Glyphosate-monopotassium |
Last updated: 19/05/2024 |
(Also known as: glyphosate; potassium glyphosate) |
SUMMARY |
Data alerts |
The following alerts are based on the data in the tables below. An absence of an alert does not imply the substance has no implications for human health, biodiversity or the environment but just that we do not have the data to form a judgement.
Environmental fate | Ecotoxicity | Human health |
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A herbicide used in a wide range of cropping, utility and industrial situations to control annual and perennial grasses and broad-leaved weeds | |
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Annual and perennial weeds, Broad-leaved weeds, Grasses | |
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Agriculture including cereals; Soybeans, Glyphosate tolerant crops; Horticulture; Forestry; Domestic gardens, lawns | |
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Efficacy demonstrated by field trials and extensive global use | |
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Current | |
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1971, first reported; 1974, first introduced |
UK regulatory status |
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Approved | ||
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15/12/2025 | ||
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Check label - may vary with formulation |
EC Regulation 1107/2009 (repealing 91/414) |
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Approved | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Assessment Group on Glyphosate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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15/12/2033 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Additional information |
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Australia, USA |
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Chemical structure |
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None | |
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C₃H₇KNO₅P | |
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C(C(=O)O)NCP(=O)(O)[O-].[K+] | |
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Not applicable | |
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LIOPHZNMBKHGAV-UHFFFAOYSA-M | |
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InChI=1S/C3H8NO5P.K/c5-3(6)1-4-2-10(7,8)9;/h4H,1-2H2,(H,5,6)(H2,7,8,9);/q;+1/p-1 | |
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Yes |
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Common Name | Relationship | Link |
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glyphosate | Parent |
General status |
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Herbicide | |
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Organophosphate herbicide; Phosphonoglycine herbicide | |
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950 g kg⁻¹ | |
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EU RAR 2021 - Formaldehyde <1.0 g kg⁻¹; N-nitroso-glyphosate <1 mg kg⁻¹; Formic acid <4 g kg⁻¹; Triethylamine <2 g kg⁻¹ | |
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Synthetic | |
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Broad-spectrum, systemic, contact action translocated and non-residual. Inhibition of EPSP synthase. | |
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39600-42-5 | |
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687-795-3 | |
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284.019 | |
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103613 | |
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23716553 | |
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607-315-00-8 | |
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207.19 | |
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N-(phosphonomethyl)glycine monopotassium salt | |
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N-(phosphonomethyl)glycine monopotassium salt | |
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N-(phosphonomethyl)glycine potassium salt | |
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Risk of herbicide resistance developing - anti-resistance management required; PAN listed Highly Hazardous Chemical | |
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- | |
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G | |
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9 | |
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Not applicable | |
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Not applicable | |
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Solid | |
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Formulations |
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Wide range of formulations are available |
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923300 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
High | ||||||||
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10.2 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Acetone5 = Verified data used for regulatory purposes |
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10.2 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Dichloromethane5 = Verified data used for regulatory purposes |
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217 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Methanol5 = Verified data used for regulatory purposes |
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10.2 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Toluene5 = Verified data used for regulatory purposes |
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219.8 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Decomposes before boiling | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 4 = Verified data |
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2.00 X 10-01 | Calculated | - | |||||||
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-0.7 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low | ||||||||
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5.73 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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1.5 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Low volatility. If applied directly to plants or soil, drift is a concern & mitigation is advisable | ||||||||
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3.38 X 10-07 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
Non-volatile | ||||||||
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No max absorption 200-900nm at pH 1, 5 & 13 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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72.7 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 91.8%5 = Verified data used for regulatory purposes |
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Degradation |
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16.11 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Non-persistent | |||||||
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16.11 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Non-persistent | ||||||||
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6.45 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Non-persistent | ||||||||
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296.82 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Persistent | ||||||||
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120 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
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Data for glyphosate acid EFSA 2021 RAR; Lab studies DT₅₀ range 0.7-78.9 days, DT₉₀ range 14.9-1660 days, Soils=10; field studies DT₅₀ range 1.1-13.7 days, DT₉₀ range 54.4-201 days, Soils =6 | ||||||||||
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20.8 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Fast | ||||||||
