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bromacil (Ref: DPX N0976)
** borocil ** herbicide 976 ** 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 bromacil

Description: A soil acting uracil herbicide used to control a wide variety of annual and perennial weeds mainly on non-crop areas and fruit

Example pests controlled: Barnyardgrass; Crabgrass; Henbit; Lambsquarters; Purslane; Annual sedge; Mustard; Bermudagrass; Nutsedge

Example applications: Fruit including citrus, pineapples; Brush; Roads, rights-of-way, railways, pavements

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1961, USA

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Expired
EU Candidate for substitution (CfS) -
Listed in EU database Yes

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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism A chiral molecule esixting in the R- and S-forms
Chemical formula C9H13BrN2O2
Canonical SMILES CCC(C)N1C(=O)C(=C(NC1=O)C)Br
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) CTSLUCNDVMMDHG-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H13BrN2O2/c1-4-5(2)12-8(13)7(10)6(3)11-9(12)14/h5H,4H2,1-3H3,(H,11,14)
2D structure diagram/image available? Yes

Click to access the Cambridge Crystallographic Data Centre (CCDC) website
Cambridge Crystallographic Data Centre diagrams:
Common Name Relationship Link
Bromacil Unstated isomer Click here for the CCDC structure diagram

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide
Substance group Uracil
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Absorbed mainly via root system, non-selective. Inhibits photosynthesis (photosystem II).
CAS RN 314-40-9
EC number 206-245-1
CIPAC number 139
US EPA chemical code 012301
PubChem CID 9411
Molecular mass (g mol-1) 261.12
PIN (Preferred Identification Name) rac-(3R)-5-bromo-3-(butan-2-yl)-6-methylpyrimidine-2,4(1H,3H)-dione
IUPAC name (RS)-5-bromo-3-sec-butyl-6-methyluracil
CAS name 5-bromo-6-methyl-3-(1-methylpropyl)-2,4(1H,3H)-pyrimidinedione
Other status information Potential groundwater contaminant; Potential marine pollutant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) C1
Herbicide Resistance Classification (WSSA) 5
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state White crystals
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
  • Nufarm
  • DuPont
  • Loveland
  • Makhteshim-Agan
Example products using this active
  • Hyvar X bromoacil
  • Borocil 1V
  • Cynogan
  • Borea
  • Krovar II
  • Urgan
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Available in a variety of formulations including wettable powders, water soluble liquids and granules.


ENVIRONMENTAL FATE

for bromacil

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) 815 G4 High
Solubility - In organic solvents at 20oC (mg l-1) 167000 C4 - Acetone -
134000 C4 - Ethanol -
32000 C4 - Xylene -
Melting point (oC) 158.5 L3 -
Boiling point (oC) Decomposes before boiling L3 -
Degradation point (oC) 158 L3 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable L3 -
Octanol-water partition coefficient at pH 7, 20oC P 7.59 X 1001 Calculated -
Log P 1.88 H4 Low
Bulk density (g ml-1)/Specific gravity 1.59 L3 -
Dissociation constant (pKa) at 25oC 9.27 H4 -
Note: Very weak acid
Vapour pressure at 20oC (mPa) 4.10 X 10-02 H4 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 1.50 X 10-05 H4 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 3.44 Calculated High 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 5.51 X 10-01 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 - - -
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
General biodegradability -
Soil degradation (days) (aerobic) DT50 (typical) 60 R4 Moderately persistent
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Other sources: DT50 5-6 months in silt loam soil (R3)
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value - - -
Note -
Aqueous photolysis DT50 (days) at pH 7 Value Stable St - ble at pH 5 and pH 7 -
Note CA3
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value Stable R4 -
Note Stable at all relevant pHs
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 - G3 Mobile
Koc 32
Notes and range Other sources: log Koc 1.51 (Q3); General literature: Koc 2.3 to 289 (CA3)
Freundlich Kf 2.9 R4 Moderately mobile
Kfoc 117
1/n 0.917
Notes and range Data for freshwater sediments Kf range 0.56-6.35 mL.g, Kfoc range 26.3-289 mL/g, 1/n range 0.89-0.98, Soils = 9
pH sensitivity -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
5-bromo-6-methyluracil - Soil (Aerobic) - -
5-bromo-3-sec-butyl-6-hydroxymethyluracil - Soil (Aerobic) - -
3-sec-butyl-6-methyluracil - Soil (Aerobic) - -
5-bromo-3-(alpha-hydroxymethylpropyl)-6-methyluracil - Soil (Aerobic) - -


ECOTOXICOLOGY

for bromacil

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) 2.8 F4 Whole fish Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 1300 L3 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - L2 Rat, 2 year -
(ppm diet) 50 -
Birds - Acute LD50 (mg kg-1) > 2250 L3 Colinus virginianus Low
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) > 36 L3 Lepomis macrochirus Moderate
Fish - Chronic 21 day NOEC (mg l-1) > 95.6 L2 Pimephales promelas Low
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 119 L3 Daphnia magna Low
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) - - -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) > 67.0 F3 Americamysis bahia Moderate
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) 0.013 C4 Unknown species Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) 0.01 J4 Green algae, population study Moderate
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) > 100 L3 Low
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 Harmless Dose: 960 g ha-1
AA2 Typhlodromus pyri
-
Other arthropod (2) LR50 g ha-1 - - -
% Effect Harmless Dose: 960 g ha-1
AA2 Chrysoperla carnea
-
Soil micro-organisms - - -
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for bromacil

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) 1300 L3 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 5000 L3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 5.6 L3 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.13 L3 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) - - -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) - - -
Dermal penetration studies (%) - - -
Dangerous Substances Directive 76/464 - - -
Exposure Limits [UK LT TWA 8 hr: 11 mg/m3 (1 ppm)], [STEL 15 mins: 22 mg/m3 (2 ppm)] MEL UK HSE -
Exposure Routes Public -
Occupational -
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
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 May cause inflammation of the stomach and intestinal mucous membranes, gastroenteritis or liver damage

: 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 No information available
CLP classification 2013 -
EC Risk Classification Click here to view information omn the EU risk phrases N - Dangerous for the environment: R50/53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S13, S20/21, S35, S46, S57
WHO Classification U - Unlikely to present an acute hazard
US EPA Classification (formulation) IV (solid), II (liquid) - Caution - Not acutely toxic, Warning - Moderately toxic
UN Number 3077
Waste disposal & packaging Click here for a description of UN packaging marks Packging Group III (minor danger)


TRANSLATIONS

for bromacil

Language Name
English bromacil
French bromacil
German Bromacil
Danish bromacil
Italian bromacile
Spanish bromacilo
Greek -
Slovenian bromacil
Polish bromacyl
Swedish -
Hungarian -
Dutch -

Record last updated: Tuesday 30 October 2018
Contact: aeru@herts.ac.uk