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barban (Ref: A-980)
** barbamate ** carbyne ** carbine ** CBN ** chlorinate ** Translations

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

SUMMARY

Barban is a post-emergence carbonate herbicide that does not have EU approval for use. It has a low aqueous solubility, is volatile and would not normally be expected to leach to groundwater. It is not persistent in soiI systems and is unlikely to be persistent in water systems. It has a moderate mammalian toxicity with a low potential for bioaccumulation. There are gaps in biodiversity toxicity data but it is reported to be moderately toxic to most aquatic species.

GENERAL INFORMATION Click here for an explantaion of the general chemical status information
for barban

Description: An obsolete, a post-emergent, selective herbicide for control of wild oats and other grasses

Example pests controlled: Wild oats; Canary grass; Italian ryegrass; Blackgrass

Example applications: Cereals, particular barley, wheat; Sugarbeet; Beans & peas; Flax; Lentils; Beet crops including mangolds; Some soft fruit

Efficacy & activity: -

Availability status: Obsolete

Introduction & key dates: 1958, first reported

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) Not applicable
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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C11H9Cl2NO2
Canonical SMILES C1=CC(=CC(=C1)Cl)NC(=O)OCC#CCCl
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) MCOQHIWZJUDQIC-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C11H9Cl2NO2/c12-6-1-2-7-16-11(15)14-10-5-3-4-9(13)8-10/h3-5,8H,6-7H2,(H,14,15)
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Herbicide
Substance group Carbamate
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Herbicidal action is due to anti-mitotic effects, reducing plant cellular division and so retarding shoot growth
CAS RN 101-27-9
EC number 202-930-4
CIPAC number 134
US EPA chemical code 017601
PubChem CID 7551
Molecular mass (g mol-1) 258.10
PIN (Preferred Identification Name) 4-chlorobut-2-yn-1-yl (3-chlorophenyl)carbamate
IUPAC name 4-chlorobut-2-ynyl 3-chlorocarbanilate
CAS name 4-chloro-2-butynyl (3-chlorophenyl)carbamate
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not known
Herbicide Resistance Classification (WSSA) -
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state Solid
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
  • No longer manufactured
Example products using this active
  • Neoban
  • Fisons B25
  • Carbyne
  • Dualweed
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details No longer available.


ENVIRONMENTAL FATE

for barban

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) 11.0 F3 Low
Solubility - In organic solvents at 20oC (mg l-1) 327000 R3 - Benzene -
113000 R3 - n-Butylbenzene -
257000 R3 - Toluene -
279000 R3 - Xylene -
Melting point (oC) 75 F3 -
Boiling point (oC) - - -
Degradation point (oC) 224 F3 -
Flashpoint (oC) - - -
Octanol-water partition coefficient at pH 7, 20oC P 2.57 X 1003 Calculated -
Log P 3.41 V3 High
Bulk density (g ml-1)/Specific gravity 1.39 V3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 0.05 H3 Low volatility
Henry's law constant at 25oC (Pa m3 mol-1) 1.17 X 10-03 H3 Non-volatile
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.70 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 3.67 X 10-03 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) 5 F3 Non-persistent
DT50 (lab at 20oC) - - -
DT50 (field) 9.5 F3 Non-persistent
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Field studies literature values DT50 range 4-15 days; Other general literature 1-60 days
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 - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 0.05 R4 Non-persistent
Note pH sensitive: 1.1 hours at pH7, 7 mins at pH8
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 - F3 Slightly mobile
Koc 1000
Notes and range Other sources: Koc 1200 mL/g estimate (CA2)
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -


ECOTOXICOLOGY

for barban

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) 2.2 Q3 Low potential
CT50 (days) Not available -
Mammals - Acute oral LD50 (mg kg-1) 527 V3 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) - - -
Birds - Short term dietary (LC50/LD50) - - -
Fish - Acute 96 hour LC50 (mg l-1) 0.53 J3 Cyprinus carpio Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.30 F4 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) 10.0 F3 Chlorella pyrenoidosa 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) - - -
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 barban

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) 527 V3 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 1600 V3 Rabbit -
Mammals - Inhalation LC50 (mg l-1) 27.4 V3 Rabbit, 4 hr -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) - - -
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 - - -
Exposure Routes Public General population exposure should be low or non-existent since barban is no longer produced or used
Occupational Occupational exposure should be low or non-existent since barban is no longer produced or used
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 contact dermatitis
Potential immunosuppressant

: 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 Xn - Harmful: R22, R43
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S24, S36/37, S60, S61
WHO Classification O - Obsolete substance
US EPA Classification (formulation) [Health: H302, H317], [Environment: H400, H410] - -, -, -, -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for barban

Language Name
English barban
French barbane
German Barban
Danish -
Italian -
Spanish Barban
Greek -
Slovenian -
Polish barban
Swedish -
Hungarian -
Dutch -

Record last updated: Wednesday 30 May 2018
Contact: aeru@herts.ac.uk