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cyanophos (Ref: OMS 226)
** cyanofos ** ciafos ** cyanox ** OMS 869 ** S 4084 ** ENT 25675 ** Translations

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

SUMMARY

Cyanophos is an organophosphate insecticide without EU regulatory approval for use. It has a low aqueous solubility, is quite volatile and, based on its chemical properties, it is slightly mobile. Little is known about its environmental persistence. It is moderately toxic to mammals and has a high risk of bioaccumulating. It is an Acetyl cholinesterase inhibitor and a neurotoxin. It shows a moderate to high level of toxicity to fish, algae and daphnia.

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

Description: An insecticide used to control aphids and other insects in rice and other crops / situations

Example pests controlled: Aphids; Rice borers; Houseflies; Nematodes

Example applications: Rice; Non-agricultural situations

Efficacy & activity: -

Availability status: Unknown

Introduction & key dates: 1966, Japan

EC Regulation 1107/2009 (repealing 91/414):
Status Not approved
Dossier rapporteur/co-rapporteur Not applicable
Date inclusion expires Not applicable
EU Candidate for substitution (CfS) Not applicable
Listed in EU database No

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: Japan

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism -
Chemical formula C9H10NO3PS
Canonical SMILES COP(=S)(OC)OC1=CC=C(C=C1)C#N
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) SCKHCCSZFPSHGR-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/C9H10NO3PS/c1-11-14(15,12-2)13-9-5-3-8(7-10)4-6-9/h3-6H,1-2H3
2D structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Insecticide
Substance group Organophosphate
Minimum active substance purity -
Known relevant impurities -
Substance origin Synthetic
Mode of action Acetylcholinesterase (AChE) inhibitor.
CAS RN 2636-26-2
EC number 220-130-0
CIPAC number None allocated
US EPA chemical code 268200
PubChem CID 17522
Molecular mass (g mol-1) 243.2
PIN (Preferred Identification Name) O-(4-cyanophenyl) O,O-dimethyl phosphorothioate
IUPAC name O-4-cyanophenyl O,O-dimethyl phosphorothioate
CAS name O-(4-cyanophenyl) O,O-dimethyl phosphorothioate
Other status information Marine pollutant
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) 1B
Fungicide Resistance Classification (FRAC) Not applicable
Examples of recorded resistance -
Physical state Yellow-brown liquid with a faint odour
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
  • Sumitomo Chemical Co.
  • Fertiagro Pte. Ltd
  • Bayer
Example products using this active
  • Fertnox
  • Cyanox
  • Ciafos
  • CYAP
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually supplied as dusts, emulsifiable concentrates and oil-based liquid sprays.


ENVIRONMENTAL FATE

for cyanophos

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) 46 F3 Low
Solubility - In organic solvents at 20oC (mg l-1) Miscible F3 - Methanol -
Miscible F3 - Ethanol -
Miscible F3 - Xylene -
Melting point (oC) 14 F3 -
Boiling point (oC) Decomposes before boiling L3 -
Degradation point (oC) 119 L3 -
Flashpoint (oC) 104 L3 -
Octanol-water partition coefficient at pH 7, 20oC P 4.47 X 1002 Calculated -
Log P 2.65 L3 Low
Bulk density (g ml-1)/Specific gravity 1.260 L3 -
Dissociation constant (pKa) at 25oC - - -
Note:
Vapour pressure at 20oC (mPa) 105 F3 Highly volatile
Henry's law constant at 25oC (Pa m3 mol-1) - - -
GUS leaching potential index Click here for a note on the limitations of the GUS index 0.97 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 8.31 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 Low
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) 7 Q2 Non-persistent
DT50 (lab at 20oC) - - -
DT50 (field) - - -
DT90 (lab at 20oC) - - -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note Limited data available, one study reports that after two weeks, measurable radioactivity in C14-cyanophos treated soils decreased to 6%
Dissipation rate RL50 on plant matrix Value - - -
Note -
Dissipation rate RL50 on and in plant matrix Value 0.54 R3 -
Note Kidney bean leaves, n=1
Aqueous photolysis DT50 (days) at pH 7 Value - - -
Note -
Aqueous hydrolysis DT50 (days) at 20oC and pH 7 Value - - -
Note -
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 - Q2 Slightly mobile
Koc 714
Notes and range Estimated
Freundlich Kf - - -
Kfoc -
1/n -
Notes and range -
pH sensitivity -

Other known metabolites:
Metabolite name and reference Aliases Formation medium / Rate Estimated maximum occurrence fraction Metabolising enzymes
cyanophoson - Soil (Photolysis) - -
desmethylcyanophoson - Soil (Photolysis) - -
4-cyanophenol - Soil (Photolysis) - -


ECOTOXICOLOGY

for cyanophos

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) 417 F3 Guppies Threshold for concern
CT50 (days) ND -
Mammals - Acute oral LD50 (mg kg-1) 610 F4 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) 8.2 L3 Cyprinidae Moderate
Fish - Chronic 21 day NOEC (mg l-1) - - -
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) 0.097 L3 Daphnia magna High
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) 4.8 L2 Unknown species 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 cyanophos

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) 610 F4 Rat Moderate
Mammals - Dermal LD50 (mg kg-1 body weight) > 2000 L3 Rat -
Mammals - Inhalation LC50 (mg l-1) > 1.5 L3 Rat, 4 hr -
Other Mammal toxicity endpoints Acute percutaneous LD50 > 2000 mg kg-1 E3 Rat -
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 List I; List II - -
Exposure Limits - - -
Exposure Routes Public -
Occupational May be absorbed through the skin or via inhalation
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 dyspnea, vomiting, diarrhea, abdominal pain, prolonged exposure may result in CNS damage or death

: 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 Rapidly decomposes under alkaline conditions and upon exposure to light realsing toxic gases
Not explosive or oxidising
CLP classification 2013 -
EC Risk Classification Click here to view information omn the EU risk phrases Xn - Harmful: R21/22
N - Dangerous for the environment: R50, R53
EC Safety Classification Click here to view information omn the EU safety phrases S2, S36/37, S60, S61
WHO Classification II - Moderately hazardous
US EPA Classification (formulation) III - Caution - Slightly toxic
UN Number 3018
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for cyanophos

Language Name
English cyanophos
French cyanophos
German Cyanophos
Danish cyanophos
Italian cianofos
Spanish cianofos
Greek cyanophos
Slovenian cianofos
Polish cyjanofos
Swedish -
Hungarian -
Dutch cyanofos

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