Agent Name |
TEPP |
Alternative Name |
Tetraethylpyrophosphate |
CAS Number |
107-49-3 |
Formula |
C8-H20-O7-P2 |
Major Category |
Pesticides |
Synonyms |
Bis-O,O-diethylphosphoric anhydride; Bladan; Bladan (VAN); Diphosphoric acid tetraethyl ester; EA 1285; Ethyl pyrophosphate; Ethyl pyrophosphate (Et4P2O7); Ethyl pyrophosphate, tetra-; Fosvex; Grisol; HEPT; Hepthexamite; Hexamite; Killax; Killex; Kilmite 40; Lethalaire G-52; Lirohex; Mortopal; Nifos; Nifos T; Nifost; O,O,O,O-Tetraaethyl-diphosphat, bis(O,O-diaethylphosphorsaeure-anhydrid) [German]; O,O,O,O-Tetraethyl-difosfaat [Dutch]; O,O,O,O-Tetraetil-pirofosfato [Italian]; Pyrophosphate de tetraethyle [French]; TEPP; Tetraaethylpyrophosphorsaeureester [German]; Tetraethyl diphosphate; Tetraethyl pyrofosfaat [Belgian]; Tetraethyl pyrofosfaat [Dutch]; Tetraethyl pyrophosphate; Tetraethyldifosfat [Czech]; Tetraethylpyrofosfat [Czech]; Tetraethylpyrophosphate; Tetraethylpyrophosphorsaeureester [German]; Tetrastigmine; Tetron; Tetron-100; Vapotone; [ChemIDplus] |
Category |
Organophosphates |
Description |
Colorless to amber liquid with a faint, fruity odor. [insecticide] [Note: A solid below 32 degrees F.]; [NIOSH] |
Sources/Uses |
Commercially available as dust, concentrate, or solution in methyl chloride to kill aphids, spiders, mites, mealy bugs, leafhoppers, and thirps; [ACGIH] Used on vegetable and fruit crops, it is one of the first organophosphate insecticide developed and has been largely replaced by newer products. [HSDB] |
Comments |
Many deaths have been reported, most after suicidal ingestion. Several cases of severe poisoning and death have been reported after spills in which workers clothing was contaminated. [ACGIH] |
Exposure Assessment |
BEI |
Cholinesterase activity in red cells = 70% of individual's baseline, sample time discretionary; [ACGIH] |
Skin Designation (ACGIH) |
Yes |
TLV (ACGIH) |
0.01 mg/m3, inhalable fraction and vapor |
PEL (OSHA) |
0.05 mg/m3 |
MAK |
0.06 mg/m3 |
IDLH (NIOSH) |
5 mg/m3 |
Vapor Pressure |
0.00015 mm Hg |
Lethal Concentration |
LC50 (rats) = 7 mg/m3/4H; [ACGIH] |
Adverse Effects |
Other Poison |
Organophosphate |
Links to Other NLM Databases |
Health Studies |
Human Health Effects from Hazardous Substances Data Bank: TETRAETHYL PYROPHOSPHATE
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