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carbaryl (Ref: UC 7744)
** sevin ** OMS 29 ** OMS 629 ** ENT 23969 ** NMC ** Translations

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

SUMMARY

Carbaryl is an obsolete carbamate insecticide that is not approved for use in the EU. It has a low aqueous solubility and is non-volatile. It is not persistent in either soil or water systems. It is highly toxic to mammals but it is not expected to bioaccumulate. It is a suspected endocrine disruptor. Carbaryl is moderately toxic to birds, fish and algae but less toxic to aquatic plants.

GENERAL INFORMATION
for carbaryl

Description: An insecticide with a variety of uses including worm removal and fruit thinning

Introduction: circa 1957

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

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: Australia, USA

General status:
Pesticide type Insecticide, Plant growth regulator
Substance group Carbamate
Substance origin Synthetic
Mode of action Stomach and contact activity with slight systemic properties. Acetylcholinesterase (AChE) inhibitor.
CAS RN 63-25-2
EC number 200-555-0
CIPAC number 26
US EPA chemical code 056801
Chiral molecule No
Chemical formula C12H11NO2
SMILES c12c(OC(NC)=O)cccc1cccc2
International Chemical Identifier (InChI) InChI=1/C12H11NO2/c1-13-12(14)15-11-8-4-6-9-5-2-3-7-10(9)11/h2-8H,1H3,(H,13,14)
Structure diagram/image available? Yes
Molecular mass (g mol-1) 201.22
PIN (Preferred Identification Name) naphthalen-1-yl methylcarbamate
IUPAC name 1-naphthyl methylcarbamate
CAS name 1-naphthalenyl methylcarbamate
Other status information Marine Pollutant
Herbicide Resistance Classification (HRAC) Not applicable
Insecticide Resistance Classification (IRAC) 1A
Fungicide Resistance Classification (FRAC) Not applicable
Physical state White-grey powder
Related substances & organisms -

Formulations:
Property Value
Example manufacturers & suppliers of products using this active
  • Scotts Company
  • Bonide Products
  • Bayer CropScience
Example products using this active
  • Sevin XLR
  • Septene
  • Karbaspray
  • Devicarb
UK LERAP status No UK approval for use or outside scope
Formulation and application details Often formulated as a suspension concentrate that is mixed with water and applied using an orchard sprayer.


ENVIRONMENTAL FATE

for carbaryl

Property Value Source/Quality Score/Other Information Interpretation
Solubility - In water at 20oC (mg l-1) 9.1 A5 Low
Solubility - In organic solvents at 20oC (mg l-1) 250 A5 - n-Heptane -
9860 A5 - Xylene -
87500 A5 - Methanol -
175000 A5 - Ethyl acetate -
Melting point (oC) 138 A5 -
Boiling point (oC) 210 A5 -
Degradation point (oC) 254 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P 2.29 X 1002 Calculated -
Log P 2.36 A5 Low
Bulk density (g ml-1)/Specific gravity 1.21 A5 -
Dissociation constant (pKa) at 25oC 10.4 A5 -
Note: Very weak acid
Vapour pressure at 25oC (mPa) 0.0416 A5 Non-volatile
Henry's law constant at 25oC (Pa m3 mol-1) 9.20 X 10-05 A5 Non-volatile
Henry's law constant at 20oC (dimensionless) 4.50 X 10-04 K3 Volatile
GUS leaching potential index 2.02 Calculated Transition state
SCI-GROW groundwater index (μg l-1) for a 1 kg ha-1 or 1 l ha-1 application rate Value 5.85 X 10-02 Calculated -
Note -
Potential for particle bound transport index - Calculated Low
Maximum UV-vis absorption L mol-1 cm-1 Neutral solution: 220nm = 82696, 270nm = 5743, 279nm = 6434, 291nm = 4211; [Acidic solution: 221.5nm = 18362, 280.0nm = 6703, 295nm <2743 A5 -
Surface tension (mN m-1) 65.5 A5 at 20oC -

Degradation:
Property Value Source/Quality Score/Other Information Interpretation
Soil degradation (days) (aerobic) DT50 (typical) 16 A5 Non-persistent
DT50 (lab at 20oC) 16 A5 Non-persistent
DT50 (field) - - -
DT90 (lab at 20oC) 107 A5 -
DT90 (field) - - -
Note EU dossier lab studies DT50 range 2.3-98.7 days, DT90 range 13.3-328.6 days
Aqueous photolysis DT50 (days) at pH 7 Value 10 A5 Moderately fast
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value 12 A5 Non-persistent
Note pH sensitive: stable at pH 5; 3 hrs at pH 9
Water-sediment DT50 (days) 5.8 A5 Fast
Water phase only DT50 (days) 3.1 A5 Moderately fast

