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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 key (InChIKey) CVXBEEMKQHEXEN-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/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
Herbicide Resistance Classification (WSSA) 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 Contact acute 48 hour LD50 (μg bee-1) 0.14 A5 High
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) < 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