| Picloram-olamine |
![]() Last updated: 16/07/2026 |
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(Not known by any other names) |
| SUMMARY |
| Hazard alerts |
The following Pesticide Hazard Tricolour (PHT) 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. The alerts for Highly Hazardous Pesticides (HHPs) are based on applying the FAO/WHO (Type 1) and the PAN (Type II) criteria to PPDB data. Further details on the HHP indicators are given in the tables below. Neither the PHT nor the HHP hazard alerts take account of usage patterns or exposure, thus they do not represent risk.
| PHT: Environmental fate | PHT: Ecotoxicity | PHT: Human health | Highly Hazardous Pesticide |
|---|---|---|---|
Warning:Significant data are missing |
Warning:Significant data are missing |
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A herbicide which is a variant of picloram, used for the control of broadleaved weeds on non-crop and utility areas | |
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Woody plants; Brush; Broadleaved weeds including leafy spurge, knapweeds, thistles, toadflax, birdsfood trefoil and hoary cress. Will not control crucifers | |
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Non-cropped areas; Rangeland | |
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| GB regulatory status |
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Approved | ||
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31/12/2029 | ||
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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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Poland/Czech Republic | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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15/02/2028 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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No | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Yes - as picloram | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Additional information |
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| Chemical structure |
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None | |
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C₉H₁₀Cl₃N₃O₃ | |
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NCCO.NC1=C(C(=NC(=C1Cl)Cl)C(=O)O)Cl | |
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IFYBRLPVVJLYIF-UHFFFAOYSA-N | |
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InChI=1S/C6H3Cl3N2O2.C2H7NO/c7-1-3(10)2(8)5(9)11-4(1)6(12)13;3-1-2-4/h(H2,10,11)(H,12,13);4H,1-3H2 | |
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Yes |
| General status |
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Herbicide | ||||||||||||||
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Pyridine herbicide; Picolinic acid herbicide | ||||||||||||||
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Synthetic | ||||||||||||||
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Selective, systemic absorbed by roots and leaves and translocated. Synthetic auxin. | ||||||||||||||
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55871-00-6 | ||||||||||||||
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No data found | ||||||||||||||
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174 | ||||||||||||||
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No data found | ||||||||||||||
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314.55 | ||||||||||||||
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4-amino-3,5,6-trichloropyridine-2-carboxylic acid—2-aminoethan-1-ol (1:1 | ||||||||||||||
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4-amino-3,5,6-trichloropyridine-2-carboxylic acid - 2-aminoethanol (1:1) | ||||||||||||||
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4-amino-3,5,6-trichloro-2-pyridinecarboxylic acid compound with 2-aminoethanol (1:1) | ||||||||||||||
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Marine pollutant | ||||||||||||||
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O | ||||||||||||||
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4 | ||||||||||||||
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Not applicable | ||||||||||||||
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Not applicable | ||||||||||||||
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| Commercial |
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Current | |||
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Circa 2013, introduced | |||
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Selected: Galera (Open in PFC)  
 Selected: Galera Super (Open in PFC)  
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Typically formulated as a soluble concentrate (liquid) or soluble granules. A ready-to-use formulation was also available. | |||
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Picloram-olamine is produced through a neutralisation based industrial process begins with preparation and purification of picloram acid via the established chlorinated-pyridine route characteristic of the picolinic acid herbicide family. The purified acid is then dissolved or slurried in water and reacted with triethanolamine under controlled pH and temperature, ensuring complete salt formation while preventing unwanted esterification between the acid and the amine’s hydroxyl groups. Once the neutralisation reaches the required stoichiometry, the resulting aqueous picloram-olamine solution is filtered to remove any insoluble residues, adjusted for active-ingredient concentration, and standardised for pH, viscosity, and density. | |||
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560 | 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 picloram4 = Verified data |
Moderate | ||||||||
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1.20 X 10-02 | Calculated | - | |||||||
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-1.92 | 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 picloram4 = Verified data |
Low | ||||||||
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Insoluble | 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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Regulatory data | 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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8.0 X 10-05 | 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 picloram4 = Verified data |
Low volatility | ||||||||
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| Degradation |
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23.0 | 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 picloram4 = Verified data |
Non-persistent | |||||||
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23.0 | 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 picloram4 = Verified data |
Non-persistent | ||||||||
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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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| Fate indices |
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Cannot be calculated | - | - | |||||||||||||||||||||||||
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| Known soil metabolites |
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Major fraction | - | - |
| Known groundwater metabolites |
None
| Other known metabolites |
None
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| Terrestrial ecotoxicology |
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4012 | 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 ) Rat as picloram4 = Verified data |
Low | ||||||||
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300 | 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 ) Rat 90-day as picloram4 = Verified data |
Low | ||||||||
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60 | 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 ) Rat 2-yr as picloram4 = Verified data |
Moderate | ||||||||
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> 1944 | 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 picloram4 = Verified data |
Moderate | ||||||||
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> 1904 | 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 ) Colinus virginianus as picloram4 = Verified data |
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65.0 | 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 ) Colinus virginianus as picloram4 = Verified data |
Moderate | ||||||||
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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 picloram4 = Verified data |
Low | |||||||
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> 74 | 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 picloram4 = Verified data |
Moderate | ||||||||
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| Aquatic ecotoxicology |
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8.8 | 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 ) Oncorhynchus mykiss as picloram4 = Verified data |
Moderate | ||||||||
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44.2 | 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 ) Daphnia magna as picloram4 = Verified data |
Moderate | ||||||||
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> 78.69 | 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 ) Raphidocelis subcapitata as picloram4 = Verified data |
Low | ||||||||
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19.27 | 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 ) Raphidocelis subcapitata as picloram4 = Verified data |
Low | ||||||||
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| Regulatory Threshold Levels (RTLs) |
Note: These RTLs have been calculated using the regulatory approach used in the European Union and based on ecotoxocity values in the PPDB.
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12 | Worst case of acute and chronic mammals | |||
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13 | Worst case of acute and chronic birds | |||
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No data | No data for acute and chronic earthworms | |||
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No data | No data for non-target plants vegetative vigour and seedling emergence | |||
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1.48 | Worst case of contact and oral honeybees | |||
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No data | No data for parasitic wasps and predatory mites | |||
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0.088 | Worst case of temperate acute and chronic fish | |||
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0.442 | Worst case of temperate acute and chronic aquatic invertebrates | |||
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7.869 | Worst case of free-floating plants, rooted plants, acute and chronic algae |
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| General |
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High (class III) | - | - | ||||||||
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4012 | 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 ) Rat as picloram4 = Verified data |
Low | ||||||||
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300 | 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 ) Rat 90-day as picloram4 = Verified data |
Low | ||||||||
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60 | 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 ) Rat 2-yr as picloram4 = Verified data |
Moderate | ||||||||
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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 ) as picloram5 = 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 ) as picloram5 = 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 ) as picloram5 = Verified data used for regulatory purposes |
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| Health issues |
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No further information available | ||||||||||||||||||||||||||||
| Handling issues |
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No information available | |||
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Health: H319 | |||
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U (Unlikely to present an acute hazard) | |||
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picloram-olamine | ||
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| Record last updated: | 16/07/2026 |
| Contact: | aeru@herts.ac.uk |
| Please cite as: |
Tzilivakis, J., Lewis, K.A., Green, A. and Warner, D.J. (2026) A decade of growth and impact of the Pesticide Properties Database (PPDB). Human and Ecological Risk Assessment: An International Journal, 32(6), 1104-1129. DOI: 10.1080/10807039.2026.2702066 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 |
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