Fw: dry ice info
- Thought I'd pass this article along for anyone else who is interested.
> >From dryiceinfo.comatmosphere.
> The Web's leading source of
> Information about Dry Ice
> Dry Ice is frozen carbon dioxide, a normal part of our earth's
> It is the gas that we exhale during breathing and the gas that plants usein
> photosynthesis. It is also the same gas commonly added to water to makesoda
> water. Dry Ice is particularly useful for freezing, and keeping thingsis
> frozen because of its very cold temperature: -109.3°F or -78.5°C. Dry Ice
> widely used because it is simple to convert to its frozen form and easy toas
> handle using insulated gloves. Dry Ice changes directly from a solid to a
> gas -sublimation- in normal atmospheric conditions without going through a
> wet liquid stage.
> As a general rule, Dry Ice will sublimate at a rate of five to ten pounds
> every 24 hours in a typical ice chest. This sublimation continues from the
> time of purchase, therefore, pick up Dry Ice as close to the time needed
> possible. Bring an ice chest or some other insulated container to hold theIce!
> Dry Ice and slow the sublimation rate. Dry Ice sublimates faster than
> regular ice melts but will extend the life of regular ice.
> It is best not to store Dry Ice in your freezer because your freezer's
> thermostat will shut off the freezer due to the extreme cold of the Dry
> Of course if the freezer is broken, Dry Ice will save all your frozengoods.
> "SPECIAL EFFECTS"
> DRY ICE FOG
> Dry Ice when combined with hot tap water can produce vigorous bubbling
> and voluminous flowing fog. For example, with 5 pounds of Dry Ice in 4 to5
> gallons of hot water, the greatest amount of fog will be produced thefirst
> 5 to 10 minutes. There will be far less fog for the next 5 to 10 minutesas
> the water cools down and the volume of Dry Ice diminishes. As the waterIce
> cools, the fog becomes wispier. Dry Ice makes fog because of its cold
> temperature, -109.3°F or -78.5°C, immersed in hot water, creates a true
> water vapor cloud of fog. When the water gets colder than 50°F, the Dry
> stops making fog, but continues to sublimate and bubble. The fog will lastgallons
> longer on a damp day than on a dry day.
> HOW TO MAKE FOG
> For each 15-minute period put 5 to 10 pounds of Dry Ice into 4 to 8
> of hot water. This will make lots of fog depending upon the temperature ofmore
> the water and the size of the pieces of Dry Ice. Hotter water will make
> fog. Very hot water will add its own rising steam to the vapor cloud. Ifof
> there is no steam the fog will flow down hill and in the direction of any
> air movement. A small fan can help control the direction. Smaller pieces
> Dry Ice with more surface area produce more volume of fog and cool thewater
> down much faster. In both cases the result is more fog for a shorteramount
> of time. Keep the water hot with a hot plate, electric skillet, or somewater
> other heat source to produce fog for a longer time. Otherwise when the
> gets too cold it must be replaced to continue the fog effects. If thefloors
> container is completely filled with water the fog will flow over the sides
> the best. But the Dry Ice sublimation will vigorously bubble the water and
> splash it out. Even a 3/4 filled container will splash some so place the
> container where spilled water will not ruin anything. The water vapor fog
> will also dampen the area it flows across. Be careful because in time
> could get slippery.the
> POOL & JACUZZI
> 50 to 100 pounds of Dry Ice dropped directly into a heated swimming pool
> will make fog for several hours depending on the water temperature and the
> size of the Dry Ice pieces. Because of the Jacuzzi's hot water, it makes
> most fog the quickest. As long as the water is kept hot, it can take 50 todays.
> 100 pounds per hour. The Dry Ice will carbonate the water for several
> If possible drain the Jacuzzi. The swimming pool will read more alkalineor
> during this time so wait to add acid until the carbonation has dissipated.
> If the temperature of the water in a swimming pool, fountain, waterfall,
> birdbath is too cold (less than 60°F) the Dry Ice will bubble but produceIce
> much less fog.
