AAPCC

American Association of Poison Control Centers

ACGIH

American Conference of Governmental Industrial Hygienist

ACOEM

American College of Occupational and Environmental Medicine

ADI

acceptable daily intake.

AEGL

acute exposure guidelines levels

AFL-CIO

American Federation of Labor-Congress of Industrial Organizations

AIHA

American Industrial Hygienist Association

ATSDR

Agency for Toxic Substances and Disease Registry (U.S.)

BMC

benchmark concentration

BMC₀₅

benchmark concentration, 5% response

BMC₁₀

benchmark concentration, 10% response

CAAA

Clean Air Act Amendments (U.S. EPA)

CAER

Community Awareness and Emergency Response

CMA

Chemical Manufacturers Association, now known as the American Chemistry Council

CAS

Chemical Abstract Service (U.S.)

CDC

Centers for Disease Control and Prevention (U.S. DHHS)

CEEL

community emergency exposure levels (U.S. NRC)

CEL

continuous exposure limits (U.S. NRC)

COT

Committee on Toxicology (U.S. NRC)

C×t

concentration×time

CURE

Chemical Unit Record Estimate database

DFO

designated federal officer

DOD

Department of Defense (U.S.)

DOE

Department of Energy (U.S.)

DOT

Department of Transportation (U.S.)

DTIC

Defense Technical Information Center (U.S.)

ECETOC

European Chemical Industry Ecology and Toxicology Centre

EEGL

emergency exposure guidance levels (U.S. NRC)

EEL

emergency exposure limits (U.S. NRC)

einsatz-toleranzwert

[action tolerance levels] (Federation for the Advancement of German Fire Prevention)

EPA

Environmental Protection Agency (U.S.)

ERP

emergency response planning (AIHA)

ERPG

emergency response and planning guidelines (AIHA)

FACA

Federal Advisory Committee Act (U.S.)

FDA

Food and Drug Administration (U.S.)

FEDRIP

Federal Research in Progress (U.S.)

FEMA

Federal Emergency Management Agency (U.S.)

FEV₁

forced expiratory volume

GLP

Good Laboratory Practices

GSA

General Services Administration (U.S.)

HEAST

Health Effects Assessment Tables

HSDB

Hazardous Substances Data Base

HUD

Department of Housing and Urban Development (U.S.)

IARC

International Agency for Research on Cancer

IDLH

immediately dangerous to life and health (U.S. NIOSH)

IPCS

International Programme for Chemical Safety

IRIS

Integrated Risk Information System (U.S. EPA)

LC₀₁

lethal concentration, 1% lethality

LC₅₀

lethal concentration, 50% lethality

LCL

lower confidence limit

LOAEL

lowest-observed-adverse-effect level

MAC

minimum alveolar concentration

MAC

maximum acceptable concentration (The Netherlands)

MAK

maximale arbeitsplatzkonzentration [maximum workplace concentration] 8-h time-weighted average (German Research Association)

MAK. S

spitzenbegrenzung (kategorie ii, 2) [MAK peak limit (category II, 2)] 30 min×2 per day (Germany)

MCS

multiple chemical sensitivity

MF

modifying factor

MLE

maximum likelihood estimate

MLE₀₁

maximum likelihood estimate, 1% response

MTD

maximum tolerated dose

N/A

not applicable

NAAQS

National Ambient Air Quality Standards (U.S.)

NAC

National Advisory Committee

NAC/AEGL

National Advisory Committee for Acute Exposure Guideline Levels for Hazardous Substances (NAC/AEGL Committee)

NAS

National Academy of Sciences (U.S.)

NASA

National Aeronautical and Space Administration (U.S.)

NCI

National Cancer Institute (U.S.)

NIOSH

National Institute for Occupational Safety and Health (U.S.)

NOAEL

no-observed-adverse-effect level

NRC

National Research Council (U.S.)

NRC/AEGL

National Research Council Subcommittee on Acute Exposure Guideline Levels (NRC/AEGL Subcommittee) (U.S.)

NSF

National Science Foundation (U.S.)

NTIS

National Technical Information Service (U.S.)

NTP

National Toxicology Program (U.S.)

OECD

Organization for Economic Cooperation and Development

ORNL

Oak Ridge National Laboratories (U.S.)

OSHA

Occupational Safety and Health Administration (U.S.)

OSWER

Office of Solid Waste and Emergency Response (U.S.)

PEL-TWA

permissible exposure limit-time-weighted average (U.S. OSHA)

PEL-STEL

permissible exposure limit-short-term exposure limit (U.S. OSHA)

QA

quality assurance

QC

quality control

QSARs

quantitative structure activity relationships

REL-STEL

recommended exposure limit-short-term exposure limit (U.S. NIOSH)

REL-TWA

recommended exposure limits-time-weighted average (U.S. NIOSH)

RfC

reference concentration (U.S. EPA)

RfD

reference dose (U.S. EPA)

RTECS

Registry of Toxic Effects of Chemical Substances

SARA

Superfund Amendments and Reauthorization Act (CERCLA)

SMAC

spacecraft maximum allowable concentrations

SOP

standing operating procedures

SPEGL

short-term public emergency guidance levels (U.S. NRC)

STPL

short-term public limit (U.S. NRC)

TARA

Toxicology and Risk Assessment Document List (U.S. ORNL)

TLV-STEL

Threshold Limit Value-short-term exposure limit (ACGIH)

TLV-TWA Threshold Limit Value-time-weighted average (ACGIH)

TSD

technical support document

UF

uncertainty factor

WEEL

workplace environmental exposure level (AIHA)