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Insecticides and acaricides

Schradan

Also known as Octamethyl, Sytam, Pestox III

CAS 152-16-9Formula C8H24N4O3P2Molar mass 286.25 g/molEC 205-801-0
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Schradan chemical structure, C8H24N4O3P2, CAS 152-16-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Viscous liquid
Melting point
17 °C
Boiling point
120 to 125
Density
1.1343 @ 25 °C
Solubility
SOL IN KETONES, NITRILES, ESTERS, ALCOHOLS, AROMATIC HYDROCARBONS, MISCIBLE WITH WATER,…
HS code
294200
Category
Insecticides and acaricides
UN number
UN 3018
Illustrative photo, a closed 1000 litre IBC tote in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Schradan?

Plain description, key identifiers and synonyms

Schradan is a phosphorodiamide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-[bis(dimethylamino)phosphoryloxy-(dimethylamino)phosphoryl]-N-methylmethanamine
CAS number
152-16-9 CAS number cross-checked
EC number
205-801-0
Molecular formula
C8H24N4O3P2
UNII
D77OYM46S1
InChIKey
SZKKRCSOSQAJDE-UHFFFAOYSA-N
InChI
InChI=1S/C8H24N4O3P2/c1-9(2)16(13,10(3)4)15-17(14,11(5)6)12(7)8/h1-8H3
SMILES (canonical and isomeric)
CN(C)P(=O)(N(C)C)OP(=O)(N(C)C)N(C)C

Synonyms

  • Octamethyl
  • Sytam
  • Pestox III
  • Octamethylpyrophosphoramide
  • Ompacide
  • Systophos
  • Ompatox
  • Pestox
  • Systam
  • Ompax
  • OMPA
  • Pestox 3
  • Schradane
  • Lethalaire G-59
  • Octamethyldiphosphoramide
  • Octamidophos
  • Octamethyl pyrophosphortetramide
  • Diphosphoramide, octamethyl-
  • Pyrophosphoramide, octamethyl-
  • Ottometil-pirofosforammide
  • Pestox 66
  • Oktamidofos
  • Oktamethyl
  • Octamethyl tetramido pyrophosphate
  • Pyrophosphoryltetrakisdimethylamide
Show all 38 synonyms
  • Octamethylpyrophosphoric acid amide
  • Bis(dimethylamino)phosphoric anhydride
  • Octamethylpyrophosphoric acid tetramide
  • Bis(dimethylamino)phosphonous anhydride
  • Octamethyl-difosforzuur-tetramide
  • Rcra waste number P085
  • Octamethyl pyrophosphoramide
  • Tetrakisdimethylaminophosphonous anhydride
  • Octamethyl-diphosphorsaeure-tetramid
  • Pestox-3
  • ENT 17,291
  • Bis(bisdimethylaminophosphonous)anhydride
  • Diphosphoramide, N,N,N',N',N'',N'',N''',N'''-octamethyl-

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
Viscous liquidexp.
Melting point
17 °Cexp.
Boiling point
120 to 125exp.
Density
1.1343 @ 25 °Cexp.
Solubility
SOL IN KETONES, NITRILES, ESTERS, ALCOHOLS, AROMATIC HYDROCARBONS, MISCIBLE WITH WATER, PRACTICALLY INSOL IN HIGHER ALIPHATIC HYDROCARBONSexp.
Vapour pressure
1 × 10⁻³ MM HG @ 25 °Cexp.

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
286.25 g/molcalc.
Exact mass
286.1324 Dacalc.
LogP (octanol/water)
1.47calc.
Topological polar surface area
56.33 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
6calc.
Heavy atoms
17calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H300Fatal if swallowed.
  • H310Fatal in contact with skin.
Precautionary statements (12)
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3018

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

Schradan suppliers

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Schradan 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

Acaricide, systemic insecticide.

Schradan is ... Selective systemic insecticide: it will kill sucking insects, eg aphids, but not bees or other ... Insects.

Used as a soil drench for transplanted trees.

It possesses only a weak contact action to most insects, although it is fairly toxic to hemiptera and homoptera. ... When absorbed into plants, schradan provides long-term protection from aphids and mites.

How it is made

By reaction of tetramethylphosphorodiamidic chloride with ethyl tetramethylphosphorodiamidate, by reaction of tetramethylphosphorodiamidic chloride in pyridine or n-methyldibutylamine, by heating tetramethylphosphorodiamidic chloride with alkali metal hydroxide.

Us patent 2,610,139. (Crude product pestox 3)

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 015-026-00-8

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2942.00Indicative HS code

Organic compounds not elsewhere classified in chapter 29

World exports in 2024
$589M
−43.5% vs 2023, imports $614M
2019 to 2024
Top exporters
  1. India * partner reported20.7%
  2. United States18.6%
  3. Italy10.4%
Top importers
  1. United States15.1%
  2. Italy6.7%
  3. Japan5.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Schradan is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Schradan?

Schradan is a phosphorodiamide.

What is the CAS number of Schradan?

The CAS registry number of Schradan is 152-16-9.

What is the molecular formula and weight of Schradan?

The molecular formula of Schradan is C8H24N4O3P2 and its molar mass is 286.25 g/mol.

What is Schradan used for?

Acaricide, systemic insecticide. Schradan is ... Selective systemic insecticide: it will kill sucking insects, eg aphids, but not bees or other ... Insects. Used as a soil drench for transplanted trees. It possesses only a weak contact action to most insects, although it is fairly toxic to hemiptera and homoptera. ...

Is Schradan hazardous?

Schradan carries the GHS signal word "Danger". Main hazards: fatal if swallowed, fatal in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Schradan?

Schradan is usually classified under HS code 294200 (XIII. OTHER ORGANIC COMPOUNDS, other organic compounds). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Schradan?

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What is the price of Schradan?

Suppliers quote Schradan 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 Schradan

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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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