Select Option
Home
A to Z
Search
Terms & Conditions
Support Information
Purchasing & Other Services
Video User Guides
GET ADDITIONAL DATA HERE!

mecoprop-P (Ref: BAS 037H)
** CMPP-P ** MCPP-P ** mechlorprop-P ** RP 591066 ** Translations

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

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for mecoprop-P

Description: A herbicide for post-emergence control of broad-leaved weeds on grass

Example pests controlled: Cleavers; Chickweed; Clover; Plantains; Ground ivy; Knotweed; Bluegrasses; Bent grass

Example applications: Lawns; Sports fields; Golf courses; Fairways; Cereals including wheat, barley, oats, triticale

Efficacy & activity: Well established herbicide used across the Europe for broad leaved weed control for many years.

Availability status: Current

Introduction & key dates: 1987, Germany

EC Regulation 1107/2009 (repealing 91/414):
Status Approved
Dossier rapporteur/co-rapporteur UK/Ireland
Date inclusion expires 31/01/2019
EU Candidate for substitution (CfS) No
Listed in EU database Yes

Approved for use () or known to be used () in the following European countries: Click to access a note on the approvals information on this site

AT

BE

BG

CY

CZ

DE

DK

EE

EL

ES

FI

FR

HR

HU

IE

IT

LT

LU

LV

MT

NL

PL

PT

RO

SE

SI

SK

UK

Also used in: Australia

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism Mecoprop-P is the herbicidally active D+ isomer of chiral mecoprop.
Chemical formula C10H11ClO3
Canonical SMILES CC1=C(C=CC(=C1)Cl)OC(C)C(=O)O
Isomeric SMILES CC1=C(C=CC(=C1)Cl)O[C@H](C)C(=O)O
International Chemical Identifier key (InChIKey) WNTGYJSOUMFZEP-SSDOTTSWSA-N
International Chemical Identifier (InChI) InChI=1S/C10H11ClO3/c1-6-5-8(11)3-4-9(6)14-7(2)10(12)13/h3-5,7H,1-2H3,(H,12,13)/t7-/m1/s1
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide
Substance group Aryloxyalkanoic acid
Minimum active substance purity 890 g/kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Selective, systemic, absorbed through leaves and translocated to roots. Synthetic auxin.
CAS RN 16484-77-8
EC number 240-539-0
CIPAC number 475
US EPA chemical code 129046
PubChem CID 185588
Molecular mass (g mol-1) 214.65
PIN (Preferred Identification Name) -
IUPAC name (R)-2-(4-chloro-o-tolyloxy)propionic acid
CAS name (2R)-2-(4-chloro-2-methylphenoxy)propanoic acid
Other status information Potential groundwater contaminant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) O
Herbicide Resistance Classification (WSSA) 4
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White to light brown crystalline solid
Related substances & organisms

Formulations:
Property Click here for information on the general product and branding information used on this site Value
Example manufacturers & suppliers of products using this active now or historically
  • BASF
  • Belchim
  • Certis
  • Headland
  • Nufarm
  • Scotts
Example products using this active
  • Compitox Plus
  • Di-Farmon R
  • Foundation
  • Optica
  • Prompt
  • Relay P
UK LERAP status No approval for use
Formulation and application details Often supplied as soluble concentrate that is mixed with water and used as a spray.


ENVIRONMENTAL FATE

for mecoprop-P

Property Click here for information on the parameters used to describe environmental fate on this site Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with fate data Interpretation Click here for information on the way in which we interpret environmental fate data
Solubility - In water at 20oC (mg l-1) 250000 A5 High
Solubility - In organic solvents at 20oC (mg l-1) 1000000 A5 - Acetone -
1000000 A5 - Ethyl acetate -
1000000 A5 - Methanol -
314000 A5 - p-Xylene -
Melting point (oC) 93.5 A5 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) 240 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 6.46 X 10-01 Calculated -
Log P -0.19 A5 Low
Bulk density (g ml-1)/Specific gravity 1.31 A5 -
Dissociation constant (pKa) at 25oC 3.7 A5 -
Note: Weak acid
Vapour pressure at 20oC (mPa) 0.23 A5 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 5.70 X 10-05 A5 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 1.60 Calculated Low leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Click here for a note on the limitations of the SCI-GROW index Value 4.41 X 10-03 Calculated -
Note -
Potential for particle bound transport index Click here for a note on the limitations of the potential for particle bound transport index - Calculated Low
Maximum UV-vis absorption L mol-1 cm-1 Neutral soln: 229nm=9530, 280nm=1470, 285nm=1290, no absorption above 400nm; [Acid soln: 227nm=8860, 279nm=1340, 284 nm=1770, no absorption above 400nm; [Alkaline soln: 229nm=9520, 280nm=1560, 289nm=1360, no absorption above 400nm A5 -
Surface tension (mN m-1) 50 A5 at 20 degC, 99.8% -

