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hydramethylnon (Ref: BAS 315l)
** AC 217300 ** CL 217300 ** Translations

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

GENERAL INFORMATION
for hydramethylnon

Description: An insecticide used in baits to control ants and cockroaches in both indoor and outdoor applications

Introduction: circa 1980

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur -
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

Also registered in: Australia, USA

General status:
Pesticide type Insecticide
Substance group Unclassified
Substance origin Synthetic
Mode of action Non-systemic, selective with stomach action. Mitochondrial complex III electron transport inhibitor.
CAS RN 67485-29-4
EC number 405-090-9
CIPAC number 8177
US EPA chemical code 118401
Chiral molecule No
Chemical formula C25H24F6N4
SMILES FC(F)(F)c1ccc(cc1)\C=C\C(=N/N/C2=N/CC(C)(C)CN2)/C=C/c3ccc(cc3)C(F)(F)F
International Chemical Identifier key (InChIKey) IQVNEKKDSLOHHK-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C25H24F6N4/c1-23(2)15-32-22(33-16-23)35-34-21(13-7-17-3-9-19(10-4-17)24(26,27)28)14-8-18-5-11-20(12-6-18)25(29,30)31/h3-14H,15-16H2,1-2H3,(H2,32,33,35)/b13-7+,14-8+
Structure diagram/image available? Yes
Molecular mass (g mol-1) 494.48
PIN (Preferred Identification Name) -
IUPAC name 5,5-dimethylperhydropyrimidin-2-one 4-trifluoromethyl-α-(4-trifluoromethylstyryl)cinnamylidenehydrazone
CAS name tetrahydro-5,5-dimethyl-2(1H)-pyrimidinone [3-[4-(trifluoromethyl)phenyl]-1-[2-[4-(trifluoromethyl)phenyl]ethenyl]-2-propenylidene]hydrazone
Other status information OSPAR soc; PAN Bad actor pesticide
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 20A
Fungicide Resistance Classification (FRAC) Not applicable
Physical state Dark yellow crystalline solid
Related substances & organisms -

Formulations:
Property Value
Example manufacturers & suppliers of products using this active
  • BASF
  • Pacific Agriscience Pte. Ltd.
Example products using this active
  • Maxforce
  • Amdro
  • Siege
UK LERAP status No UK approval for use or outside scope
Formulation and application details Usually supplied in a ready to use oily bait formulation.


ENVIRONMENTAL FATE

for hydramethylnon

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 0.006 G4 Low
Solubility - In organic solvents at 20oC (mg l-1) 360000 L3 - Acetone -
72000 L3 - Ethanol -
230000 L3 - Methanol -
94000 L3 - Xylene -
Melting point (oC) 190 E3 -
Boiling point (oC) - - -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 2.04 X 1002 Calculated -
Log P 2.31 G4 Low
Bulk density (g ml-1)/Specific gravity 1.67 B5 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 25oC (mPa) 2.70 X 10-03 B5 Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1) 7.81 X 10-01 E3 Moderately volatile
Henry's law constant at 20oC (dimensionless) 9.14 X 10-05 Calculated Volatile
GUS leaching potential index -1.86 Calculated Low leachability
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value 5.35 X 10-03 Calculated -
Note Estimated concentrations of chemicals with Koc values greater than 9995 ml g-1 are beyond the scope of the regression data used in SCI-GROW development. If there are concerns for such chemicals, a higher tier groundwater exposure assessment should be considered, regardless of the concentration returned by SCI-GROW
Potential for particle bound transport index - Calculated Medium
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) 10 DW3 Non-persistent
DT50 (lab at 20oC) 10 G3 Non-persistent
DT50 (field) 7 G3 Non-persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note Other sources: DT50 7-10 days (G3, L3), 10 days (DW4), 45 days (B3)
Aqueous photolysis DT50 (days) at pH 7 Value 7 B5 Moderately fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 10 B5 Non-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 - G3 Non-mobile
Koc 730000
Notes and range Other sources: Koc range 3300 - 8677 mL/g (CA3)
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
1,5-bis(alpha, alpha, alpha-tri-fluoro-p-tolyl)-1,4-pentadiene-3-one - Water (Photolysis) - -
4H-pyrimido[2-1,C] as-triazio-4-one-1,6,7,8-tetrahydro-7,7-dimethyl-3-[p-(trifluoro-methyl)-styryl - Water (Photolysis) - -


ECOTOXICOLOGY

for hydramethylnon

Property Value Source/Quality Score/Other Information Interpretation
Bio-concentration factor BCF 34900 F4 Whole fish High potential
CT50 (days) Not available -
Bioaccumulation potential - Calculated Low
Mammals - Acute oral LD50 (mg kg-1) > 1130 B5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - L3 Rat -
(ppm diet) 50 -
Birds - Acute LD50 (mg kg-1) 1828 B5 Colinus virginianus Moderate
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.16 B5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 1.14 B5 Daphnia magna Moderate
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) 0.14 F4 Chironomus plumosus Moderate
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) 0.018 F3 Pseudokirchneriella subcapitata Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees Contact acute 48 hour LD50 (μg bee-1) > 30 L3 Moderate
Oral acute 48 hour LD50 (μg bee-1) - - -
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) - - -
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 hydramethylnon

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) > 1130 B5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 5000 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) > 5.0 L3 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 List II - -
Exposure Limits - - -
Exposure Routes Public -
Occupational Occupational exposure may occur through inhalation and dermal contact
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 Cholinesterase inhibitor Neurotoxicant Respiratory tract irritant Skin irritant Eye irritant

-

-

General human health issues No further information available

: 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 No information available
CLP classification 2013 -
EC Risk Classification T - Toxic: R48/25
Xn - Harmful: R22
Xi - Irritant: R36
N - Dangerous for the environment: R50, R53
EC Safety Classification S2, S22, S26, S36/37, S45, S60, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number -
Waste disposal & packaging -


TRANSLATIONS

for hydramethylnon

Language Name
English hydramethylnon
French hydramethylnon
German Hydramethylnon
Danish hydramethylnon
Italian idrametilnon
Spanish hidrametilnona
Greek -
Slovenian hidrametilnon
Polish hydrametylnon
Swedish hydrametylnon
Hungarian -
Dutch -

Record last updated: Thursday 26 June 2014
Contact: aeru@herts.ac.uk