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Basic information
- CAS
757-58-4- Standard SMILES
CCOP(=O)(OCC)OP(=O)(OCC)OP(=O)(OCC)OP(=O)(OCC)OCC- InChIKey
DAJYZXUXDOSMCG-UHFFFAOYSA-N- Molecular formula
- C12H30O13P4
- Average molar mass
- 506.255 g/mol
- Monoisotopic mass
- 506.06368754
Names & identifiers
- Preferred name
- Pentaethyl ethyltetraphosphate
- IUPAC
- Pentaethyl ethyltetraphosphate
- English name
- Hexaethyl tetraphosphate
- Molecular formula
- C12H30O13P4
- Molecular weight
- 506.25
Names & synonyms
HTPHETEthyl tetraphosphateRCRA waste number P-062Hexaethyl tetraphosphateDAJYZXUXDOSMCG-UHFFFAOYSA-NTetraphosphoricacid,hexaethylesterTetraphosphoric acid, hexaethyl ester (8CI,9CI)diethoxyphosphoryl [diethoxyphosphoryloxy(ethoxy)phosphoryl] ethyl phosphatephosphoric acid diethoxyphosphoryl [diethoxyphosphoryloxy(ethoxy)phosphoryl] ethyl ester
Database identifiers
- CAS
757-58-4- PubChem CID
- 12960
- DTXSID
DTXSID80862401- UNII
- YL9WI50HOG
- EC Number
- 212-057-0
- Nikkaji
- J86.072G
Properties
Physicochemical properties
- Melting point
- -40 °C · -40°C
- Boiling point
- 150 °C · 150°C (rough estimate)
- Density
- 1.292 · 1.292
- refractive index
- 1.4273 · 1.4273
- form
- liquid
- Henry's Law Constant
- 3 · 3.0×1011 mol/(m3Pa) at 25℃, HSDB (2015)
- FDA UNII
- 9 WI50HOG · YL9WI50HOG
- EPA Substance Registry System
- Hexaethyl tetraphosphate (757-58-4)
- RIDADR
- 1611 · UN 1611
- HazardClass
- 6.1 · 6.1
- PackingGroup
- II
- Hazardous Substances Data
- 757 · 757-58-4(Hazardous Substances Data)
- Toxicity
- 50 oral · LD50 oral in rabbit: 21mg/kg
Safety & regulation
Safety data
- ridadr
- UN 1611
- Toxicity
- LD50 oral in rabbit: 21mg/kg
- hazard_class
- 6.1
- packing_group
- II
- Hazardous Substances Data
- 757-58-4(Hazardous Substances Data)
Chemistry & industry
Applications
UsesHexaethyl tetraphosphate is used as an insecticide, in particular, the insecticide Bladan. The Germans commonly used this chemical as an insecticide during World War II, when nicotine-based insecticides were not available.
General DescriptionTetraethyl pyrophosphate solid is a solid material on which the phosphate itself is absorbed. The phosphate itself is combustible though Hexaethyl tetraphosphate may take effort to ignite. Hexaethyl tetraphosphate is soluble in water and gradually decomposed by it. Hexaethyl tetraphosphate is toxic by inhalation(dust, etc) and by skin absorption.
Preparation methods
PreparationHexaethyl tetraphosphate was first synthesised by the German chemist Gerhard Schrader, who reacted phosphorus oxychloride and triethyl orthophosphate at approximately 150 °C. This reaction is known as the Schrader process. The Germans also made hexaethyl tetraphosphate by phosphorus oxychloride and ethyl alcohol. This reaction requires slightly lower pressure than the Schrader process. The reaction has a chemical equation of POCl3 + 3(C2H5)3PO4 → (C2H5)6P4O13 + 3C2H5Cl.
Additional notes
DefinitionA mixture of ethyl phosphates and ethyl pyrophosphates (TEPP).
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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