i need the description of 18 hazardous material?
362535
Why 18?  Why not 17, 19, or 278?  If you want that kind of info, I suggest Google.  I guarantee you that you will find info on numerous haz mats.
732035
Containment/Cleanup\n\nDon gloves, eye protection, lab coat, etc. \nContain and absorb spill using absorbents appropriate for the material \nProtect floor drains from contamination, by putting absorbents or barriers around them \nPackage and label waste. Include contaminated clothes, rags, equipment, etc. \nStore temporarily in a fume hood is material is volatile
1118503
Classification depends on who is asking. This one sounds like a Controlled Substance classification - the answer lies somewhere in the volatility/toxicity/flammability index. You should be able to find most substances in an OSHA manual.
366793
lots of materials' properties can be found. you can try this link..
356905
http://www.disastercenter.com/crime/uscrime.htm\n\nhttp://www.fbi.gov/ucr/ucr.htm\n\nFor the FBI link, scroll down, select a year, and then a compilation of charts can be found on the left of the year you selected's page.  The different charts organize the information in diverse ways.\n\nhttp://www.whitehouse.gov/fsbr/crime.html
736823
You need to specify what kind of propellent: eg, smokeless powder, solid rocket fuel, spray paint propellent, etc.
733414
1 Aluminum (III) Oxide\n\n2 Iron (II) Sulfide\n\n3 Silver (I) Nitrate\n\n4 Tin (IV) Nitrate\n\n5 Carbon Monoxide\n\n6 Magnesium Sulfide\n\n7 Lead (II) Oxide\n\n9(8?) Sulfur Hexafluoride\n\n10 Mercury (I) Chloride
178896
For a professional description check the CDC site
686129
C2H2 - acetylene\nC2H6 - ethane\nCH4 - methane\nC8H18 - octane\nC2H3OH - ethanol\nthis list is a mile long
1048381
if you mean trash then there are too many to list but the main categories are :  paper, glass, plastic, organic (food, plant, fabric), \n\nif you mean something else I don't know what you are talking about.
1136335
http://www.ioga.com/Special/crudeoil_Hist.htm\nThat should help.
570537
http://nccic.acf.hhs.gov/afterschool/SupplyDemand.htm
741671
try the information on this website. http://www.epa.gov/oust/cat/sve1.htm
467112
Guns, handguns, Bombs, Nuclear weapons, and other weapons
829046
SrSe\nK2O\nCa3N2\nCoI3\n\nthe numbers should be subscripts
148827
Cyanide, arsenic, mercury, pesticides...
941954
If you are looking for properties of some specific chemical then search for MSDS (Material Safety Dada Sheet) for that particular chemical in Google or Yahoo search engines.\nHere, I am giving you a list of websites which can give you general information on symbols. There will be slight variation in the depth of descriptive material depending on site to site.\nYou can copy and paste following links in your browser's address line:\n(1) www.geocities.com/david_charles_curran/safety\n(2) http://en.wikipedia.org/wiki/Hazard_symbol\n(3) http://www.hse.gov.uk/chip/phrases.htm\n(4) http://www.chem.utoronto.ca/healthsafety/guide/symbols.htm