm water and soap\") ； Inhalation: Move the affected person to a place with fresh air immediately and provide oxygen (e.g., \"In the case of inhalation of high concentrations of ether, it is necessary to leave the area right away and keep the airways unobstructed\") ； Ingestion: Induce vomiting (e.g., “if diesel is swallowed, drink plenty of water to induce vomiting and seek medical attention”). Example: The MSDS for cutting fluid must state, “Eye contact: Redness and pain may occur; rinse eyes with plenty of water for 10 minutes. If irritation persists, seek medical attention.” V. Key aspects of fire safety measures: Hazardous properties: The risk of combustion/explosion of the chemical (e.g., “Ether vapors form explosive mixtures with air, and can explode easily when exposed to an open flame”) ； Fire extinguishing medium: Suitable extinguishing agents (such as \"solvated foam, carbon dioxide, dry powder\"), prohibited extinguishing agents (such as \"water is prohibited for extinguishing ether fires\") ； Firefighter protection: Equipment to be worn (e.g., “Firefighters must wear anti-static work clothes and gas masks”) ； Precautions: For example, \"Containers that become heated in a fire must be evacuated immediately to prevent explosions.\" Example: In the MSDS for ether, it should be stated that “Fire-fighting measures: Whenever possible, move the container away from the fire to an open area; spray water on the container to keep it cool.” ； Extinguishing agents: alcohol-resistant foam, carbon dioxide, dry powder”. VI. Key points for emergency response to leaks: Emergency actions: Quickly evacuate personnel from the contaminated area to a safe zone and isolate the scene (e.g., “in case of diesel leakage, isolate an area within 100 meters”) ； Protection for emergency responders: Wear self-contained positive-pressure breathing apparatus (e.g., “a gas mask must be worn when dealing with ether leaks”) and fire-resistant protective clothing ； Leak control: Small leaks are absorbed using activated carbon/inert materials (e.g., “Small ether leaks are absorbed with activated carbon”) ； Large-scale leaks are contained using dikes (for example, “in the case of a large diesel leak, sand dikes must be used to prevent it from entering the sewer system”) ； Environmental protection measures: Preventing leaks from entering water bodies and the atmosphere (e.g., “It is prohibited to discharge leaked cutting fluid into sewers”). Example: The MSDS for cutting fluid must specify: “Emergency measures in case of leakage: Collect the spilled liquid in a tightly sealed container. Carefully neutralize the spilled liquid, then rinse it off with plenty of water.” VII. Key points regarding handling, disposal, and storage: Precautions for handling: Perform operations in a closed environment (e.g., “Ether must be handled in a fume hood”), keep away from ignition sources (e.g., “Open flames are prohibited in diesel storage areas”), and prevent static electricity (e.g., “Equipment used for handling ether must be grounded”) ； Storage conditions: Temperature (e.g., “Diesel should be stored in a cool place at a temperature ≤30°C”), humidity (e.g., “Avoid humid environments”), containers (e.g., “Ether should be stored in steel drums with small openings”) ； Prohibitions: Substances to be avoided when in contact with (e.g., “Ether should be kept away from strong oxidizers”). Example: The MSDS for diesel should state \"Storage precautions: Store in a cool, well-ventilated area, away from sources of fire and heat.\" VIII. Key aspects of exposure control/individual protection: Engineering controls: such as enclosed production processes (e.g., “enclosed systems must be used in ether production”), and ventilation (e.g., “explosion-proof ventilation equipment must be installed in workshops”) ； Personal protection: Respiratory system: Wear a filtering gas mask when the air concentration is above the safe level (e.g., \"wear a half-mask gas mask when the ether concentration is high\") ； Eyes: Wear chemical safety goggles (e.g., “Goggles are required when handling cutting fluids”) ； Body: Wear anti-static work clothing (e.g., “Anti-static clothing is required when handling ether”), as well as oil-resistant rubber gloves (e.g., “Rubber gloves must be worn when in contact with diesel”) ； Health requirements: Smoking is strictly prohibited in the work area (e.g., “Smoking is forbidden in the diesel storage area”), and hands must be washed after contact with certain substances (e.g., “Wash hands with soap after handling cutting fluid”). Example: The MSDS for diethyl ether should state \"Personal protection: Wear anti-static work clothing, chemical safety goggles, and a filtered gas mask when the concentration in the air is above the permissible level.\" IX. Key aspects of physical and chemical properties: Physical properties: pH value (e.g., “pH value of sulfuric acid: