Gloves, laboratory

The clean laboratory for trace metals was divided into three areas entrance laboratory (with clothes changing annex), instrument laboratory, and ultraclean sample preparation laboratory, all under positive pressure with active charcoal filtered air. Personnel using the clean rooms were required to wear hair caps, polyethylene gloves, laboratory coats, and designated shoes. These items are worn only in the clean rooms. 

The description of the method to be used should include details of all practical precautions which will be taken to limit risk, such as the need for ventilation, minimization of inhalation of particulates or aerosols, using fume cupboards or safety screens, and wearing gloves, laboratory coat, and safety spectacles. Handling procedures, packaging for transit, and disposal of unused reactants or products all need to be considered. 

Small Quantities. Wear neoprene gloves, laboratory coat and eye protection. Work in the fume hood. Add slowly to large volume of cold water in a plastic pail. Neutralize with 5% sodium hydroxide solution or sodium carbonate and pour into the drain.18... 

Shut off all possible sources of ignition. Wear nitrile rubber gloves, laboratory coat, and eye protection. A self-contained breathing apparatus may be necessary, depending on the size of the spill. Cover the spill with a 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite), and sand. When the acetic anhydride has been absorbed, scoop into a plastic pail and, in the fume hood, very slowly add the mixture to a pail of cold water. Allow it to stand for 24 hours. Test pH of the solution and neutralize if necessary with sodium carbonate. Decant the solution to the drain with water. Treat the solid residue as normal refuse. The spillage site should be washed thoroughly with soap and water.19-22... 

Small Quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Work in the fume hood. To decompose 5 mL (5.4 g) of acetic anhydride, place 60 mL of a 2.5 M sodium hydroxide solution (prepared by dissolving 6.0 g of NaOH in 60 mL of water) in a 250-mL, three-necked, round-bottom flask equipped with a stirrer, dropping funnel, and thermometer. Add the acetic anhydride to the dropping funnel and run it dropwise into stirred solution at such a rate that the temperature does not rise above 35°C. Allow to stir at room temperature overnight. Neutralize solution to pH 7 with 2 M hydrochloric acid (slowly add 16 mL of concentrated acid to 80 mL of cold water) and pour into the drain.23... 

Shut off all possible sources of ignition. Wear nitrile rubber gloves, laboratory coat, and eye protection. A self-contained breathing apparatus may be necessary, depending on the size of the spill. Cover the spill with a 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite), and sand. When the acetyl chloride has been... 

Small Quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Work in the fume hood. Dissolve the acrylic acid in water to give a 10% solution. For each 5 mL of this solution, add 250 mL of 2% aqueous sodium hydroxide and, while stirring, 10 g of potassium permanganate. Stir at room temperature for 48 hours. Add solid sodium bisulfite until the solution is colorless, neutralize with 5% hydrochloric acid, and pour the liquid into the drain. Discard any small amount of brown solid (manganese dioxide) with regular refuse.7... 

Wear protective gloves, laboratory coat, and goggles. If a solution is spilled, absorb on tissue. If solid is spilled, as far as possible, scoop in a container and then rinse the area of the spill with methanol and absorb the methanol onto tissues. Place the tissues in the container with the solid and add sufficient household bleach (5% sodium hypochlorite solution) to cover. Allow to stand at room temperature for at least 2 hours. Add an equal volume of 5% aqueous acetone. Allow to react for 30 minutes and then wash into the drain with water/... 

Wear nitrile rubber gloves, laboratory coat, and goggles. Scoop the solid into a pail of water. Slowly add dry sodium carbonate to pH 7. The solution can be poured into the drain. The site of spillage should be washed thoroughly to remove all of the ammonium nitrate which may render organic matter (e.g., wood) dangerously explosive.32,33... 

Small Quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Avoid breathing dust. Dissolve the barium salt in the minimum volume of water. For each gram of barium salt, add 15 mL of 10% sodium sulfate solution. Let stand for 1 week. Test for completeness of precipitation by adding a few drops of 10% sodium sulfate solution. If required, add more sodium sulfate solution until no further precipitation occurs. Decant supernatant liquid or filter solid. Treat solid as normal refuse. Wash liquid into drain.20... 

Wear nitrile rubber gloves, laboratory coat, eye protection, and self-contained breathing apparatus. 

Wear nitrile rubber gloves, laboratory coat, and eye protection. Scoop up the solid and package for disposal by burning. Wash the site with strong soap solution.6 ... 

Small Quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Work in the fume hood. Dissolve the compound in a minimum of 6 M hydrochloric acid (add concentrated acid to an equal volume of cold water). Filter and treat the filtrate with a slight excess of 6 M ammonium hydroxide (add 42 mL of concentrated ammonium hydroxide to 58 mL of cold water, about pH 8 to pHydrion paper). Boil and allow the coagulated precipitate to settle for about 12 hours. Filter and dry. Recycle, return to supplier, or send for disposal in a secure landfill.6 7... 

Wear butyl rubber gloves, laboratory coat, and eye protection. Work in the fume hood from behind safety shield. Add azide to concentrated hydrochloric acid (100 mL acid/g azide). While stirring, add granular tin (2.5 g/g azide). Allow the mixture to stir for 3 hours. Remove the unused tin by filtration and pour the filtrate into a pail of cold water. Neutralize the solution with sodium carbonate and wash into the drain. Discard or reuse recovered tin.8... 

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