HAZARDOUS MATERIALS
Question 1. Which of the following statements is INCORRECT regarding Teflon?
Teflon is reactive to corrosive acids.
Teflon is heat resistant.
Teflon is used in pacemakers and dentures.
Teflon is made from tetrafluoroethylene.
Question 2. The reaction between purified wood pulp and sodium hydroxide followed by chemical treatment of carbon disulfide forms what product?
Linen
Mercerized cotton
Rayon
Silk
Question 3. What polymeric material is mainly used by the police and military as the body armor in vests and helmets?
Nomex
Kevlar
Natural rubber
GORE-TEX
Question 4. Polyester is the result of what kind of reaction?
Organic acids and carbon-based materials
An oxygen-reduction reaction
Benzene and acetone
Condensation polymerization reaction
Question 5. What precaution is taken to warn firefighters or emergency responders of the presence of a substance that may autopolymerize?
An A is sometimes imprinted in the bottommost quadrant of the NFPA hazard diamond posted on the tank in which the substance is stored.
A P is sometimes imprinted in the bottommost quadrant of the NFPA hazard diamond posted on the tank in which the substance is stored.
An inhibitor is added to stabilize the material against autoplymerization.
The storage tank is marked stabilized.
Question 6. Hydrogen cyanide is formed from the combustion of polyurethane and may pose an inhalation hazard. One study of polyurethane combustion indicated that the maximum yield of hydrogen cyanide per gram of polyurethane foam ranged from 0.5 to 1.05 milligrams under flaming conditions. Using this study, what is the possible maximum milligrams of hydrogen cyanide that is formed when 5 kilograms of polyurethane foam is burned during a fire incident? __________.
Question 7. The term rubber refers to any of the natural or synthetic polymers having two main properties: deformation under strain and elastic recovery after vul¬canization. These polymers are called __________.
Question 8. A known human carcinogen that is used in the production of polychloroprene is called __________.
Question 9. A substance that is added to a polymerization tank to prevent or reduce the speed of autopolymerization is called 1) __________. One specific chemical that is used for this purpose is 2) __________.
Question 10. At a polymeric fire scene, the gases formed depend on the chemical nature of the polymers that have burned or undergone thermal decomposition. Natural polymers having an animal origin contain proteins which in turn are composed of amino acids. Of concern are two amino acids (methionnc and cysteine) as they produce the toxic gases 1) __________ upon decomposition and 2) __________ upon combustion.