how can i pack  hygroscopic chemical ? what type of packaging materail?
969203
hi!\nYou can keep hygroscopic chemical in a bottle with tightly caped and seal with teflon tape. Store the bottle in a box containing sodium sulphate/descicating material.
700891
Well.......here goes. This experiment relies on the solvent solution being absorbed into the paper, and climbing upwards. This then allows the separation of the test material / substance, which follows the solvent solution. Most solvents will quickly evaporate when introduced to the air, so for more accurate results, and an overall truer picture, the container should be sealed.
545619
fill the container's base with adhesives
321886
Yes, check the state's website and http://packing.org
933723
You don't need a chemical reaction.\nFrozen carbon dioxide, known as dry ice, can do the job.\nIt's in a thermos container, but as soon as it touches the air, it sublimates into gaz, producing the smoke. (To make more, put it in water instead.)  And it's heavier than air, so it stays close to the ground.  And it's not expensive!
1079987
No safe way to do it.  Distillation perhaps, but that's not safe as sulphate fumes are not that good for you.  \n\nGrab the stock bottle and make up a fresh solution.
324137
ask them at http://packing.org
602307
add moisture to a room
503195
what size are we talking here? small use some of that packing material and use a exacto (sp) knife to form, shape sides roof , put it together with something that won't melt the Styrofoam
832784
Filter the solid out of the mother liquor and let it air dry or store it in an open container in a dessicator or bake it in an oven or...\nyou get the idea.
28721
Googling around to equipment manufacturers, what I'm finding makes it look like they are heat sealed, so I'm assuming that it has to be a melting glue. It also has to be non-toxic since it is a food product.\n\nThe site below has fill-your-own bags that are pre-glued and sealed with and iron.
263954
Charcoal (activated charcoal) is a good bet.  It satisfies your requirements. If you heat it up, it will bake out some of the chemicals and moisture it absorbed.  It won't be as efficient in repeated uses, but this procedure can allow it to be reused.  Just bake it out under a fume hood, or -- even better -- in an evacuated oven.
1001647
Make a box of strong glass or reinforced cardboard. Put the mobile inside it and use a vacuum cleaner to suck the air out of the box. Make it airtight. Thats it.
4788
Best method if practical is to freeze it.\nIf not sealed within a steralized container.
1157570
Welding rods are usually sold in air tight containers. Once they are open, the coating will tend to absorb moisture. Any procedure that will exclude atomspheric moisture is okay. \n\nI have seen jobs where they used an old refrigerator with a couple of 100 watts light bulbs inside to maintain some warmth.
798089
hard candy\ngift warp\ntape, scotch and the wide one for sealing cartons 4 ups as well as grey tape and electrical tape\nbatteries\nplastic containers\ndish liquid\ncleanser\nbleach\nwall calendars\nThrow away tools like paint brushes, box cutters, sand paper, paint roller sleeves\noh and scented & regular candles\ngreeting cards\npens \nenvelopes
802577
use any disinfectant with a high commercial grade. but use a mask and hand gloves when handling these things. if you have kids send them to your moms house or sisters. and leave it to air dry.