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iodomethane (Ref: TM 425)
** monoiodomethane ** MeI ** methyl iodide ** Translations

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

GENERAL INFORMATION
for iodomethane

Description: A pre-plant biocide used to control insects, plant parasitic nematodes, soil borne pathogens and weed seeds.

Introduction: 2004, Japan

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

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Also registered in: [2012 - Withdrawn from the US market]

General status:
Pesticide type Soil sterilant, Insecticide, Nematicide
Substance group Alkyl iodide
Substance origin Synthetic
Mode of action Fumigant action thought to be via the nucleophilic displacement (SN2) reaction in various amino acids and peptides within target organisms
CAS RN 74-88-4
EC number 200-819-5
CIPAC number -
US EPA chemical code 000011
Chiral molecule No
Chemical formula CH3I
SMILES IC
International Chemical Identifier (InChI) InChI=1/CH3I/c1-2/h1H3
Structure diagram/image available? Yes
Molecular mass (g mol-1) 141.94
PIN (Preferred Identification Name) iodomethane
IUPAC name methyl iodide
CAS name iodomethane
Other status information -
Herbicide Resistance Classification (HRAC) Not applicable
Insecticide Resistance Classification (IRAC) Not known
Fungicide Resistance Classification (FRAC) Not known
Physical state Courless transparent liquid
Related substances & organisms -

Formulations:
Property Value
Example manufacturers of products using this active -
Example products using this active -
UK LERAP status No UK approval for use or outside scope
Formulation and application details -


ENVIRONMENTAL FATE

for iodomethane

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 14200 F3 High
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) -66.5 F3 -
Boiling point (oC) 42 L3 -
Degradation point (oC) - - -
Flashpoint (oC) Not expected to self ignite; Not highly flammable CA3 -
Octanol-water partition coefficient at pH 7, 20oC P 3.98 X 1001 Calculated -
Log P 1.6 F3 Low
Bulk density (g ml-1)/Specific gravity 2.8 F3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 25oC (mPa) 166100000 Q3 Volatile
Henry's law constant at 25oC (Pa m3 mol-1) - - -
Henry's law constant at 20oC (dimensionless) 6.82 X 10-01 Calculated Volatile
GUS leaching potential index - - -
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value - - -
Note -
Potential for particle bound transport index - - -
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) - - -
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
Note: -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

Soil adsorption and mobility:
Property Value Source/Quality Score/Other Information Interpretation
Linear Kd - Q2 Moderately mobile
Koc 155
Notes and range Estimated
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for iodomethane

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) > 79.8 F3 Rat High
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 40.0 F4 Colinus viriginianus High
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 1.12 F4 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) - - -
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) - - -
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 iodomethane

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) > 79.8 F3 Rat High
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 F3 Rat -
Mammals - Inhalation LC50 (mg l-1) 4.0 F3 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 - - -
Exposure Limits [LT TLV: 10 mg/l air] Q3 -
Exposure Routes Public -
Occupational May be absorbed by the 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 Toxic
May damage corneal

: 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
Methyl iodide gases may be generated
CLP classification 2013 -
EC Risk Classification Carcinogen category 3: R40
T - Toxic: R23, R25
Xn - Harmful: R21
Xi - Irritant: R37, R38
EC Safety Classification S36, S37, S38, S45
WHO Classification NL - Not listed
US EPA Classification (formulation) - -
UN Number -
Waste disposal & packaging -


TRANSLATIONS

for iodomethane

Language Name
English iodomethane
French -
German -
Danish -
Italian -
Spanish -
Greek -
Slovenian -
Polish -
Swedish -
Hungarian -
Dutch -

Record last updated: Thursday 31 July 2014
Contact: aeru@herts.ac.uk