> Witches Punch 3 to 5 lbs Up to 1/2 an hour
> Pumpkins 3 to 5 lbs Up to 1/2 an hour
> Witches Pot 5 to 15 lbs Up to an 3/4 hour
> Small Room (Use 2 Pots) 15 to 30 lbs Up to an hour
> Large Room (Use 3-4 Pots) 50 lb package Up to an hour
> Swimming Pool (unheated) 50 lb package 1 to 2 hours
> Patio (No Wind) 50 to 100 lbs 1 to 2 hours
> HOW TO TRANSPORT AND STORE DRY ICE UNTIL READY TO USE
> The best container to transport and store Dry Ice is an ice chest. It will
> still sublimate 5 to 10 pounds each 24 hours, so plan to pick up the Dry
> as close as possible to the time it will be used. Dry Ice is very cold sorefrigerator
> use insulated gloves to handle it. Do not store Dry Ice in your
> freezer. The extremely cold temperature will cause your thermostat to turnairtight
> off your freezer. (But it will keep things frozen if your refrigerator
> breaks down in an emergency.) Do not store Dry Ice in a completely
> container. The sublimation of Dry Ice to Carbon Dioxide gas will cause anymust
> airtight container to expand until a hole opens or it explodes.
> ADD DRY ICE TO BEVERAGES
> It is OK to put Dry Ice into beverages for drinking. Use 2 to 4 pounds of
> Dry Ice for each gallon of room temperature punch. Use large pieces of Dry
> Ice not small pieces. The Dry Ice is heavier than ice and will sink to the
> bottom. Do not use any regular ice! The Dry Ice will do the cooling and
> not be eaten or swallowed. Too much Dry Ice will freeze the beverage sohave
> extra standing by. It will bubble and give off the most fog when the3-5
> beverage is room temperature. When most of the Dry Ice has sublimated, it
> will surround itself with ice and float to the top. There is still a small
> piece of Dry Ice in the center of these ice pieces so do not serve or eat
> them. Carefully ladle the beverage into drinking glasses without any Dry
> Ice. Add regular ice to glasses for cooler drinks.
> WITCHES BREW
> A first grade teacher gave me the best recipe for "witches brew": 1 can
> Grape Juice. (Dark color) 1 can Pineapple Juice. (Strange pulpy texture)
> pounds of Dry Ice. (Do not use regular ice) Mix room temperature juicesIce
> together. When ready for special brew add the Dry Ice. Do not touch Dry
> directly, but use insulated gloves or tongs. Ladle juice into cups withoutice
> any Dry Ice and it will be perfectly safe. If you want cooler drinks add
> to the cups not the punch bowl.in
> STAGE PRODUCTIONS
> Using a fog machine or buckets of hot water and a fan, many shows are
> enhanced by adding flowing fog. I have seen it most often in the dance of
> the snowflake fairies in the Nutcracker Suite, and it is frequently used
> Brigadoon and Oklahoma for their dream scenes.water
> FOG MACHINES
> A theater fog machine is generally a 30 to 55-gallon metal or plastic
> barrel with a 110-volt or a 220-volt hot water heater to keep the waterhot.
> Dry Ice is placed in a bucket with holes to allow hot water to enter. Whendisposal.
> the bucket is lowered into the hot water fog is instantly produced. The
> resulting water vapor fog is gently blown by a fan and directed to the
> desired area by an air duct tube. Fog stops whenever the bucket of Dry Ice
> is pulled out of the water.
> A fantastic simulated volcano can be made in a sink with a garbage
> Run hot water and put one to three pound pieces Dry Ice into your garbageand
> disposal. When you turn the disposal on it will make a marvelous eruption.
> See also Volcano in our "Science/School Projects" section.
> DRY ICE "FIRECRACKERS"
> Small pieces of Dry Ice placed in an empty one liter plastic soda bottle
> then filled 1/4 to 1/2 with hot water may explode 2 to 120 seconds afterthe
> is tightly screwed on. It also may crack anywhere and just fizzle. Ware
> gloves and eye protection because the resulting explosion may dangerously
> push out pieces of the plastic bottle or the bottle top. A woman in
> standing too close lost her eye from the ejected bottle top, so make sureno
> one is holding the bottle nor anyone is near it when it explodes. Althoughdays
> the explosion sprays mostly carbon dioxide gas and water, many
> municipalities classify them with more dangerous firecrackers and outlaw
> them. Sometimes they are even called "terrorist devices" and people using
> them are arrested. In our area several teenagers were jailed for three
> for setting off these Dry Ice firecrackers. The logical defense explainsfrom
> there is no chemical reaction - only a change in the state of matter -
> a solid to a gas. Unfortunately there may be a high cost in lawyers feesto
> persuade a DA or judge of this fact. Therefore DO NOT DO THIS IF IT ISTHIS.
