Tetraethyl pyrophosphate

Tetraethyl pyrophosphate
Names
	Preferred IUPAC name Tetraethyl diphosphate
Identifiers
CAS Number	107-49-3 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:82149;
ChEMBL	ChEMBL293787 ;
ChemSpider	7585 ;
ECHA InfoCard	100.003.179
EC Number	203-495-3;
KEGG	C19017;
PubChem CID	7873;
RTECS number	UX6825000;
UNII	28QKT80KX2 ;
UN number	3018 2783
CompTox Dashboard (EPA)	DTXSID3034957 ;
	InChI InChI=1S/C8H20O7P2/c1-5-11-16(9,12-6-2)15-17(10,13-7-3)14-8-4/h5-8H2,1-4H3 Key: IDCBOTIENDVCBQ-UHFFFAOYSA-N ; InChI=1/C8H20O7P2/c1-5-11-16(9,12-6-2)15-17(10,13-7-3)14-8-4/h5-8H2,1-4H3 Key: IDCBOTIENDVCBQ-UHFFFAOYAI;
	SMILES O=P(OP(=O)(OCC)OCC)(OCC)OCC;
Properties
Chemical formula	C8H20O7P2
Molar mass	290.189 g·mol−1
Appearance	colorless to amber liquid
Odor	faint, fruity
Density	1.19 g/mL (20°C)
Melting point	0 °C; 32 °F; 273 K
Boiling point	decomposes
Solubility in water	miscible
Vapor pressure	0.0002 mmHg (20°C)
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H310, H400
Precautionary statements	P262, P264, P270, P273, P280, P301+P310, P302+P350, P310, P321, P322, P330, P361, P363, P391, P405, P501
NFPA 704 (fire diamond)	4 1 1
	Lethal dose or concentration (LD, LC):
LDLo (lowest published)	0.5 mg/kg (rat, oral); 2.3 mg/kg (guinea pig, oral); 3 mg/kg (mouse, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 0.05 mg/m3 [skin]
REL (Recommended)	TWA 0.05 mg/m3 [skin]
IDLH (Immediate danger)	5 mg/m3
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tetraethyl pyrophosphate, abbreviated TEPP, is an organophosphate compound with the formula [(C₂H₅O)₂P(O)]₂O. It is the tetraethyl derivative of pyrophosphate (P₂O₇^4-). It is a colorless oil that solidifies near room temperature. It is used as an insecticide. The compound hydrolyzes rapidly.