ACH : air changes per hour
BMC : Benchmark Concentration
BMD : Benchmark Dose
CAS : Chemical Abstracts Service
CCPA : Canadian Chemical Producers' Association
CEPA : Canadian Environmental Protection Act
CEPA 1999 : Canadian Environmental Protection Act, 1999
CFC : chlorofluorocarbon
CHO : Chinese hamster ovary
CI : confidence interval
CTV : Critical Toxicity Value
CYP : cytochrome P450
DBP : disinfection by-product
EC50 : median effective concentration
EEM : Environmental Effects Monitoring
EEV : Estimated Exposure Value
ENEV : Estimated No-Effects Value
EPA : Environmental Protection Agency (United States)
ETS : environmental tobacco smoke
FDA : Food and Drug Administration (United States)
FEP : fluorinated ethylene-propylene
GWP : Global Warming Potential
HCFC : hydrochlorofluorocarbon
ILSI : International Life Sciences Institute
IPCS : International Programme on Chemical Safety
Koc : organic carbon/water partition coefficient
Kow : octanol/water partition coefficient
kg-bw : kilogram body weight
LC50 : median lethal concentration
LD50 : median lethal dose
LOAEL : Lowest-Observed-Adverse-Effect Level
LOEL : Lowest-Observed-Effect Level
NAPS : National Air Pollution Surveillance
NCI : National Cancer Institute (United States)
NOEC : No-Observed-Effect Concentration
ODP : Ozone Depletion Potential
PBPK : physiologically based pharmacokinetic
PCE : polychromatic erythrocyte
POCP : Photochemical Ozone Creation Potential
PSL : Priority Substances List
PTFE : polytetrafluoroethylene
RTECS : Registry of Toxic Effects of Chemical Substances
RWC : reasonable worst case
SCE : sister chromatid exchange
TC05 : Tumorigenic Concentration05; concentration causing a 5% increase in tumour incidence over background
THM : trihalomethane
UDS : unscheduled DNA synthesis
VOC : volatile organic compound