1. SAFETY

2. Four Routes of Entry for Chemical Exposure 1.Inhalation 2.Ingestion 3.Absorption 4.Injection

3. HOW DO WE PROTECT OURSELVES? KNOWLEDGE & USING THE PROPER SAFETY EQUIPMENT/ PROCEDURES (Note: not all gloves are chemically resistant!!!)

4. Four Routes of Entry for Chemical Exposure How do you avoid exposure by each route? 1.Inhalation use fume hood; “waft” don’t sniff… (also, HEPA & charcoal filters) 2.Ingestion don’t eat/ drink/ chew gum in lab! 3.Absorption wear goggles & chem-resistant gloves 4.Injection be careful when handling glass objects

5. Re: GLOVES! Non-airborne: gloves: PVC-vinyl (almost useless)-some are butadienechemically butyl rubberresistant to certain nitrile (8 hours)things but not neoprene (2 hours)others… natural rubber/ latex? (12 min) goggles, lab apron/ coat, closed shoes….

6. Filters for airborne contaminants: PARTICLES Use HEPA filters “high-efficiency particulate air” It’s a mechanical filter/ strainer… (99.97% of 0.3 micron particles)

7. Filters for airborne contaminants: MOLECULAR: *very small! Use Charcoal filters (must replace cartridges!) –it chemical grabs/ binds to contaminants… If you tried to use a mechanical filter, you wouldn’t be able to breath!!!

8. Where do we find information about a chemical? CAS # Chemical Abstract Service # Can use CAS# with http://www.chemfinder.comhttp://www.chemfinder.com MSDS Material Safety Data Sheet http://www.sciencelab.com/msdsList.php http://www.sciencelab.com/msdsList.php http://www.flinnsci.com/search_MSDS.asp OSHA Occupational Safety and Health Administration http://www.osha.gov/ http://www.osha.gov/ NFPA code National Fire Protection Association

9. Why CAS #? 2-(hexyloxy)-ethanol, 2-Hexoxyethanol; Ethylene glycol monohexyl ether; 2-Hexyloxyethanol, Ethylene glycol n-hexyl ether CAS # 000112-25-4 -a unique number for each chemical! Structure: HO-CH 2 -CH 2 -O-CH 2 -CH 2 -CH 2 -CH 2 -CH 2 -CH 3 Hazards: (from Household Products Database: http://hpd.nlm.nih.gov/index.htm Dept of health and human services):http://hpd.nlm.nih.gov/index.htm -Central nervous depression, kidney damage

10. You try: WINDEX CAS #’s? Water Isopropanol 2-Butoxyethanol Ammonia Ethylene glycol n-hexyl ether

11. MSDS Must contain 3 things: 1.Contact of company in U.S. (address & phone) 2.Hazard Info 3.CAS # -put out by company—no “standard” format (YET….)

12. NFPA code

13. IMPORTANT VOCABULARY volatile oxidizer alkali corrosive carcinogen mutagen teratogen