Some lab safety measures


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Faculty Of Pharmacy Cairo University Organic Chemistry Department 2 nd Year Students (2010/2011) Presents Safety Measures In the laboratory

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1-Proper Labeling Of Chemicals

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The National Fire Protection Association (NFPA 704) system uses an a diamond-shaped diagram of symbols and numbers to indicate the degree of hazard associated with a particular chemical or material .

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Requirements for labeling of chemical containers come from the Occupational Safety and Health Administration (OSHA)

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Some requirements for labeling: Use labels with good adhesive. Use a permanent marker (waterproof and fade resistant) Replace damaged, faded or semi-attached labels.

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The label must contain the chemical name of substance, expiry date, manufacture date. An appropriate hazard warning directions for use, first aid procedures and emergency procedures details of manufacturer or importer.

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2-Storage and transport of chemicals

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Some errors of Storage chemicals stored in random order chemicals stored in alphabetical order chemicals stored by poorly chosen categories

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Proper Storage of Chemicals Alkali metals should be stored in areas where they are free of moisture . Store water-reactive compounds away from aqueous solutions . Use tight sealed caps for volatile chemicals. Some chemicals will require vented caps to allow escape of any gases evolved during storage . Choose an appropriate storage position .

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Dealing with Chemicals Personal Protective Equipment (PPE) must be used as : Gloves Protective clothes Goggles Non-slip shoes

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Safe transport of chemicals: Never pick up a bottle by the cap or lid. Place bottles of extremely toxic or carcinogenic chemicals in an unbreakable container before transport. Bring a spill kit when transporting hazardous liquids Wear eye protection while transporting chemicals.

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3-Waste management and disposal Disposal of chemical wastes should be done in a proper way otherwise we’ll be exposed to dangerous situations!!!

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Liquid disposal: If the liquid chemical can be disposed of in the skin, dispose of it by rinsing it down with large quantities of water. Avoid unnecessary splashing during draining

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Solid Disposal: Water non-reactive solids when disposed into sink , flush them with running water . All other solids should be disposed of in special containers provided for this purpose.

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What Can I put in the same waste container bottle for disposal ?? Flammable solvents, e.g. : acetone, methanol, ethanol Organic acids, e.g. : formic acid, acetic acid, propionic acid Halogenated solvents , e.g. : chloroform, carbon tetrachloride

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What Cannot be put in the same container bottle for disposal?? Mineral acids, e.g. : hydrochloric acid, nitric acid, sulphuric acid Oxidizers , e.g. : hydrogen peroxide, potassium permanganate, bleach Heavy metal solutions , e.g. : aqueous solutions containing arsenic, barium, cadmium, chromium, copper, lead, mercury

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Hazardous substances are required to be labeled with the following: product name, chemical name, ingredients risk phrases and safety phrases directions for use, first aid procedures and emergency procedures.

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Glass Disposal the glassware must be free of liquids Dispose of non-infectious glassware in Laboratory Glassware Bucket Remove labels of empty bottles before discarding in laboratory glassware containers. The glassware must be rinsed and labeled “GLASS” or “SOLID NON-HAZRDOUS WASTE”

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The storage area of such wastes should be safe too, it shouldn’t be accessible to everybody and the workers should be fully protected by means of masks gloves, protective coats ….etc

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4-Material safety data sheet (MSDS) These are information provided by the manufacturer which describes: the product, its hazards boiling, melting point, flammability, reactivity, how to handle, how to dispose, how to store, conditions to avoid

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They are useful for : Workers exposed to hazardous substances To know the proper methods for storage Knowing the emergency procedures for fire fighters, emergency room personnel .

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Where can you get MSDS ? Your laboratory or workplace should have a collection of MSDS that came with the hazardous chemicals. You can get them from the distributor. The Internet has a wide range of FREE resources.

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By: Menna Ahmed Menna Osama Menna Maged Menna Mahmoud Menna M. Magdy Menna Essam Menna Shebl Menna Ramadan Menna Magdy IDs : (723:729) ,731,732

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Designed by : Mennatullah Magdy