Plastics sodium hypochlorite

Aqueous solutions of ammonium salts. Wear nitrile rubber gloves, laboratory coat, eye protection, and self-contained breathing apparatus. Cover the spill with a 1 1 1 mixture by weight of sodium carbonate, clay cat litter (calcium bentonite), and sand. When all of the liquid has been absorbed, scoop the mixture into a plastic pail and place in the fume hood. Add sufficient 1% aqueous sodium hydroxide solution to dissolve the sodium carbonate in the spill mix and to ensure that the liquid is basic. Estimate the volume of ammonium sulfide solution that was spilled and add 200 mL of household chlorine bleach containing 5.25% sodium hypochlorite for each 10 mL of commercial ammonium sulfide solution (commercial ammonium sulfide solution is about 20% this volume of bleach allows a 25% excess). Allow the mixture to stand in the fume hood overnight and decant the liquid into the drain. Dispose of the solid (sand and calcium bentonite) in normal refuse.3,4... 

Wear breathing apparatus, eye protection, laboratory coat, and butyl rubber gloves. Cover spill with 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite), and sand.8 For each 1 mL of iron pentacarbonyl, place 45-50 mL of household bleach (about 5% sodium hypochlorite solution) in a plastic bucket equipped with a stirrer and located in a fume hood. Dilute the bleach with three times its volume of water and, to this solution, slowly add the contaminated spill mix while stirring. Continue the stirring for a period of 48 hours, and then filter the slurry using vacuum filtration. The... 

To a plastic bucket (10 L), add sodium hypochlorite solution (500 mL) and liquid soap (10 mL) and make up to two-thirds full with hot water. This solution will be used at the end of the procedure to dispose of the waste and decontaminate used equipment. 

Sodium hypochlorite is available in solution form in strengths of 1.5 to 15% with 3% the usual maximum strength. The solution decomposes readily at high concentrations. Because it is also affected by heat and light, it must be stored in a cool dry place and in corrosion-resistant containers. The solution should be transported in plastic pipes. Sodium hypochlorite can contain 5 to 15% available chlorine. 

Example 17.4 A solution of sodium hypochlorite containing 50 kg of NaOCl is stored in a transparent plastic container. It had been stored outdoors for quite some time and then used to disinfect a swimming pool. How effective is the disinfection What material is used instead for the disinfection And how many kilograms is it ... 

As a general rule, and for safety reasons, only well experienced personnel should be allowed to work with neurotoxins. For the experiments with neurotoxins the investigator should wear gloves and avoid using any material that could cause injuries such as needles, glassware etc. Any material that has been in contact with the solutions containing the neurotoxins is rinsed in concentrated sodium hypochlorite and collected in a plastic container. At the end of the experiment the container is autoclaved for 20 min at 120°C to inactivate completely the toxin that might possibly remain on the material. 

Sodium hypochlorite solutions lose their disinfecting (oxidizing) power during storage, and thus should be stored in a cool, dark, dry area. No more than a 1-mo supply of the chemical should be purchased at one time to prevent loss of available chlorine. The material is supplied in glass or plastic bottles, carboys, or lined drums ranging in... 

Ammonia gas is injected into treated water using systems and equipment similar to those used for chlorine gas. Aqua ammonia is handled using systems similar to those used for sodium hypochlorite. This form of ammonia is basic and has a strong odor, but is not corrosive. For ammonium sulfate powder, a 25-30% solution is prepared in a plastic or fiberglass container and added to the water by means of a chemical metering pump. Equipment similar to that used for handling calcium hypochlorite can be used for this process. Solutions of ammonium sulfate are stable, but acidic, and, therefore, corrosive to some metals. Materials that withstand dilute sulfuric acid will also withstand the corrosion effects of dilute ammonium sulfate solutions. 

Contaminated clothing should be removed and sealed in a plastic bag. Disposable rubber gloves should be used when handling contaminated clothes. The eyes should be irrigated copiously with saline for 15-20 min. Contaminated skin should be washed thoroughly with copious amounts of water, alkaline soap and water, a mildly alkaline solution (sodium bicarbonate or sodium carbonate), or mild liquid soap and water. The use of sodium hypochlorite solution will exacerbate the skin lesions and should not be employed. Only a saline irrigation should be used over vesiculated skin. 

Applying Liquid bleaches containing sodium hypochlorite are often sold in opaque, plastic containers because sunlight causes the compound to decompose to produce oxygen gas and sodium chloride. Write the balanced chemical equation for this reaction. 

ACIDE OXALIQUE (French) (144-62-7) Combustible solid. Violent reaction with strong oxidizers, bromine, furfuryl alcohol, hydrogen peroxide (90%), phosphorus trichloride, silver powders, sodium chlorite, sodium hypochlorite. Mixture with some silver compounds forms explosive salts of silver oxalate. Incompatible with caustics, mercury, silver, urea. Attacks polyvinyl alcohol and acetal plastics. 

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