Degradation:
Property Click here for information on the parameters used to describe substance degradation Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with degradation data Interpretation Click here for information on the way in which we interpret substance degradation data
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 5.24 A5 Non-persistent
DT50 (lab at 20oC) 5.24 A5 Non-persistent
DT50 (field) 21 H4 Non-persistent
DT90 (lab at 20oC) 26 A5 -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 4.0-8.2 days, DT90 range 23.1-33.6 days, Soils=3; Other field studies: DT50 5-17 days
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value 44 A4 Stable
Note pH sensitive: DT50 42 days at pH 5, 44 days at pH 7, 32 days at pH 9 (for mecoprop)
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable A4 -
Note Stable pH 5 to pH 9 at 25 & 70 degC
Water-sediment DT50 (days) 141 A5 Slow
Water phase only DT50 (days) 92 A5 Stable

Soil adsorption and mobility:
Property Click here for information on the parameters used to describe substance adsorption and mobility Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with adsorption and mobility data Interpretation Click here for information on the way in which we interpret substance adsorption and mobility
Linear Kd - - -
Koc -
Notes and range -
Freundlich Kf 1.54 A5 Mobile
Kfoc 59.8
1/n 0.85
Notes and range EU 2016 RAR dossier Kf range 0.3-4.5 mL/g, Kfoc range 12-167 mL/g, 1/n range 0.66-1.01, Soils=10
pH sensitivity Adsorption higher at lower pH

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
hydroxymethyl-mecoprop-P HMCPP Plant; Rat - -
carboxymecoprop-P CCPP Plant; Rat - -
o-cresol 2-methylphenol Water (photolysis) - -


ECOTOXICOLOGY

for mecoprop-P

Property Click here for information on the parameters used to describe substance ecotoxicology Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with ecotoxicology data Interpretation Click here for information on the way in which we interpret substance ecotoxicology
Bio-concentration factor BCF (l kg-1) 3 A5 Low potential
CT50 (days) 1.1 -
Mammals - Acute oral LD50 (mg kg-1) 431 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) > 20 A5 Mice High
(ppm diet) > 100 -
Birds - Acute LD50 (mg kg-1) 500 A5 Colinus virginianus Moderate
Birds - Short term dietary (LC50/LD50) > 5600 mg kg feed-1 A4 Unknown species -
Fish - Acute 96 hour LC50 (mg l-1) > 93 A5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) > 50 A5 Oncorhynchus mykiss Low
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 91 A5 Daphnia magna Moderate
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 22.7 A5 Daphnia magna Low
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) 1.6 A5 Lemna gibba Moderate
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 16.2 A4 Unknown species Low
Algae - Chronic 96 hour NOEC, growth (mg l-1) 56 Q2 Unknown species Low
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 100 A5 Low
Oral acute 48 hour LD50 (μg bee-1) > 100 A5 Low
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) > 988 A5 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 7.7 Mortality
Fecundity
Dose: 1.8 kg ha-1
A5 Aphidius rhopalosiphi
-
Other arthropod (2) LR50 g ha-1 - - -
% Effect 23 Mortality
Dose: 1.064 g ha-1
A5 Carabus nemoralis
-
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 33.6 kg ha-1
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for mecoprop-P

General:
Property Click here for information on the parameters used to describe human health and protection issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with human health and protection data Interpretation Click here for information on the way in which we interpret human health and protection data
Threshold of Toxicological Concern (Cramer Class) Click here for a note on the limitations of the Cramer class High (class III) - -
Mammals - Acute oral LD50 (mg kg-1) 431 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 2.13 A5 Rat, 4 hr (whole body) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.01 A5 Rat, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) None allocated A5 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.04 A5 Rat, 90 day, SF=100 -
Dermal penetration studies (%) 1-10 A5 concentration dependent -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public No unacceptable risks to bystanders identified
Occupational No unacceptable risks to operators or other workers using PPE/PPC identified
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) - - -

Health issues:
Carcinogen Mutagen Endocrine disrupter Reproduction / development effects Cholinesterase inhibitor Neurotoxicant

-

Respiratory tract irritant Skin irritant Skin sensitiser Eye irritant Phototoxicant

General human health issues Possible kidney & liver toxicant
USEPA - some evidence to suggest possible human carcinogen

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

Handling issues:
Property Click here for information on the parameters used to describe substance handling issues Value Source/Quality Score/Other Information Click here for information on the primary data sources used to populate this database with data on handling issues Interpretation Click here for information on the way in which we interpret data on handling issues
General Click here for a description of the International Maritime Dangerous Goods (IMDG) codes Prevent generation of mists
Not explosive or oxidising
IMDG Transport Code is usually 9
CLP classification 2013 Health: H302, H318
Environment: H411
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R22, R41
N - Dangerous for the environment: R51, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S13, S26, S37/39, S60, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number Usually 3082
Waste disposal & packaging Click here for a description of UN packaging marks Packaging Group III (minor danger)


TRANSLATIONS

for mecoprop-P

Language Name
English mecoprop-P
French mecoprop-P
German Mecoprop-P
Danish mechlorprop-P
Italian mecoprop-P
Spanish mecoprop-P
Greek mecoprop-P
Slovenian mekoprop-P
Polish mekoprop-P
Swedish mekoprop-P
Hungarian mecoprop-P
Dutch mecoprop-P

Record last updated: Wednesday 31 October 2018
Contact: aeru@herts.ac.uk