> ILLEGAL IN YOUR COMMUNITY! For safety DO NOT EVER ALLOW CHILDREN TO DO
> Always supervise children around Dry Ice. Of course using anything otherSouthern
> than plastic bottles is even more dangerous and by no means should ever be
> HONDA'S GULL WING CAR
> Honda put on a spectacular introduction of a concept car for their
> California car dealers. I created a wall of fog with four fog machines byshe
> placing two hoses three feet and two six feet above the ground five feet
> apart. The fog was so thick no one could see through it. A Newport Beach
> motorcycle policeman with lights flashing and siren blaring slowly drove
> through the wall of fog emerging in front of the dealers stand. The custom
> car came through next and stopped. The gull wing doors opened and a James
> Bond look-a-like in a full tux emerged from the car. An impeccably dressed
> cocktail waitress walked up and served him a martini. The applause and
> thanks afterward showed how much everyone was impressed.
> I STORED DRY ICE FOR ONE YEAR!
> One customer told us how sure she was that the paper bag full of left over
> Dry Ice from last year's Halloween would be available this year because
> had never opened the bag for the whole year. Unfortunately there was nodry
> ice left - empty inside - but there was plenty of hardened frost aroundthe
> outside of the bag frozen solid in the shape of a brick.they
> BAR MITZVAH
> I placed two fog machines at each corner of a wooden dance floor. When
> were turned on the floor was filled with fog. The kids came in andsashayed
> around for ten minutes until the fog machines were turned off. They werewere
> completely delighted. Later for several special dances the fog machines
> turned on again filling the dance floor with fog.devise
> SHIP ON STAGE
> Laguna Playhouse built a large 15-foot long ship for the final scene of a
> play. It was rolled out on stage with four actors on it. A mechanical
> rocked this ship back and forth. When the stage filled with fog and theThis
> curtains opened, it really looked like the ship was in the water gently
> rocking back and forth. The fog flowed around the ship and poured off the
> stage into the audience.
> CAMPING WITH DRY ICE
> Plan on using 10 to 20 pounds of dry ice for every 24-hour period
> depending upon the size of the ice chest. Dry Ice will keep everything
> frozen in this ice chest, including extra ice, so keep non-frozen goods to
> be refrigerated with regular ice in a separate ice chest. Dry Ice normally
> comes in 10-inch squares, 2 inches thick weighing about 10 pounds each
> square. Plan to put one square per each 15 inches of ice chest length.
> will work out to 2 squares (20 pounds) for an average 40-quart cooler. Forand
> larger containers and longer camping or traveling times, multiply dry ice
> quantities by these rates. Dry Ice, at -109.0°F or -78.5°C, will freeze
> keep frozen everything in its container until it is completely sublimated.been
> These frozen items will take some extra time to thaw because they have
> so cold.the
> HOW TO PACK DRY ICE
> If the Dry Ice is placed on top of the food (cold sinks), it will work
> better. However it is sometimes in the way so many people prefer to keep
> Dry Ice on the bottom of the ice chest for convenience. When packing itemsfiller.
> in the container fill the empty space with wadded newspaper or other
> Any "dead-air-space" will cause the Dry Ice to sublimate faster. The bestThe
> storage container is a three-inch thick urethane insulated box. Lining the
> inside of your ice chest with sheets of Styrofoam will double the life of
> Dry Ice. Dry Ice sublimation (changing from a solid to a gas) will vary
> depending on the temperature, air pressure and thickness of insulation.
> more Dry Ice you have stored in the container, the longer it will last.transported
> TRANSPORTING BY AUTO OR VAN
> Plan to pick up the Dry Ice as close to the time it is needed as possible.
> If possible pack insulating items such as sleeping bags around the ice
> chest. This will stretch the time of the Dry Ice lasts. If it is
> inside a car or van (not in the trunk) for more than 10 minutes make sureposition,
> there is fresh air. After 15 minutes with Dry Ice only in its paper bag in
> the passenger seat next to me, I started to breathe faster and faster as
> though I were running a race. I couldn't figure out why I was so out of
> breath until I saw the car air system was set in the re-circulated
> not fresh outside air.block
> HOW TO KEEP ICE FOR WEEKS
> I have a 100-quart Coleman that I pack before leaving with a 50-pound
> of dry ice and two 25-pound blocks of wet ice on either side of the dry.The
> dry ice is wrapped in many layers of newspaper, which is a marvelousin
> insulator. If the cooler is kept in the shade and covered with a heavy
> blanket, the dry ice will last from 8-10 days at which time the wet ice
> first begins to melt. This will then last another 4-5 days. I would be
> willing to bet that using David's method (burying the ice chest in sand)
> conjunction with mine would keep the wet ice available for 2-3 weeks.whole
> However, there is a downside. (1) Only frozen foods can be kept in the
> cooler until the dry ice is gone (no beer). (2) Lots of weight -- the
> shebang weighs 100 lbs. sans food. Dry Ice is very dense --- a 50 lb.block
> is the same size as a 25 lb. block of wet ice.in
> PHYSICAL DESCRIPTION
> Dry Ice is frozen carbon dioxide, a normal part of our earth's atmosphere.
