Rubber, laboratory gloves

PERSONAL PROTECTION Use laboratory protective equipment (lab coat, gloves, footwear, vent hood) use polyvinyl chloride, not rubber, for gloves wear dust-proof goggles or face shield when working with powders or dusts wear self-contained breathing apparatus operated in positive pressure mode. 

Polyisoprene is an important flexible rubbery material, one of the first rubbers to be used as it is found in nature (thus the alternate name natural rubber ). It is used in belts and hoses in automobiles, in laboratory gloves, and in mbber bands. The 1,2 and 3,4 reactions are sometimes known as vinyl addition, because part of the diene monomer simply acts as an X group in a vinyl monomer. 

Protective rubber or latex laboratory gloves and laboratory coats should be worn at all times when working with equipment, be it the porosimeter or the dilatometer, or during the cleanup process. 

Experimentation with test animals and laboratory and plant experience indicate that the fluorophosphoric acids are less toxic and dangerous than hydrogen fluoride (58). However, they contain, or can hydrolyze to, hydrofluoric acid and must be treated with the same care as hydrofluoric acid. Rubber gloves and face shields are essential for all work with these acids, and full mbber dress is necessary for handling larger quantities. The fumes from these acids contain HF. 

Caution Thallium compounds are highly toxic.3 However, they may he safely handled if prudent laboratory procedures are practiced. Rubber gloves and laboratory coats should be worn and reactions should be carried out in an efficient hood. In addition, thallium wastes should be collected and disposed of separately (Note 1). 

Personal Protective Equipment Laboratory personnel should wear appropriate chemical cartridge respirator, Butyl or Neoprene rubber gloves, and full-length faces shields with forehead protection depending on the amount of exposure. However, rescue personnel should be equipped with self-contained breathing apparatus (SCBA) and have available and use as appropriate Level A personal protective equipment (PPE). When you do not know the degree of hazard, use Level A personal protective equipment (PPE) as follows ... 

OTHER PROTECTIVE EQUIPMENT Full protective clothing will consist of M9 mask and hood, butyl rubber suit (M3), M2A1 butyl boots, M3 and M4 gloves, unimpregnated underwear, or demilitarization protective ensemble (DPE). For laboratory operations, wear lab coats and have a protective mask readily available. 

Since all triacyglycerols (fats) are hydrophobic, they may be extracted from food samples using hydro-phobic solvents such as various ethers. Also, since fat content in processed foods is of critical concern to consumers, this technique has considerable real-world significance. Rubber gloves should be worn, and it is very important that there be no open flames in the laboratory. 

In addition to the standard laboratory protection, such as safety goggles and chemically resistant butyl rubber gloves, a personal HF gas monitor with audible alarm and a safety sensor for liquids, as described in Section 10.4, are commercially available [2], For detailed information about the toxic effects of HF, see references Fi5, Wa8 and Re4. 

Nichols advised to provide good ventilation in the laboratory, to wear something better than rubber gloves, and to remove promptly all clothing wet with epichlorohydrin also to wash the hands with soap and water immediately after handling epichlorohydrin Refs 1 Beil 17, 6, (4) [l3l 2) Daniels Diet (1902), 301 (Under Fleming) 3) J.E. Nichols, Reynolds Metals Co, Richmond, Va, Chemical Industries, 67(No 2), p 158, Aug 1950 4) CondChemDict (1961), pp 443-R... 

Direct absorption (through the skin into the bloodstream). This is also a common route for the absorption of a toxic substance whether liquid, solid or gaseous. The danger may be reduced by wearing rubber or plastic gloves, in addition to the usual laboratory white coat. However, clean and careful working procedures are still necessary despite these precautions. Protective gloves are often per-... 

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... 

Small Quantities. Wear nitrile rubber gloves, laboratory coat, and eye protection. Work in the fume hood. To decompose 10 mL (16.6 g) of acetyl bromide, place 160 mL... 

Shut off all possible sources of ignition. Instruct others to keep a safe distance. Wear breathing apparatus, eye protection, laboratory coat, and nitrile rubber gloves. Cover the spill with a 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat... 

Small Quantities. Work in the fume hood. Wear eye protection, nitrile rubber gloves and laboratory coat. Place 6.0 g (7 mL, 0.107 mol) of acrolein in a 1 L, three-necked, round-bottom flask equipped with a thermometer, stirrer, and dropping funnel. Over a period of 10 minutes, add 50 mL of a solution of 63 g (0.4 mol) of potassium permanganate in 700 mL of water. If the purple color is not discharged, warm the mixture on steam bath until it becomes brown. Add the remainder of the permanganate solution at such a rate that the temperature does not exceed 45°C. When addition is complete, heat the mixture on the steam bath to 70-80°C, while stirring, for 1 hour. Cool the mixture to room temperature, and acidify to pH 1 with 3 M sulfuric acid (16 mL of concentrated acid cautiously added to 84 mL of cold water). Add solid sodium bisulfite, while stirring, until a colorless solution is produced. Wash the solution into the drain with water.7... 

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... 

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