Nineteenth Interim Report of the Committee on Acute Exposure Guideline Levels: Part A (2011)

ACGIH American Conference of Governmental Industrial Hygienists

AEGL acute exposure guideline level

AN acrylonitrile

ATSDR Agency for Toxic Substances and Disease Registry

BCME bis-chloromethyl ether

BEI Biological Exposure Index

BMCL₀₅ benchmark concentration with its lower confidence limit at a 5% extra risk

BZ 3-quinuclidinyl benzilate

CEEL community emergency exposure level

CEO cyanoethylene oxide

CMME chloromethyl methyl ether

DA diphenylchloroarsine

ED ethyldichloroarsine

ED₅₀ the dose of a substance that causes an effect in 50% of the exposed population

EHS extremely hazardous substances

EPA U.S. Environmental Protection Agency

ERPG emergency response planning guidelines

H₂SO₄ sulfuric acid

HBr hydrogen bromide

HCl hydrogen chloride

HFA hexafluoroacetone

ICt₅₀ concentration and time of a substance that causes incapacitation to 50% of an exposed population

IDLH immediately dangerous to life or health

IRIS Integrated Risk Information System

L liter

L-1 lewisite-1

L-2 lewisite-2

L-3 lewisite-3

LC₀₁ lethal concentration to 1% of the exposed population

LC₅₀ concentration of a substance that is lethal to 50% of the exposed population

LCt₅₀ concentration and time of a substance that is lethal to 50% of the exposed population

LOAEL lowest-observed-adverse-effect level

m³ cubic meter

MAC maximum accepted concentration

MAK maximum workplace concentration

MD methyldichloroarsine

Mg milligram

min minute

mmHg millimeters of mercury

NAC National Advisory Committee on Acute Exposure Guideline Levels for Hazardous Substances

NIOSH National Institute for Occupational Safety and Health

NO nitric oxide

NO₂ nitrogen dioxide

N₂O₄ nitrogen tetroxide

NOAEL no-observed-adverse-effect level

NOEL no-observed-effect level

NRC National Research Council

OSHA Occupational Health and Safety Administration

PBPK physiologically based pharmacokinetic

PD phenyldichloroarsine

POD point of departure

ppm part per million

RD₅₀ concentration of a substance that reduces the respiratory rate of test organisms by 50%

REL recommended exposure limit (NIOSH)

SMAC spacecraft maximum allowable concentration

SO₃ sulfur trioxide

SOP standing operating procedures

STEL short-term exposure limit

TMB trimethylbenzene

TLV Threshold Limit Value

TRI Toxics Release Inventory

TSD technical support document

UF uncertainty factor

WEEL workplace environmental exposure limit