Soil adsorption and mobility:
Property Value Source/Quality Score/Other Information Interpretation
Linear Kd - DW3 Moderately mobile
Koc 300
Notes and range -
Freundlich Kf 2.6 A5 Moderately mobile
Kfoc 211
1/n 0.814
Notes and range EU dossier Kf range 1.74-3.52 mL/g, Kfoc range 177-249 mL/g, 1/n range 0.784-0.840, Soils=4; Literature data: Kf range 0.31-3.52 mL/g, kfoc range 134-320 mL/g, 1/n range 0.78-2.10, Soils = 8
pH sensitivity No

Key metabolites:
Metabolite Formation medium Estimated maximum occurrence fraction 91/414 relevancy
1-naphthol Soil   0.346   Major fraction, Relevant
methylamine Soil     -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
phthalic acid hydrated: - Water 0.063 -
- 2-hydroxycarbaryl Plant - -
- 4-hydroxycarbaryl Plant - -
- 5-hydroxycarbaryl Plant - -
phthalic acid - Water 0.064 -


ECOTOXICOLOGY

for carbaryl

Property Value Source/Quality Score/Other Information Interpretation
Bio-concentration factor BCF 44 A5 (Whole fish, Other literature Log BCF range 0.4-4.3 (R3)) Low potential
CT50 (days) 32-144 -
Bioaccumulation potential - Calculated Low
Mammals - Acute oral LD50 (mg kg-1) 614 A5 Rat Moderate
Mammals - Short term dietary NOEL (mg kg-1) 3.73 A4 Dog, 1 year High
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2000 A5 Anas platyrhynchos Moderate
Birds - Short term dietary (LC50/LD50) > 1000 mg kg bw-1 day-1 A5 Colinus virginianus -
Fish - Acute 96 hour LC50 (mg l-1) 2.6 A5 Pimephales promelas Moderate
Fish - Chronic 21 day NOEC (mg l-1) 0.21 A3 Pimephales promelas, 34 day -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.0064 A5 Daphnia pulex High
Aquatic invertebrates - Chronic 21 day NOEC (mg l-1) 0.25 A5 Daphnia magna -
Aquatic crustaceans - Acute 96 hour LC50 (mg l-1) 0.0057 A5 Americamysis bahia High
Sediment dwelling organisms - Acute 96 hour LC50 (mg l-1) 0.13 F3 Chironomus riparius, 1 day Moderate
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) 13.7 A5 Lemna gibba Low
Algae - Acute 72 hour EC50, growth (mg l-1) 0.6 F4 Chlorella spp. Moderate
Algae - Chronic 96 hour NOEC, growth (mg l-1) - - -
Honeybees - Acute 48 hour LD50 (μg bee-1) 0.14 A5 Contact High
Earthworms - Acute 14 day LC50 (mg kg-1) < 4 A5 Allolobophora caliginosa High
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 0.0247 48 hour
A5 Aphidius rhopalosiphi, adult
Harmful at 1 kg ha-1
Harmful at 0.1 kg ha-1
Harmful at 0.01 kg ha-1
% Effect - - -
Other arthropod (2) LR50 g ha-1 457 7 day
A5 Typhlodromus pyri, protonymph
Moderately harmful at 1 kg ha-1
Harmless at 0.1 kg ha-1
Harmless at 0.01 kg ha-1
% Effect - - -
Soil micro-organisms Nitrogen mineralisation: No significant adverse effect
Carbon mineralisation: No significant adverse effect
A5
Dose: 6.5 mg kg-1 soil
-
Mesocosm study data NOEAEC mg l-1 0.020 A1 Aquatic community, inappropriate test conditions -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for carbaryl

General:
Property Value Source/Quality Score/Other Information Interpretation
Mammals - Acute oral LD50 (mg kg-1) 614 A5 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 5000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) 2.4 A5 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 0.0075 A5 SF=2000 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) 0.01 A5 SF=100 -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 0.01 A5 SF=1000 -
Dermal penetration studies (%) 0.5-10 A5 concentration dependant -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public -
Occupational -
Examples of European MRLs (mg kg-1) Value Vegetables and fruit: 0.05: Cereal grains and tomatoes: 0.5
Note Current May 2007.
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 Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin

: 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 Not explosive but containers may explode when heated
Corrosive
IMDG Transport Code is usually 6.1
CLP classification 2013 -
EC Risk Classification Carcinogen category 3: R40
Xn - Harmful: R20/22
N - Dangerous for the environment: R50
EC Safety Classification S2, S36/37, S46, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) No consensus across products or no products available - -
UN Number 2757
Waste disposal & packaging Packaging Group III (minor danger)


TRANSLATIONS

for carbaryl

Language Name
English carbaryl
French carbaryl
German Carbaryl
Danish carbaryl
Italian carbaril
Spanish carbaril
Greek carbaryl
Slovenian karbaril
Polish karbaryl
Swedish -
Hungarian karbaril
Dutch carbaryl

Record last updated: Monday 30 June 2014
Contact: aeru@herts.ac.uk