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9.9 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Moderately fast | ||||||||
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As this parameter is not normally measured directly, a surrogate measure is used: ‘Photochemical oxidative DT₅₀’. Where data is available, this can be found in the Fate Indices section below. | ||||||||||
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Soil adsorption and mobility |
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70.85 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) as glyphosate4 = Verified data |
Non-mobile | |||||||
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5436 | ||||||||||
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0.69 | ||||||||||
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Data for glyphosate acid EFSA 2021 RAR: Kf range 18.1-166.4 mL g⁻¹, Kfoc range 1031-9615, 1/n range 0.540-0.777, Soils=10 | ||||||||||
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Fate indices |
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0.21 | Calculated | Low leachability | ||||||||||||||||||||||||||
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5.44 X 10-03 | Calculated | - | |||||||||||||||||||||||||
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Medium | Calculated | - | ||||||||||||||||||||||||||
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Non-mobile | Calculated | - | ||||||||||||||||||||||||||
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Known soil metabolites |
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Major fraction | 1.0 | - | |||||
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Major fraction | 0.469 | - |
Known groundwater metabolites |
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Relevant | - | - | ||||||
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Relevant | - | - |
Other known metabolites |
None
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Terrestrial ecotoxicology |
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> 2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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> 2241 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Colinus virginianus5 = Verified data used for regulatory purposes |
Low | ||||||||
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116 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Anas platyrhynchos as glyphosate4 = Verified data |
Moderate | ||||||||
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> 5600 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Eisenia foetida as glyphosate4 = Verified data |
Low | ||||||||
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21.31 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Eisenia foetida as glyphosate4 = Verified data |
Moderate | ||||||||
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587 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Folsomia candida as glyphosate4 = Verified data |
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> 100 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Apis mellifera as glyphosate4 = Verified data |
Low | |||||||
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> 104 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Apis mellifera as glyphosate4 = Verified data |
Low | ||||||||
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> 179 | A4 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Apis mellifera as glyphosate4 = Verified data |
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Aquatic ecotoxicology |
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> 1193 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Oncorhynchus mykiss5 = Verified data used for regulatory purposes |
Low | ||||||||
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> 278 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Daphnia magna5 = Verified data used for regulatory purposes |
Low | ||||||||
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. 0.25 | F4 F = U.S. EPA ECOTOX database / U.S. EPA pesticide fate database / Miscellaneous WHO documents / FAO data, IPCS INCHEM data (US EPA Databases Related to Pesticide Risk Assessment ) Ceriodaphnia dubia LC₅₀4 = Verified data |
Moderate | ||||||||
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> 35.0 | L3 L = Pesticide manuals and hard copy reference books / other sources Selenastrum capricornutum3 = Unverified data of known source |
Low | ||||||||
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General |
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High (class III) | - | - | ||||||||
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> 2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
Low | ||||||||
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2000 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat5 = Verified data used for regulatory purposes |
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> 5.0 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rat 4 hr (nose only)5 = Verified data used for regulatory purposes |
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0.5 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Dog & Rat SF=100 as Glyphosate5 = Verified data used for regulatory purposes |
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1.5 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rabbit SF=100 as Glyphosate5 = Verified data used for regulatory purposes |
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0.3 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Rabbit SF=500 as Glyphosate5 = Verified data used for regulatory purposes |
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0.1 | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) Dog & Rabbit SF=500 as Glyphosate5 = Verified data used for regulatory purposes |
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Risks to bystanders and residents considered low | |||||||||
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PPE/PPC recommended to reduce risks | ||||||||||
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GB MRL amended July 2021 | ||||||||||
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Rapid and extensive - approx 90% in 24hrs mainly via faeces | A5 A = EU regulatory and evaluation data as published by EC, EFSA (RAR, DAR & Conclusion dossiers), EMA (e.g. EU Annex III PIC DGD) (EU - Pesticides database; EFSA Scientific Publications ) 5 = Verified data used for regulatory purposes |
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Health issues |
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IARC Group 2A carcinogen; US EPA - no evidence to support classification as human carcinogen; EFSA - inconclusive data for cancer in humans Possible bladder and liver toxicant |
Handling issues |
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IMDG Transport Hazard Class 9 Not oxidising or explosive Not expected to auto-ignite; Not highly flammable |
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Health: H318 Environment: H411 |
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III (Slightly hazardous) | |||
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UN3077 | |||
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Packaging Group III (minor danger) | |||
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Chemically stable under standard ambient conditions |
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glyphosate-monopotassium | ||
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Record last updated: | 19/05/2024 |
Contact: | aeru@herts.ac.uk |
Please cite as: | Lewis, K.A., Tzilivakis, J., Warner, D. and Green, A. (2016) An international database for pesticide risk assessments and management. Human and Ecological Risk Assessment: An International Journal, 22(4), 1050-1064. DOI: 10.1080/10807039.2015.1133242 |