Fume hood storage

The use of organic solvents in a clinical laboratory represents a potential fire hazard and hazards to health from inhalation of toxic vapors or skin contact. These solvents should be used m a fume hood. Storage of organic solvents is regulated by rules set down by OSHA (Table 1-16). However, some local fire department rules are more stringent. Solvents should be stored in an OSHA-approved metal storage cabinet that is properly vented. The maximum working volume of flam-... 

Handling, Storage, and Precautions handle with care like other alkyl azides due to the potential for explosions from shock or heat. Use in a fume hood. Storage under a nitrogen atmosphere and in a refrigerator is recommended. 

Handling, Storage, and Precautions pyridaziiie can cause eye, skin, and respiratory system irritation. Manipulate with caution under a fume hood. Storage in tightly closed container, in a dry and well-ventilated place. Routine safety precautions should be employed. 

Storage of uranium foil in closed containers in presence of air and water may produce a pyrophoric surface [1], Uranium must be machined in a fume hood because, apart from the radioactivity hazard, the swarf is easily ignited. The massive metal ignites at 600-700°C in air [2]. The finely divided reactive form of uranium produced by pyrolysis of the hydride is pyrophoric [3], while that produced as a slurry by reduction of uranium tetrachloride in dimethoxyethane by potassium-sodium alloy is not [4],... 

N HCL Store at room temperature in an acid storage area. Use in a fume hood. 

Another precaution is to avoid the use of plastic materials during storage, preparation of samples, and analysis, because plasticizers can contaminate the sample when organic solvents are present. As a safety concern, since there is no way to avoid exposure to organic solvents used in these procedures, all work should be performed in a fume hood to maintain a safe working environment. 

Sample Custodians determine from the COC Form whether a temperature blank has been enclosed with the samples. If a temperature blank has been enclosed, Sample Custodians remove the ice, the packing material, and the samples from the cooler and line them up on a receiving table or in a fume hood, if samples emanate odor. They measure the cooler temperature by inserting a thermometer into the temperature blank. If the blank is not present, they measure the temperature inside the cooler by placing a thermometer or an infrared temperature probe between sample containers. The temperature of the cooler upon arrival to the laboratory should be 2-6°C whether it has been measured inside the cooler or in the temperature blank. To document sample conditions upon arrival at the laboratory, laboratories record the cooler temperature on the COC Form or use a separate cooler receipt form, similar to one shown in Appendix 17. Samples are then placed in storage refrigerators or walk-in coolers kept at 2-6°C. 

Fmoc-deprotection After the reaction is complete, wash the membrane three times with DMF for at least 30 s each. For storage, wash the modified membrane at least twice with methanol or ethanol and dry it in the air stream of a fume hood or using a hair dryer without heat. For resumption of synthesis after storage, treat the membrane once with DMF for 20 min (see Note 5). The Fmoc-deprotection is carried out by treatment of the membrane twice with 20% piperidine in DMF for at least 5 min each. 

Use. It is important to wear gloves and safety glasses and to work in a fume hood If you do not have all of these items for safe use of HF, do not use HF as a cleaning material Pour the diluted HF from its plastic storage container into a plastic soaking tank (like a polypropylene beaker). Let the glassware soak in the HF for anywhere from 30 seconds to two minutes. Rinse for at least one minute (or five full flushes) with water. Then rinse with distilled or deionized water. The HF can be reused many times until a decrease in effectiveness is obvious. 

Extra Tip For an extra-tough stain, use a mixture of 3 mL of storage bottle strength (49%-52%) hydrofluoric acid to 100 mL of concentrated nitric acid. This solution should be used for only a minute or two at most and must be done in a fume hood. Use the same safety considerations that you would use for standard hydrofluoric acid.7... 

Solid iodine is corrosive to the skin handle it with care if it is necessary to make up your own stock solutions. Iodine solutions can cause bad stains, but if handled properly, they are not a significant health hazard. The important safety precautions are (1) Do not pipette by mouth, as already stressed in the procedure above (2) store CCI4 liquid and solutions ofli in CCI4 in a fume hood and carry out all transfers from the stock bottle to a stoppered flask in this hood and (3) dispose of waste materials properly, i.e., place used CCI4 in a storage bottle kept in the hood. 

Storage and Handling Keep cool, away from heat sources. Maintain good ventilation. Work in a fume hood or with closed system if possible otherwise, use adequate ventilation so that the odor of allyl chloride does not persist. If it should be necessary to enter an area in which the odor of allyl chloride is at all noticeable, use a gas mask equipped with an organic vapor ... 

Handling, Storage, and Precautions can be stored in air for days with little decomposition. The solid is best stored under nitrogen for long periods of time. More air sensitive when in solution, especially chlorinated hydrocarbons. Like all metal carbonyls, it is best handled in a fume hood. 

Handling, Storage, and Precautions no special information available. In general, however, it is advisable that all reactions with this reagent be conducted in a well ventilated fume hood. Care should be exercised to avoid contact of this reagent and the derived oxazaborolidine catalyst with the eyes and skin. 

Handling, Storage, and Precautions the p-lactones (l)-(3) are stable for many months at 4°C in dry form. Neutral or slightly acidic solutions of (1) and (2) are stable for at least 1 day (3) must be used in situ basic and strongly acidic solutions rapidly decompose these p-lactones. They should be handled in a fume hood. 

Handling, Storage, and Precautions store under argon in freezer stable as solid solutions are air sensitive. Literature describes the use of perchlorate salts but their use cannot be recommended due to risk of detonation. Use in a fume hood. 

Handling, Storage, and Precautions toxicity unknown as with all organic chemicals, use only in a well-ventilated fume hood is recommended. 

Handling, Storage, and Precautions irritant use only in a fume hood. 

Preparative Methods can be prepared by treatment of (iJ)-3,3 -bis(triphenylsilyl)binaphthol in CH2CI2 or toluene with a 1 M hexane solution of Trimethylaluminum room temperature for 1-2 h. This reagent can be also generated in situ by discrimination of its racemates with optically active (—)-bromocamphor. Handling, Storage, and Precautions the dry solid and solutions are highly flammable and must be handled in the absence of oxygen and moisture. The solution should be used as prepared for best results. Use in a fume hood. 

Preparative Methods by hydrogenation (5% Rh/C) of optically pure (2-anisyl)phenylmethylphosphine oxide followed by reduction of the phosphine oxide with Trichlorosilane Handling, Storage, and Precautions readily oxidized to the phosphine oxide and should be handled under N2 or Ar. This reagent should be handled in a fume hood. 

Handling, Storage, and Precautions should only be handled in a well ventilated fume hood because of its low permissible exposure limit of 2 ppm and reports of allergic skin reactions and lung, liver, and kidney damage. MSDSs are available from the two principal manufacturers (Dow and Shell). The material is not moisture or air sensitive. 

Handling, Storage, and Precautions mutagenicity via reactions with biological nucleophiles has been assessed by using the Ames test in Salmonella typhimurium and by analysis of in vivo chromosomal aberrations. (S)-(l) was more mutagenic than (R)-(l). Use in a fume hood. 

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