Guest guest Posted September 20, 2008 Report Share Posted September 20, 2008 dear all, jai gurudev, plz point again and again read this masseges ....... ok MERCURY. Beware of any process involving distillation of mercury unless you have had extensive training in such techniques and possess a fume hood and relevant equipment. Mercury is no substance for the kitchen table chemist! Never handle it with bare hands. It may be fun but you'll absorb small amounts which accumulate until they reach harmful levels. Should you spill any, collect it immediately, you can absorb it in small quantities using a sponge. Squeeze the metal from the sponge into a jar containing some water, cover, and set aside. Do not dispose off down the sink, try selling to a scrap dealer instead. Same applies with broken thermometers, sponge up any spillage and put the lot, along with broken thermometer bits, into your water jar. Remember that despite its apparent solidity mercury is highly volatile and you can easily inhale the toxic fumes. ...........oh... ACIDS. Never forget the old dictum inscribed on Enoch's pillars (maybe) and in every sane textbook. ADD ACID TO WATER...NEVER WATER TO ACID! Why? The water will heat up rapidly in contact with the denser acid and things will start spurting around your wife/mother's kitchen and all over YOU. And do add that acid very slowly to the water with full precautions. Can't do without acids but handle them with care. Wear a full face visor, (you can buy those as industrial face protectors), rubber gloves, and a plastic or rubber apron. You'll look odd but not half as much as you would with half your face burned off! If you must use hydrofluoric acid be especially careful, this stuff can eat through glass. If it gets on your skin it is very difficult to remove completely and can cause severe ulceration. Glacial acetic acid's fumes are enough to spot preserve living tissue cells, imagine what it will do to the inner lining of your lungs if you inhale it. It's not just extra strong vinegar. Should you accidentally splash any acid on your bare skin don't panic, wash it away immediately with lots of cold running water. If you're a chem freak don't even think about preparing a neutralising agent. The professor of inorganic chemistry at the University of Edinburgh in the late 40's had a drop of sulphuric acid spurt into his eye. To show off to his students he calculated the relevant amount of neutralising agent required and washed the acid out. He neutralised the acid O.K. but lost his bloody eye! Cold water, running fast O.K.? If you spill the stuff once again don't panic. Keep a bag of kitty litter around, unused naturally. If you've a neutralising agent handy such as bicarbonate of soda, or even ground chalk, scatter this liberally over the acid. No matter what you do you've ruined the floor already. Scatter kitty litter very liberally over the neutralised acid until it's all absorbed. Put on those rubber gloves and carefully sweep the lot into a plastic dust pan. Pour into a plastic bag, and dump. Wash what's left off the floor area very thoroughly with a squeezy mop and lashings of water and hope nobody notices the mess that's left. Blame it on the cat. If you must dispose of acid the acid to water rule can be suspended. Put on that visor and the gloves and get your cold water tap running fast, but not spraying around. Very carefully and slowly trickle small quantities of your acid into the water, be very very slow and careful with this process and you'll be all right. i know if u use this all tips so u safe dear in ur procedure.......ok urs a.k.nikhil Quote Link to comment Share on other sites More sharing options...
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