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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 (InChI) InChI=1/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
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 - Acute 48 hour LD50 (μg bee-1) > 30 L3 Contact Moderate
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