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Insecticides and acaricides

Hexaethyltetraphosphate

Also known as Hexaethyl tetraphosphate, Ethyl tetraphosphate, Bladan base

CAS 757-58-4Formula C12H30O13P4Molar mass 506.26 g/molEC 212-057-0
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Hexaethyltetraphosphate chemical structure, C12H30O13P4, CAS 757-58-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow liquid
Melting point
-40 °C
Boiling point
150 °C
Density
1.26 to 1.28 at 25 °C/4 °C
Solubility
Miscible with water and many organic solvents except kerosene
HS code
291990
Category
Insecticides and acaricides
UN number
UN 1611
Illustrative photo, pale yellow liquid in a glass bottle and beaker on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Hexaethyltetraphosphate?

Plain description, key identifiers and synonyms

Hexaethyl tetraphosphate is a yellow liquid which is miscible in water. It is difficult to burn. It is toxic by skin absorption and inhalation. It is a mixture of ethyl phosphates and ethyl pyrophosphate. It decomposes at high temperatures. May be found in the form of a dry mixture where the liquid is absorbed onto a dry carrier.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
diethoxyphosphoryl [diethoxyphosphoryloxy(ethoxy)phosphoryl] ethyl phosphate
CAS number
757-58-4 CAS number cross-checked
EC number
212-057-0
Molecular formula
C12H30O13P4
UNII
YL9WI50HOG
InChIKey
DAJYZXUXDOSMCG-UHFFFAOYSA-N
InChI
InChI=1S/C12H30O13P4/c1-7-17-26(13,18-8-2)23-28(15,21-11-5)25-29(16,22-12-6)24-27(14,19-9-3)20-10-4/h7-12H2,1-6H3
SMILES (canonical and isomeric)
CCOP(=O)(OCC)OP(=O)(OCC)OP(=O)(OCC)OP(=O)(OCC)OCC

Synonyms

  • Hexaethyl tetraphosphate
  • Ethyl tetraphosphate
  • Bladan base
  • Hexaethyltetrafosfat
  • RCRA waste number P062
  • Ethyl tetraphosphate, hexa-
  • Tetraphosphoric acid, hexaethyl ester
  • Tetraphosphate hexaethylique
  • Ethyl tetraphosphate, hexa
  • HETP
  • RCRA waste no. P062
  • Hexaethyl tetraphosphate, solid
  • Hexaethyl tetraphosphate, liquid
  • pentaethyl ethyltetraphosphate
  • diethoxyphosphoryl [diethoxyphosphoryloxy(ethoxy)phosphoryl] ethyl phosphate

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Yellow liquidexp.
Odour
Odorlessexp.
Melting point
-40 °Cexp.
Boiling point
150 °Cexp.
Density
1.26 to 1.28 at 25 °C/4 °Cexp.
Solubility
Miscible with water and many organic solvents except keroseneexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
506.26 g/molcalc.
Exact mass
506.0637 Dacalc.
LogP (octanol/water)
5.69calc.
Topological polar surface area
151.4 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
13calc.
Rotatable bonds
18calc.
Heavy atoms
29calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Fails (3 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS classification
Hazard pictograms
UN number
UN 1611
Transport hazard class
6.1

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Hexaethyltetraphosphate suppliers

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Hexaethyltetraphosphate price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Insecticide.

Contact insecticide.

How it is made

HETP may be prepared by the interaction of (a) triethyl phosphate (3 moles) & phosphorus oxychloride (1 mole): Schrader, G, West German Patent 720,577, (b) of triethyl phosphate (2 moles) & phosphorus pentoxide: Woodstock, WH, US Patent 2,402,703.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Hexaethyl tetraphosphate, Ref no: 316, Annex ref: II/316

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Hexaethyltetraphosphate is traded under.

HS 2919.90Indicative HS code

Phosphoric, and their salts, including lactophosphates, their halogenated, sulphonated, nitrated…

World exports in 2024
$940M
−0.7% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China55.6%
  2. Germany10.6%
  3. Italy6.2%
Top importers
  1. United States15.8%
  2. South Korea10.1%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Hexaethyltetraphosphate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Hexaethyltetraphosphate, based on the data on this page

What is Hexaethyltetraphosphate?

Hexaethyl tetraphosphate is a yellow liquid which is miscible in water. It is difficult to burn. It is toxic by skin absorption and inhalation. It is a mixture of ethyl phosphates and ethyl pyrophosphate. It decomposes at high temperatures.

What is the CAS number of Hexaethyltetraphosphate?

The CAS registry number of Hexaethyltetraphosphate is 757-58-4.

What is the molecular formula and weight of Hexaethyltetraphosphate?

The molecular formula of Hexaethyltetraphosphate is C12H30O13P4 and its molar mass is 506.26 g/mol.

What is Hexaethyltetraphosphate used for?

Insecticide. Contact insecticide.

Is Hexaethyltetraphosphate hazardous?

No GHS hazard classification for Hexaethyltetraphosphate is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Hexaethyltetraphosphate?

Hexaethyltetraphosphate is usually classified under HS code 291990 (Phosphoric esters and their salts, including lactophosphates, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Hexaethyltetraphosphate?

Post a free request on CompoundList and suppliers of Hexaethyltetraphosphate will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Hexaethyltetraphosphate?

Suppliers quote Hexaethyltetraphosphate on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Hexaethyltetraphosphate

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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