{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture2510fb - Chemistry 83/07/10 Adverse Effects of...

Info icon This preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Chemistry 83 4/22/10 1 Adverse Effects of Current Technologies on Humans Laws that protect society: OHSA, CPSA, HMTA, EPCRA, TRI Hazardous Substances in the Chemical Manufacturing Industry Hazardous substances are materials that can pose a short-term or long-term danger to personal health or the environment if they are not properly managed (contained) World production of commercial chemicals is about 300 M tons of 100,000 different substances/yr, of which only 5000 are considered to be hazardous
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Chemistry 83 4/22/10 2 Laws that protect citizens from hazardous substances O ccupational S afety and H ealth A ct (OSHA, ʻ 70) regulates safe use and storage of chemicals in workplace, implemented by Department of Labor [http://www.epa.gov/reg5oopa/defs/html/osha.htm] C onsumer P roduct S afety A ct (CPSA, ʻ 72) protect the public "against unreasonable risks of injuries associated with consumer products.” [http://www.cpsc.gov/about/faq.html)] H azardous M aterials T ransportation A ct (HMTA, ʻ 75) regulates safe transportation of chemicals, implemented by Department of Transportation [http://safety.science.tamu.edu/dot.html] E mergency P lanning and C ommunity R ight-to-Know A ct (EPCRA, ʻ 86): requires manufacturers to inform communities of hazards and to work with citizens to provide plans for possible emergencies. T oxics R elease I nventory (TRI, ʻ 88): requires companies to disclose information about amounts of toxic chemicals they release into the air and water and dispose of on land. Types of Hazards and OSHA Warning Label OSHA defines four types of hazards in a diamond- shaped warning label http://www.uigi.com/nfpa_labelcode.gif http://www.hclco.com/images/34a.gif
Image of page 2
Chemistry 83 4/22/10 3 U.N. has proposed universal hazard labels that are based on pictograms http://www.uwm.edu/Dept/EHSRM/HAZCOM/special.html The following slides briefly describe each of these types of hazardous substances. Flammable Hazard Flammable - describes any solid, liquid or vapor that ignites easily and burns rapidly Fire can destroy tissue and/or release toxic gases http://www.ccohs.ca/oshanswers/chemicals/flammable/flam.html
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Chemistry 83 4/22/10 4 Reactive hazard A chemical explosive is a compound or a mixture of compounds that decomposes rapidly to produce large amounts of heat and to produce an increase in moles of gases The force of explosion is due to a large increase in gas volume that occurs rapidly (10-25K ft/sec) Example: 2NI 3 (s) ! N 2 (g) + 3I 2 (g) – The greater the increase in moles of gases, the greater the volume of gases available for expansion – The more moles of N 2 , the more heat to expand volume http://www.globalsecurity.org/military/systems/munitions/explosives.htm http://en.wikipedia.org/wiki/Trinitrotoluene High Molecular
Image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern