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potassium phosphonates (Ref: LBG 01F34)
** phosphite ** phosphonate ** KPP ** potassium phosphite ** 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 potassium phosphonates

Description: A mixture of two (mono- and di-) inorganic potassium salts that has fungicidal properties and is used to control Pythium and Phytophthora on a variety of fruit and ornamental crops

Example pests controlled: Pythium spp.; Phytophthora spp. including root rot

Example applications: Fruit including avocados, apples; Ornamentals; Trees

Efficacy & activity: -

Availability status: Current

Introduction & key dates: 1997, USA

EC Regulation 1107/2009 (repealing 91/414):
Status Approved
Dossier rapporteur/co-rapporteur France
Date inclusion expires 30/09/2023
EU Candidate for substitution (CfS) No
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

Chemical structure: Click here for further information on the general chemical status information used on this site
Isomerism None
Chemical formula KH2PO3 & K2HPO3
Canonical SMILES OP(O)O.[K+]
Isomeric SMILES No data
International Chemical Identifier key (InChIKey) UUCFTYONLUTOFU-UHFFFAOYSA-N
International Chemical Identifier (InChI) InChI=1S/K.H3O3P/c;1-4(2)3/h;1-3H/q+1;
Structure diagram/image available? Yes

General status: Click here for further information on the general chemical status information used on this site
Pesticide type Fungicide
Substance group Inorganic compound
Minimum active substance purity <31.6 phosphonate ions, <20% potassium
Known relevant impurities EU dossier - none declared
Substance origin Synthetic
Mode of action Mixed mode of application including direct toxicity to plant pathogens reducing populations and promotion of plants natural defences
CAS RN 13977-65-6
Alternative/old CAS RN 12492-26-7
EC number -
CIPAC number -
US EPA chemical code 076416
PubChem CID No data
Molecular mass (g mol-1) 139 (mean)
PIN (Preferred Identification Name) -
IUPAC name Reaction mixture of Potassium hydrogen phosphonate and dipotassium phosphonate
CAS name Reaction mixture of Potassium hydrogen phosphonate and dipotassium phosphonate
Other status information -
Relevant Environmental Water Quality Standards -
Herbicide Resistance Classification (HRAC) Not applicable
Herbicide Resistance Classification (WSSA) Not applicable
Insecticide Resistance Classification (IRAC) Not applicable
Fungicide Resistance Classification (FRAC) None
Examples of recorded resistance -
Physical state Deliquescent solids supplied in aqueous solution
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
  • Luxembourg Industries (Pamol) Ltd
  • UIM Agrochemicals (Australia)
Example products using this active
  • Stamina
UK LERAP status No UK approval for use as a pesticide under EC Regulation 1107/2009
Formulation and application details Usually supplied as an aqueous solution with a variety of application methods used including foliar sprays, soil drenches and root dips.


ENVIRONMENTAL FATE

for potassium phosphonates

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) 500000 A3 High
Solubility - In organic solvents at 20oC (mg l-1) - - -
Melting point (oC) 73 A4 -
Boiling point (oC) Decomposes before boiling A5 -
Degradation point (oC) 180 A5 -
Flashpoint (oC) Not expected to self ignite; Not highly flammable A5 -
Octanol-water partition coefficient at pH 7, 20oC P - - -
Log P - - -
Bulk density (g ml-1)/Specific gravity 1.65 A5 -
Dissociation constant (pKa) at 25oC 2.0 A4 -
Note: PKa(2) = 6.59
Vapour pressure at 20oC (mPa) - - -
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 2.89 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 2.85 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) 142 A3 Persistent
DT50 (lab at 20oC) 142 A3 Persistent
DT50 (field) - - -
DT90 (lab at 20oC) 381 A5 -
DT90 (field) - - -
DT50 modelling endpoint - - -
Note EU dossier lab studies DT50 range 88-196 days, DT90 range 319-442 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 - - -
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 10.7 A5 Moderately mobile
Koc 453.6
Notes and range EU dossier Kd range 3.1-18.96 mL/g, Koc range 228-972 mL/g, soils=5
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
Phosphoric acid - - - -


ECOTOXICOLOGY

for potassium phosphonates

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) Low risk A5 Low potential
CT50 (days) - -
Mammals - Acute oral LD50 (mg kg-1) > 5000 A5 Rat Low
Mammals - Short term dietary NOEL (mg kg-1) - - -
(ppm diet) - -
Birds - Acute LD50 (mg kg-1) > 2250 A5 Colinus virginianus, as phosphonic acid Low
Birds - Short term dietary (LC50/LD50) > 5620 mg kg feed-1 A5 Colinus virginianus, as phosphonic acid -
Fish - Acute 96 hour LC50 (mg l-1) > 118 A5 Oncorhynchus mykiss, as phosphonic acid Low
Fish - Chronic 21 day NOEC (mg l-1) 100 A5 Oncorhynchus mykiss, as phosphonic acid Low
Aquatic invertebrates - Acute 48 hour EC50 (mg l-1) > 118 A5 Daphnia magna, as phosphonic acid Low
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) 100 A5 Chironmus riparius, as phosphonic acid Low
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) - - -
Algae - Chronic 96 hour NOEC, growth (mg l-1) 146.7 A5 Scenedesmus subspicatus, as phosphonic acid Low
Honeybees Contact acute 48 hour LD50 (μg bee-1) - - -
Oral acute 48 hour LD50 (μg bee-1) > 145 A5, as potassium phosphonates Low
Unknown mode acute 48 hour LD50 (μg bee-1) - - -
Earthworms - Acute 14 day LC50 (mg kg-1) > 1000 A5 Eisenia foetida, as phosphonic acid Low
Earthworms - Chronic 14 day NOEC, reproduction (mg kg-1) 182.5 A5 Eisenia foetida, as phosphonic acid Low
Other soil macro-organisms - e.g. Collembola LR50 / EC50 / NOEC / % Effect - - -
Other arthropod (1) LR50 g ha-1 - - -
% Effect 12.82 Mortality
Dose: 2.02 kg ha-1, as phosphonic acid
A5 Alphidius rhopalosiphi
-
Other arthropod (2) LR50 g ha-1 - - -
% Effect 10.8 Mortality
Dose: 2.02 kg ha-1, as phosphonic acid
A5 Typhlodromus pyri
-
Soil micro-organisms Nitrogen mineralisation: Minor transient effects
Carbon mineralisation: Minor transient effects
A5
Dose: up to 26.99 mg posphonic acid/kg soil, 28 days
-
Mesocosm study data NOEAEC mg l-1 - - -
NOEAEC mg l-1 - - -


HUMAN HEALTH AND PROTECTION

for potassium phosphonates

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) > 5000 A5 Rat Low
Mammals - Dermal LD50 (mg kg-1 body weight) > 4000 A5 Rat -
Mammals - Inhalation LC50 (mg l-1) > 5.05 A5 Rat -
Other Mammal toxicity endpoints - -
ADI - Acceptable Daily Intake (mg kg-1bw day-1) 2,25 A5 -
ARfD - Acute Reference Dose (mg kg-1bw day-1) None allocated A5 -
AAOEL - Acute Acceptable Operator Exposure Level (mg kg-1 bw day-1) - - -
AOEL - Acceptable Operator Exposure Level - Systemic (mg kg-1bw day-1) 5.0 A5 -
Dermal penetration studies (%) 100 A5 default -
Dangerous Substances Directive 76/464 - - -
Exposure Limits - - -
Exposure Routes Public Negligible risks identified for proposed uses
Occupational Negligible risks identified for proposed uses
European MRLs Click here for the EU MRL pesticide database
Drinking Water Standards - - -
Drinking Water MAC (μg l-1) 10.5 A5 -

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 No further information available

: 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 Not oxisiding or explosive
CLP classification 2013 Health: H315, H319
EC Risk Classification Click here to view information omn the EU risk phrases Xi -Irritant: R36
EC Safety Classification Click here to view information omn the EU safety phrases -
WHO Classification NL - Not listed
US EPA Classification (formulation) - -
UN Number -
Waste disposal & packaging Click here for a description of UN packaging marks -


TRANSLATIONS

for potassium phosphonates

Language Name
English potassium phosphonates
French -
German -
Danish -
Italian -
Spanish -
Greek -
Slovenian -
Polish -
Swedish -
Hungarian -
Dutch -

Record last updated: Friday 14 September 2018
Contact: aeru@herts.ac.uk