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bromomethane
** methyl bromide ** monobromomethane ** methyl fume ** 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 bromomethane

Description: A multiaction fumigant used to control insects, weeds, rodents and pathogens

Example pests controlled: Termites; Rats; mice; nematodes; Soil-borne diseases; Weed seedlings

Example applications: Agricultural commodities; Non-agricultural situations including commercial structures, grain elevators; clothes, furniture

Availability status: Current

Introduction & key dates: circa 1935

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

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, USA

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Soil sterilant, Fumigant, Insecticide
Substance group Inorganic compound
Minimum active substance purity 990 g/kg
Known relevant impurities EU dossier - None declared
Substance origin Synthetic
Mode of action Respiratory action, highly toxic
CAS RN 74-83-9
EC number 200-813-2
CIPAC number 128
US EPA chemical code 53201
Chiral molecule No
Chemical formula CH3Br
SMILES BrC
International Chemical Identifier key (InChIKey) GZUXJHMPEANEGY-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/CH3Br/c1-2/h1H3
Structure diagram/image available? Yes
Molecular mass (g mol-1) 94.95
PIN (Preferred Identification Name) bromomethane
IUPAC name bromomethane
CAS name bromomethane
Other status information Montreal Protocol agreed phase out; Marine Pollutant; Chemical subject to PIC regulations
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 8A
Fungicide Resistance Classification (FRAC) Not known
Examples of recorded resistance Sitophilus granarius
Sitophilus granarius
Tribolium confusum
Physical state Colourless gas
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 -
Example products using this active -
UK LERAP status None
Formulation and application details Gaseous formulation used for fumigation treatments.


ENVIRONMENTAL FATE
for bromomethane

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) 13200 A5 High
Solubility - In organic solvents at 20oC (mg l-1) 718000 A5 - Acetone -
228100 A5 - Kerosene -
925000 A5 - Ethyl acetate -
Melting point (oC) -93.7 A5 -
Boiling point (oC) 3.56 A5 -
Degradation point (oC) - - -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 8.13 X 1001 Calculated -
Log P 1.91 A5 Low
Bulk density (g ml-1)/Specific gravity 3.97 F4 -
Dissociation constant (pKa) at 25oC Not applicable A5 -
Note: No dissociation
Vapour pressure at 25oC (mPa) 190000000 A5 Highly volatile
Henry's law constant at 25oC (Pa m3 mol-1) 13625.1 A5 Volatile
Henry's law constant at 20oC (dimensionless) 5.50 X 1002 K3 Volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.00 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 8.50 X 10-04 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 Medium
Maximum UV-vis absorption L mol-1 cm-1 202nm = 3.1 A5 -
Surface tension (mN m-1) - - -

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
Soil degradation (days) (aerobic) DT50 (typical) 55 G4 Moderately persistent
DT50 (lab at 20oC) 1 A3 Non-persistent
DT50 (field) - - -
DT90 (lab at 20oC) 30 A3 -
DT90 (field) - - -
Note EU dossier lab studies estimated values DT50 range 2.5-47 hours, DT90 30.8 days
Plant matrix DT50 (days) Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 12 A5 Non-persistent
Note pH and temperature sensitive
Water-sediment DT50 (days) - - -
Water phase only DT50 (days) - - -

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 2.48 A4 Mobile
Koc 39
Notes and range EU dossier Kd range 2.07-2.98 mL/g, Koc range 37.7-41.4 mL/g, Soils=4
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity No


ECOTOXICOLOGY
for bromomethane

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) 75 Q2 Estimated Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 104 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) 73 A5 Colinus virginianus High
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 3.9 A5 Oncorhynchus mykiss Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 2.6 A5 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) - - -
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) - - -
Non-target plants - - -
- - -
Algae - Acute 72 hour EC50, growth (mg l-1) 3.2 A5 Scenedesmus quadricauda Moderate
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) > 50 L2 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 bromomethane

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) 104 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) - - -
Mammals - Inhalation LC50 (mg l-1) 3.0 A5 Rat, 4 hr (whole body) -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.001 A3 1yr Dog, SF=100 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.003 A2 Dog, SF=100 -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) 100 A3 default -
Dangerous Substances Directive 76/464 - - -
Exposure Limits [LT TWA 8hr: 20 mg/m3], [ST 15 mins: 60 mg/m3 skin], [Acceptable air conc EU: 0.08 ppm 7hr repeat] Occupation Exposure -
Exposure Routes Public -
Occupational Acceptable if PPE/PPC used
European MRLs Click here for the EU MRL pesticide database
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 Mutagenic potential
Highly toxic
Brain, kidney, respiratory toxicant
IARC Group 3 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 Highly corrosive
IMDG Transport Code is usually 2.3
CLP classification 2013 -
EC Risk Classification Click here to view information omn the EU risk phrases Mutagenic category 3: R68
T - Toxic: R23/25
Xn - Harmful: R48/20
Xi - Irritant: R36/37/38
N - Dangerous for the environment: R50, R59
EC Safety Classification Click here to view information omn the EU safety phrases S1/2, S15, S27, S36/39, S38, S45, S59, S61
WHO Classification FM - Fumigant, not classified
US EPA Classification (formulation) II - Warning - Moderately toxic
UN Number Usually 1062
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS
for bromomethane

Language Name
English bromomethane
French bromure de methyle
German Methylbromid
Danish methylbromid
Italian bromuro di metile
Spanish bromuro de metil
Greek methylbromide
Slovenian metil bromid
Polish bromek metylu
Swedish -
Hungarian metil-bromid
Dutch broommethaan

Record last updated: Friday 18 December 2015
Contact: aeru@herts.ac.uk