> It is the gas that we exhale during breathing and the gas that plants use
> photosynthesis. It is also the same gas added to water to make soda water.widely
> Dry Ice is particularly useful for freezing, and keeping things frozen
> because of its very cold temperature: -109.3°F or -78.5°C. Dry Ice is
> used because it is simple to convert to its frozen form and easy to handleit
> using insulated gloves. Dry Ice changes directly from a solid to a
> gas -sublimating- in normal atmospheric conditions without going through a
> wet liquid stage.
> HOW DRY ICE IS MADE
> The first step in making dry ice is to compress carbon dioxide gas until
> liquefies, at the same time removing the excess heat. The C02 gas willby
> liquefy at a pressure of approximately 870 pounds per square inch at room
> temperature. Next, the pressure is reduced over the liquid carbon dioxide
> sending it through an expansion valve. Part of the liquid evaporates,dry
> causing the remainder to cool. As the temperature drops to -109.3°F, the
> temperature of frozen CO2, some of it will freeze into snowflakes. This
> ice snow is then compressed together under a large press to form blocks.Dry
> Ice is much heavier than traditional ice, weighing about double.carbon
> DRY ICE MAKERS
> Dry Ice machines are available in all sizes and use liquid CO2. Hand held
> ones make very soft Dry Ice that dissipates rapidly. Large commercial
> machines use hydraulic presses to compress the Dry Ice snow with up to 60
> Tons of pressure. It can produce a 50-pound block in 60 seconds.
> PHYSICAL PROPERTIES
> Critical Density
> 28.9855 LB/FT³
> Critical Pressure 1066.3 PSIA
> Critical Temperature 87.8°F
> Density Gas 0.1234 LB/FT³@32°F
> Density Liquid 63.69 LB/FT³@0°F
> Latent Heat of Vaporization 241 BTU/LB 0°F
> Molecular Weight 44.004
> Sublimation Temperature -109.3°F or -78.5°C
> Solubility in H20 79FT³ CO2 GAS/FT³ ( when H2O is at 32°F )
> Triple Point -69°F 75.1 PSIA
> Viscosity Gas 0.015 Centipoises @32°F
> Viscosity Liquid 0.14 Centipoises @0°F
> Chemical Formula CO2
> Chemical Family Inorganic
> Sublimation A pound of Dry Ice will sublimate into 8.3 cubic feet of
> dioxide gas.or
> DOT Shipping Class: ORM-A UN-1845 Pkg. Group III Class Nonflammable Gas
> SCHOOL PROJECTS
> Dry Ice can add the right touch to the typical school volcano. The "smoke"
> will come out the top and flow down the sides for several minutes. Inside
> the volcano must be a container to hold hot water. If hot water is not
> immediately available use a thermos to store it. The hotter the water is
> (nearly boiling if under adult supervision) the better. The bottom must be
> sealed tightly. Otherwise Dry Ice fog will leak out the bottom. Use putty
> some other sealant. At the time of eruption, use gloves and put smallpieces
> of Dry Ice into the hot water. The volcano will bubble and "smoke" forfelt
> several minutes.
> CLOUD CHAMBER
> An easy to make cloud chamber can be used to observe Alpha or Beta
> particles. Use a clear Pyrex or Corning shallow glass container that will
> not break in a freezer. Cover the bottom inside of the dish with black
> or black paper. Cut a piece of cardboard larger than the top of the dish.an
> Pour alcohol on one side of the cardboard. Place the cardboard on the dish
> with the wet side down. Heat the top cardboard with your hand or something
> else warm. Place the dish on a slab of Dry Ice. The alcohol will form a
> cloud. Shine a light through the side of the dish to observe vapor trails.
