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monocrotophos (Ref: ENT 27129)
** azadrin ** corophos ** OMS 834 ** Translations

Environmental Fate - Ecotoxicology - Human Health - A to Z Index - Home

GENERAL INFORMATION
for monocrotophos

Description: Used to control sucking, chewing pests and common mites, ticks and spiders typically on cotton, citrus, olives and many other crops

Introduction: -

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Italy
Date inclusion expires Expired

Approved for use () or known to be used () in the following European countries:

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

General status:
Pesticide type Insecticide, Acaricide
Substance group Organophosphate
Substance origin Synthetic
Mode of action Broad spectrum, systemic with stomach and contact action. Acetylcholinesterase (AChE) inhibitor.
CAS RN 6923-22-4
EC number 230-042-7
CIPAC number 287
US EPA chemical code 058903
Chiral molecule No
Chemical formula C7H14NO5P
SMILES O=P(O/C(=C/C(=O)NC)C)(OC)OC
International Chemical Identifier (InChI) InChI=1/C7H14NO5P/c1-6(5-7(9)8-2)13-14(10,11-3)12-4/h5H,1-4H3,(H,8,9)/b6-5+
Structure diagram/image available? Yes
Molecular mass (g mol-1) 223.16
PIN (Preferred Identification Name) -
IUPAC name dimethyl (E)-1-methyl-2-(methylcarbamoyl)vinyl phosphate
CAS name dimethyl (1E)-1-methyl-3-(methylamino)-3-oxo-1-propenyl phosphate
Other status information PIC Annex III; Marine Pollutant; Rotterdam Convention (Class Ib)
Herbicide Resistance Classification (HRAC) Not applicable
Insecticide Resistance Classification (IRAC) 1B
Fungicide Resistance Classification (FRAC) Not applicable
Physical state Colourless crystals when pure reddish-brown as technical substance
Related substances & organisms

Formulations:
Property Value
Example manufacturers of products using this active
  • BASF
  • AgroCare
  • King Tech Corp
  • United Phosphorus
Example products using this active
  • Nuvacron
  • Crisodrin
  • Monophos
  • Monodrin
  • Phoskill
UK LERAP status No UK approval for use or outside scope
Formulation and application details Available as a water soluble concentrate and ULV formulation.


ENVIRONMENTAL FATE

for monocrotophos

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 818000 E3 High
Solubility - In organic solvents at 20oC (mg l-1) 700000 Q2 - Acetone -
1000000 Q2 - Methanol -
10000 E3 - Toluene -
292000 E3 - Ethanol -
Melting point (oC) 54 G3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 6.03 X 10-01 Calculated -
Log P -0.22 G3 Low
Bulk density (g ml-1)/Specific gravity 1.16 Q2 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 25oC (mPa) 0.29 G3 Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1) - - -
Henry's law constant at 20oC (dimensionless) 3.25 X 10-11 Calculated Non-volatile
GUS leaching potential index 2.30 Calculated Transition state
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value 1.55 X 10-02 Calculated -
Note -
Potential for particle bound transport index - Calculated Low
Maximum UV-vis absorption L mol-1 cm-1 - - -
Surface tension (mN m-1) - - -

Degradation:
Property Value Source/Quality Score/Other Information Interpretation
Soil degradation (days) (aerobic) DT50 (typical) 7 G3 Non-persistent
DT50 (lab at 20oC) - - -
DT50 (field) 30 F3 Moderately persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note Literature values for soil DT50 range 1-35 days
Aqueous photolysis DT50 (days) at pH 7 Value 26 P3 Slow
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 134 P3 Persistent
Note -
Water-Sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Value Source/Quality Score/Other Information Interpretation
Linear Kd - P3 Mobile
Koc 19
Notes and range Literature values for Koc range 0.9-30.8 mL/g
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for monocrotophos

Property Value Source/Quality Score/Other Information Interpretation
Bio-concentration factor BCF Low risk Q3 Based on LogP < 3 High potential
CT50 (days) - -
Bioaccumulation potential - Calculated Low
Mammals - Acute oral LD50 (mg kg-1) 14 F4 Rat High
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 0.94 G3 Colinus virginianus High
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 7.0 G3 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.023 F3 Daphnia magna High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, static, water (mg l-1) - - -
Sediment dwelling organisms - Chronic 28 day NOEC, sediment (mg kg-1) - - -
Aquatic plants - Acute 7 day EC50, biomass (mg l-1) - - -
Algae - Acute 72 hour EC50, growth (mg l-1) - - -
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees - Acute 48 hour LD50 (μg bee-1) 0.02 R4 Oral High
Earthworms - Acute 14 day LC50 (mg kg-1) 35 R4 Moderate
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) - - -
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect - - -
Other arthropod (2) LR50 g ha-1 - - -
% Effect - - -
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for monocrotophos

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) 14 F4 Rat High
Mammals - Dermal LD50 (mg kg-1 body weight) > 157 J4 Rat -
Mammals - Inhalation LC50 (mg l-1) - - -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.0006 JMPR 1995 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.02 JMPR 1995 -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List I; List II - -
Exposure Limits [TLV: 0.25 mg/m3], [PEL: 0.25 mg/m3] G3 -
Exposure Routes Public Minimal risk from food residues
Exposure by general public unlikely
Occupational Full protective clothing required including respirator to minimise operator and worker exposure
May be absorbed through skin
Examples of European MRLs (mg kg-1) Value -
Note For the EU pesticides database click here
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Acetyl cholinesterase inhibitor Neurotoxicant Respiratory tract irritant Skin irritant Eye irritant

-

General human health issues Highly toxic orally

: Yes, known to cause a problem
: No, known not to cause a problem
: Possibly, status not identified
- : No data

Handling issues:
Property Value Source/Quality Score/Other Information Interpretation
General Corrosive
IMDG Transport Code is 6.1
CLP classification 2013 -
EC Risk Classification T+ : Very toxic: R26/28, R68
T - Toxic: R24
N - Dangerous for the environment: R50, R53
EC Safety Classification S1/2, S36/37, S45, S60, S61
WHO Classification Ib - Highly hazardous
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number 2783
Waste disposal & packaging -


TRANSLATIONS

for monocrotophos

Language Name
English monocrotophos
French monocrotophos
German Monocrotophos
Danish -
Italian -
Spanish monocrotofos
Greek -
Slovenian -
Polish monokrotofos
Swedish -
Hungarian -
Dutch -

Record last updated: Friday 09 August 2013
Contact: aeru@herts.ac.uk