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Ethoprophos

Ethoprophos structure

Ethoprophos 

structure
  • CAS No:

    13194-48-4

  • Formula:

    C8H19O2PS2

  • Chemical Name:

    Ethoprophos

  • Synonyms:

    Phosphorodithioic acid,O-ethyl S,S-dipropyl ester;Ethyl propyl phosphorodithioate ((EtO)(PrS)2PO);O-Ethyl S,S-dipropyl phosphorodithioate;Mocap;VC 9-104;S,S-Dipropyl O-ethyl phosphorodithioate;Prophos (ester);Mocap 10G;Ethoprop;Ethoprophos;Rovokil;O-Ethyl S,S-dipropyl dithiophosphate;Profos;Prophos;ENT 27318;Mocap 6EC;Mobile;Mocap 15G;1-(Ethoxy-propylsulfanylphosphoryl)sulfanylpropane

  • Categories:

    Agrochemicals  >  Insecticides

Description

Clear Colorless Oil Ethoprophos is a pale yellow liquid.Ethorop is one of a family of organophosphorus pesticides. Mocap is combustible though Mocap may require some effort to ignite. Mocap is very toxic by skin absorption and inhalation. Mocap may or may not be water soluble.

Ethoprophos Basic Attributes

242.34

242.34

236-152-1

29309090

Characteristics

76.9

3.6

Ethorop is one of a family of organophosphorus pesticides. It is combustible though it may require some effort to ignite. It is very toxic by skin absorption and inhalation. It may or may not be water soluble.

1.094 g/cm3 @ Temp: 20 °C

-13 °C

86-91 °C @ Press: 0.2 Torr

100 °C

1.494

Solubility in water, g/100ml at 20°C: 0.075

APPROX 4°C

Vapour pressure, Pa at 20-25°C: 0.05

Relative vapour density (air = 1): 8.4

Oral-rat LD50: 34 mg/kg

Open flame is flammable; heat decomposes toxic phosphorus oxide and sulfur oxide gas

Safety Information

II

6.1(a)

UN 2810

3

25-26/27-43-50/53

27-28-36/37/39-45-60-61-27/28

TE4025000

T+;N,N,T+

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Thermally stable for 8 hr at 150 deg C.

P260-P264-P273-P280-P284-P301 + P310

H300 + H310 + H330-H317-H410

Toxicity

most toxic

Ethoprophos Use and Manufacturing

Methods of Manufacturing

Preparation Method 1 Preparation of O, O-diethyl-S-propylthiodithiophosphoric acid ester Mix 15 g (0.1 mol) of potassium carbonate anhydrous and 100 mL of acetone, and add 18.6 g (0.1 mol) O dropwise with stirring , O-diethyldithiophosphoric acid, properly cooled, stirred for 10 minutes after the drop, added 12.3g (0.1mol) n-bromopropane, and reacted under reflux for 2h. After cooling, filtering, and dissolving, the residue was extracted with ether, dried over anhydrous sodium sulfate, and distilled under reduced pressure to obtain 20.1g (99~100℃/240Pa) of the product. The yield was 88%. Preparation of O-ethyl-S-propyl potassium dithiophosphate 50 mL of absolute ethanol, 6 g (0.105 mol) of potassium hydroxide, under stirring, pass thiohydrogen gas to saturation to obtain potassium hydrosulfide ethanol solution, here Add 22.8g (0.1mol) of the previous product to the solution and prepare it by refluxing for 5h. For the synthesis of methamidophos, add 12.9g (0.105mol) of n-bromopropane to the ethanol solution in the two-step reaction, react under reflux for 5.5h, cool, filter, and desolve to obtain 25.2g of turbid liquid, bp104~108℃/13~133Pa, The purity is 96.05% and the yield is 80%. Preparation method Phosphorus oxychloride reacts with absolute ethanol to form O-ethylphosphoryl dichloride, and then reacts with propyl mercaptan in the presence of sodium hydroxide to prepare mefenphox.

Uses

Insecticide; nematocide.

Computed Properties

Molecular Weight:242.3
XLogP3:3.6
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:8
Exact Mass:242.05640919
Monoisotopic Mass:242.05640919
Topological Polar Surface Area:76.9
Heavy Atom Count:13
Complexity:152
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes

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