> Some natural vapor trails can be seen in time although you may have to put
> alcohol on the cardboard several times. Place an alpha ray source such as
> old fashion illuminated watch dial or a Coleman lantern mantel inside tosee
> more ion trails in the cloud chamber. Use a light source such as a brightproducing
> flashlight to see the cloud tracks better.
> A more sophisticated CLOUD CHAMBER is included in "Bizarre Stuff" . . . a
> great site for classic home science experiments.
> BAKING SODA
> Sodium hydrogen carbonate (NaHCO3), also called Sodium bicarbonate,
> bicarbonate of soda, and baking soda, is an important chemical. Hundred of
> thousands of tons are produced each year for use in baking and in
> other chemicals. One way to make this compound at home or in the schoolreal
> chemistry laboratory is to use Dry Ice, salt, ammonium carbonate, and
> You can make a miniature comet and watch as it sublimates--just like a
> comet being heated by the Sun! Make sure you have adult supervision. Thea
> materials you will need are Dry Ice (solid carbon dioxide), a large bowl,
> garbage bag, several smaller plastic bags, gloves, a hammer, water, sand,been
> and a few drops of ammonia. Buy about 3 pounds of Dry Ice. Be very careful
> in handling Dry Ice, and always wear gloves. Solid carbon dioxide is much
> colder than ice, and if it touches your skin it will hurt as if you had
> burned by fire. Use a plastic garbage bag to line a bowl big enough tohold
> a quart of water. Put two cups of water into the lined bowl. Add a couplehammer
> spoonfuls of sand. Sprinkle in a few drops of ammonia and stir the mixture
> well. Wearing gloves, wrap the dry ice in several plastic bags. Use a
> to pound the dry ice into small pieces. When the dry ice is crushed addfrozen,
> about two cups of it while stirring your comet "soup". Keep stirring while
> the dry ice freezes the water. When the mixture is almost completely
> lift it up using the plastic liner of your bowl and shape the wrappedcomet
> mixture into a ball. When the "comet" is frozen and can hold its shape on
> its own, unwrap it and set it somewhere you can watch it. The dry ice will
> sublimate into a gas. You may see jets of carbon dioxide shoot from your
> comet. After a while, your comet will shrink and become pitted, like a
> that has been eroded by the Sun. (Based on a Recipe by Dennis Schatz,it
> Pacific Science Center, Seattle, WA.)
> Another COMET project developed by UC Berkeley is called "Make a Comet in
> the Classroom"
> "DRY ICE INVESTIGATIONS" ** A Teachers Guide
> "This unit revolves around the intriguing nature of dry ice and the
> incessant curiosity it provokes in all those who have the opportunity to
> interact with it. Whenever science (especially chemistry) is depicted on
> film or television, you can almost guarantee that you'll see dry ice
> bubbling away in a colorful liquid. Music videos, scary movies, theatrical
> plays, and Halloween frequently feature its eerie heavy fog slowly and
> silently creeping across a surface. Although it is perhaps the ultimate
> symbol of "fun science," students rarely have the opportunity to explore
> themselves in science class, most likely because many teachers often don'tby
> know where to get it, don't know what to do with it, and are intimidated
> safety issues. This guide hopes to deal thoroughly with all these issues,memorable
> and to build on the wondrous appeal of dry ice to provide a highly
> and powerful science learning experience."making
> OTHER USES
> CARBONATE LIQUIDS
> When CO2 is added to plain water it will make sparkling mineral water. CO2
> is extensively used throughout the world in the beverage industry for
> soda pop.ounces
> HOME MADE ROOT BEER
> To make one gallon of root beer: One pound sugar One gallon water Two
> root beer extract Add 1 to 2 pounds of Dry Ice to carbonate Tip forair)
> carbonation: put in a triple size plastic container (1/3 liquid and 2/3
> and put the lid on tight. The pressure will dissolve more into the mix andlet
> make it fizzier. Otherwise have Club soda to add for carbonation. If you
> the root beer fog too much you will loose the carbonation. Bring severalkids
> pounds extra dry ice and put in as you are serving in order to let the
> see the fog affect. You must keep the root beer from freezing. Dry iceso
> is -109.3°F and it will freeze the liquid. Add extra water if freezing
> starts. Do not ladle Dry Ice into cups. Put ice directly into cups for
> additional cooling. For different ideas add dry ice to grape juice and
> pineapple juice for a goolish witches brew.
> DENTS & HAIL DAMAGE
> Dry Ice will condense metal and thereby shrink small dents on your car.
