The table below gives the main abbreviations which will be found
in the toxicity data for chemicals listed on
these (and many other)
web pages.
[Return to
Physical & Theoretical Chemistry Lab. Safety home page.]
asn
Aspergillus nidulans
ast
Ascites tumor
bcs
Bacillus subtilis
bfa
body fluid assay
bmr
bone marrow
brd
bird (domestic or lab)
bwd
wild bird species
chd
child
ckn
chicken
CL
ceiling concentration
clr
Chlamydomonas reinhardi
ctl
cattle
cyt
cytogenetic analysis
D
day
dck
duck
dlt
cominant lethal test
dmg
Drosophila melanogaster
dnd
DNA damage
dni
DNA inhibition
dnr
nNA repair
dns
unscheduled DNA synthesis
dom
domestic animal (goat, sheep)
dpo
Drcsophila pseudo-obscura
emb
embryo
esc
Escherichia cold
eug
Euglena gracilis
eye
administration into eye (irritant)
fb
fiber
fbr
fibroblast
frg
frog
gm
gram
gpg
guinea pig
grb
gerbil
grh
grasshopper
H
hour
ham
hamster
hla
HeIa cell
hma
host-mediated assay
hmi
Haemophilus influenzae
hmn
human
hor
horse, donkey
I
intermittent
ial
intraaural
IARC
International Agency for Research on Cancer
iat
intraarterial
ice
intracerebral
icv
intracervical
idr
intradermal
idu
intraduodenal
ihl
inhalation
imm
immersion
imp
implant
ims
intramuscular
inf
infant
ipc
intraplacental
ipl
intrapleural
ipr
intraperitoneal
irn
intrarenal
isp
intraspinal
itr
intratracheal
itt
intratesticular
iu
international unit
iut
intrauterine
ivg
intravaginal
ivn
intravenous
kdy
kidney
kg
kilogram
klp
Klebsiella pneumoniae
L
liter
LC50
lethal concentration 50 percent kill
LCLo
lowest published lethal concentration
LD50
lethal dose 50 percent kill
LDlo
lowest published lethal dose
leu
leukocyte
Liq
liquid
lng
lung
lvr
liver
lym
lymphocyte
M
minute
m3
cubic meter
mam
mammal (species unspecified)
man
man
ug
microgram
umol
micromole
mg
milligram
mky
monkey
mL
milliliter
MLD
mild irritation effects
mma
microsomal mutagenicity assay
mmo
mutation in microorganisms
mmol
millimole
mmr
mammary gland
mnt
micronucleus test
MOD
moderate irritation effects
mol
mole
mppcf
million particles per cubic foot
mrc
gene conversion and mitotic recombination
msc
mutation in mammalian somatic cells
mul
multiple routes
mus
mouse
n/a
not available
ng
nanogram
nml
non-mammalian species
nmol
nanomole
NOAEL
No Observed Adverse Effect Level
nsc
Neurospora crassa
ocu
ocular
ofs
other fish
omi
other microorganisms
oms
other mutation test systems
oin
other insects
open
open irritation test
orl
oral
ORM
Other Regulated Material (DoT)
oth
other cell types
otr
oncogenic transformation
ovr
ovary
par
parenteral
pg
picogram
pgn
pigeon
pic
phage inhibition capacity
pig
pig
Pk
peak concentration
pmol
picomole
post
after birth
ppb
parts per billion (v/v)
pph
parts per hundred (v/v) (percent)
ppm
parts per million (v/v)
ppt
parts per trillion (v/v)
preg
pregnant
qal
quail
rat
rat
rbt
rabbit
rec
rectal
rns
rinsed with water
S
second
sal
salmon
sat
Salmonella typhimurium
sce
sister chromatic exchange
scu
subcutaneous
SEV
severe irritation effects
skn
administration onto skin
sln
sex chromosome loss and nondisjunction
slt
specific locus test
slw
silkworm
smc
Saccharomyces cerevisiae
spm
sperm morphology
spr
sperm
sql
squirrel
srm
Serratia marcescens
ssp
Schizosaccharomyces pombe
STEL
short term exposure limit
TC
toxic concentration (other than lowest concentration)
TCLo
lowest published toxic concentration
TD
toxic dose (other than lowest toxic dose)
TDLo
lowest published toxic dose
tes
testis
TLV
Threshold Limit Value
tod
toad
trk
turkey
trn
heritable translocation test
TWA
time weighted average
unr
unreported
W
week
wmn
woman
Y
year
Last update February 17, 2006