9b 1305M322QNRMA0017 Attachment 2 Banned Construction Materials List.pdf

UNITED STATES DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration Office of Oceanic and Atmospheric Research Global Monitoring Laboratory 325 Broadway - David Skaggs Research Center Boulder, Colorado 80305-3337

ABO Banned Construction Materials List:

(Current as of 2022)

• Chlorofluorocarbons (CFCs) Used as refrigerants, solvents, foam blowing agents, spray cans, and heat exchange medium (no longer manufactured in the U.S.)

Molecule: Name: Commonly known as:

CCl3F trichlorofluoromethane CFC-11, R-11, Freon-11 CCl2F2 dichlorodifluoromethane CFC-12, R-12, Freon-12 CClF3 chlorotrifluoromethane CFC-13, R-13, Freon-13 CCl2FCClF2 trichlorotrifluoroethane CFC-113, R-113, Freon-113

• Hydrochlorofluorocarbons (HCFCs) Used as refrigerants, solvents, foam blowing agents, spray cans, and heat exchange medium

Molecule: Name: Commonly known as:

CHCl2F dichlorofluoromethane HCFC-21, R-21 CHClF2 chlorodifluoromethane HCFC-22, R-22 C2HCl2F3 dichlorotrifluoroethane HCFC-123 CF3CHClF chlorotetrafluoroethane HCFC-124, R-124 CCl2FCH3 dichlorofluoroethane HCFC-141b, R-141b CClF2CH3 chlorodifluoroethane HCFC-142b, R-142b C2H2ClF3 chlorotrifluoroethane HCFC-133a

• Hydrofluorocarbons (HFCs) Used as refrigerants, foam blowing agents, and aerosol propellants (in spray cans)

Molecule: Name: Commonly known as:

CF3CH2F tetrafluoroethane HFC-134a, R-134a CH3CHF2 difluoroethane HFC-152a, R-152a CHF3 trifluoromethane HFC-23, R-23, Freon-23, fluoroform C2H3F3 trifluoroethane HFC-143a, R-143a CF3CHF2 pentafluoroethane HFC-125, R-125, Freon-125 CF3CH2CF2CH3 pentafluorobutane HFC-365mfc, R-365mfc C3H2F6 hexafluoropropane HFC-236fa C3H3F5 1,1,1,3,3-pentafluoropropane HFC-245fa C3HF7 heptafluoropropane HFC-227ea, R-227ea CH2F2 difluoromethane HFC-32, R-32 CF3CFCH2 2,3,3,3-tetrafluoropropene HFO-1234yf, R-1234yf, YF CF3CHCHF 1,3,3,3-tetrafluoro-1-propene HFO-1234ze, R-1234ze

* Or any refrigerant blends containing these chemicals above, such as:

R-404a, R-507a, R-410a, R-407c.

• Halons

Used in fire suppression and extinguishing systems Molecule: Name: Commonly known as:

CBrClF2 bromochlorodifluoromethane halon-1211 CBrF3 bromotrifluormethane halon-1301 C2Br2F4 dibromotetrafluoroethane halon-2402

• Chlorocarbons Used as solvents, cleaning agents, degreasing agents, and other less common applications Molecule: Name: Commonly known as:

CH3Cl chloromethane methyl chloride CH2Cl2 dichloromethane methylene chloride CHCl3 trichloromethane chloroform CCl4 tetrachloromethane carbon tetrachloride CH3CCl3 trichloroethane methyl chloroform C2H4Cl2 1,2-dichloroethane dichloroethane C2Cl4 tetrachloroethene perchloroethene (PCE) C2HCl4 trichloroethene TCE

• Bromocarbons Molecule: Name: Commonly known as:

CH3Br bromomethane methyl bromide CH2Br2 dibromomethane methylene bromide CHBr3 tribromomethane bromoform CH2BrCl bromochloroethane

• Iodocarbons

CH3I iodomethane methyl iodide

• Others

N2O nitrous oxide (common oxidizer) SF6 sulfur hexafluoride (used in electric transformers) COS carbonyl sulfide carbonyl sulfide C6H6 benzene benzene C3H2F4 tetrafluoroprop-1-ene HFO-1234yf SO2F2 sulfuryl fluoride Vikane, Zythor, ProFume NF3 nitrogen trifluoride nitrogen fluoride, trifluoramine C2F6 hexafluoro ethane carbon hexafluoride CF4 carbon tetrafluoride tetrafluoromethane

Typical construction applications for these banned compounds include: “blue-board” and “pink-board” insulation sheets (most contain HCFCs), blown foam insulation containing prohibited chemicals as ingredients and/or propellants, spray-can dusters, even ones that say “ozone-friendly”, and solvents/sealants/adhesives using prohibited chemicals (examples include glues, caulks, paints, paint thinner, liquid nail, etc).