> Place the Dry Ice on the inside of the dent if possible. Use heavy gloves
> and press flat sheet against dent. If it is not possible to get on the
> inside concave part of the dent, then using heavy gloves hold the Dry Ice
> a corner can fit into the bottom lowest part of the cratered dent. Holdthe
> Dry Ice until the metal is frosted at least 2 inches beyond the dent. Letwill
> the metal warm up (in the sun is the best) and repeat the procedure.
> Sometimes the dent will pop out perfectly. More often it will not be
> possible to get a flat smooth finish, but the dent will be reduced
> noticeably. Creased metal will still show the crease line but the dent
> be far less pronounced. I have not seen any paint damage, but I'm sure ifbe
> the paint is not strongly adhered, it could peel away.
> REMOVE FLOOR TILE
> Dry Ice will loosen floor tile by freezing and slightly shrinking them
> allowing easier removal. Place the Dry Ice sheets centered on the tile to
> removed and wait until it is completely frosted. If it has not popped off,but
> slight tapping with a hammer or prying with a screwdriver will allow it to
> be lifted off easily. It is too time consuming to remove a whole floor,
> is ideal for removing a few tiles that need replacing.gopher
> GOPHER ERADICATION
> Dry Ice is heavier than air so it will find its way to the bottom of
> dwellings. Place 1 to 2 inch pieces as deep into each hole as can bereached
> without filling the front of the hole with dirt. If you miss some holesthe
> process may have to be repeated. Jerry Yamamoto of Hayward, Californiatoo
> reports that he successfully used Dry Ice to eradicate regular Argentine
> ants from his front yard. Perhaps this could work on fire ants too.
> PROTECT SPORT FISH AND GAME
> Pack your trophy animal or fish in Dry Ice to minimize spoilage while
> transporting or shipping it home. Do not let the Dry Ice touch the game
> directly as it may cause superficial damage. For best results use an
> insulated container.
> Dry Ice is used to super cool alcohol for branding horses, cattle, and
> hunting dogs. The alcohol must be 90% pure - not rubbing alcohol. Liquid
> Nitrogen is too cold to work properly. This is now the second most common
> way to brand according to Tony Clark of Basset, Nebraska.
> Doctors, to freeze skin for wart removal, use Dry Ice or liquid nitrogen.
> Many medical offices ship biological specimens in Dry Ice for laboratory
> testing or further processing.
> TRANSPORTING PLANTS
> Dry Ice will keep flowers cool and delay blooming. Maintaining ready to
> flower plants at 34°F will retard blooming. Do not allow Dry Ice to get
> close and freeze plants.fires.
> PLANT GROWTH
> Carbon Dioxide will increase the rate of plant growth.
> CHEMICAL RETARDANT
> Its low temperature slows or stops some chemical reactions. It is used to
> store and ship special adhesives It is also a neutralizing agent for
> PRESSURIZING AGENT
> When Dry Ice changes from a solid to a gas it absorbs heat and expands to
> 800 times its original volume.
> INERTING MEDIUM
> Dry Ice will replace oxygen in a container preventing or putting out
> It is used to safely remove underground gas storage tanks.Dry
> SHRINK FITTINGS
> Dry Ice will shrink metal to slide on sleeves, bushings or bearings. Add
> Ice to a 90% pure alcohol bath to create a cold liquid near -109.3°F. thatis
> can be used like liquid nitrogen.
> DEFLASHING MOLDED PLASTICS AND RUBBER
> Dry Ice will cool and shrink whatever it touches. Rubber parts are tumbled
> in a barrel with Dry Ice, making them brittle for easy flash removal. It
> used in cold grinding of Plexiglas, PVC resins and vinyl's.processing
> FRESH MEAT PROCESSING
> Dry Ice will keep the temperature cold and reduce spoilage while
> meat. This is used in industrial processing of ground meats and sausages.Dry
> CO2 may attract mosquitoes away from animals and people. Place pieces of
> Ice away from areas where people are congregating. This is an untestedis
> report for me, so give me some feedback by e-mail if it works. The theory
> that mosquitoes find animals and people by their CO2 exhaled duringsure
> breathing. If heat isn't also an attracter then it might work. I am not
> how, as cold as Dry Ice is, that it would work.
> Dry Ice combined with detergent, or alone, will improve porosity in
> irrigation wells. No further information in this area is available to me.
> Please e-mail me with process, quantities and results.
> BAKING INDUSTRY
> Dry Ice is used in mixing ingredients and retarding yeast growth until the
> proper time.