iodomethane

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

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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): 0 cellpadding= 5 cellspacing= 1 width= 99% > valign= top bgcolor= #E2E2E2 > Status valign= top bgcolor= #E2E2E2 > Not listed valign= top bgcolor= #E2E2E2 > Dossier rapporteur/co-rapporteur valign= top bgcolor= #E2E2E2 > Not applicable valign= top bgcolor= #E2E2E2 > Date inclusion expires valign= top bgcolor= #E2E2E2 > Not applicable > Approved for use () or known to be used () in the following European countries: 0 cellpadding= 5 cellspacing= 1 width= 99% > bgcolor= #E2E2E2 >

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> Also registered in: [2012 - Withdrawn from the US market]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 key (InChIKey) INQOMBQAUSQDDS-UHFFFAOYSA-N

International Chemical Identifier (InChI) InChI=1S/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

Herbicide Resistance Classification (WSSA) 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 & suppliers 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 20^oC (mg l^-1)		14200	F3	High
Solubility - In organic solvents at 20^oC (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, 20^oC	P	3.98 X 10⁰¹	Calculated	-
Octanol-water partition coefficient at pH 7, 20^oC	Log P	1.6	F3	Low
Bulk density (g ml^-1)/Specific gravity		2.8	F3	-
Dissociation constant (pKa) at 25^oC		-	-	-
Dissociation constant (pKa) at 25^oC		Note:
Vapour pressure at 25^oC (mPa)		166100000	Q3	Volatile
Henry's law constant at 25^oC (Pa m³ mol^-1)		-	-	-
Henry's law constant at 20^oC (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 20^oC) - - -

DT50 (field) - - -

DT90 (lab at 20^oC) - - -

DT90 (field) - - -

Note: -

Aqueous photolysis DT50 (days) at pH 7 Value - - -

Note -

Aqueous hydrolysis DT50 (days) at 20^oC 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 K_d - Q2 Moderately mobile

K_oc 155

Notes and range Estimated

Freundlich K_f - - -

K_foc -

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
Bio-concentration factor	CT₅₀ (days)	-	Q3 Based on LogP < 3	-
Bioaccumulation potential		-	Calculated	Low
Mammals - Acute oral LD₅₀ (mg kg^-1)		> 79.8	F3 Rat	High
Mammals - Short term dietary NOEL	(mg kg^-1)	-	-	-
Mammals - Short term dietary NOEL	(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	Contact acute 48 hour LD₅₀ (μg bee^-1)	-	-	-
	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	-	-	-
Other arthropod (1)	% Effect	-	-	-
Other arthropod (2)	LR₅₀ g ha^-1	-	-	-
Other arthropod (2)	% Effect	-	-	-
Soil micro-organisms		-	-	-
Mesocosm study data	NOEAEC mg l^-1	-	-	-
Mesocosm study data	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 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

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 key (InChIKey)	INQOMBQAUSQDDS-UHFFFAOYSA-N
International Chemical Identifier (InChI)	InChI=1S/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
Herbicide Resistance Classification (WSSA)	Not applicable
Insecticide Resistance Classification (IRAC)	Not known
Fungicide Resistance Classification (FRAC)	Not known
Physical state	Courless transparent liquid
Related substances & organisms	-

Property	Value
Example manufacturers & suppliers 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	-

Carcinogen	Mutagen	Endocrine disrupter	Reproduction / development effects	Cholinesterase inhibitor	Neurotoxicant	Respiratory tract irritant	Skin irritant	Eye irritant
	-	-		-
General human health issues		Toxic May damage corneal