The SAN List of Highly Hazardous Pesticides consists of 230 pesticides:

SAN HHP Pesticides are classified as Highly Hazardous Pesticides according to the definition of the FAO/WHO Panel of Experts on Pesticide Management (JMPM) consisting of more than 200 active ingredients. The JMPM, in their 2nd session in October 2008, recommended that highly hazardous pesticides should be defined as having one or more of the following characteristics:

a) Pesticide formulations that meet the criteria of classes Ia (extremely hazardous) or Ib (highly hazardous) of the WHO Recommended Classification of Pesticides by Hazard;

b) Pesticide active ingredients and their formulations that meet the criteria of carcinogenicity Categories 1A and 1B of the GHS;

c) Pesticide active ingredients and their formulations that meet the criteria of mutagenicity Categories 1A and 1B of the GHS;

d) Pesticide active ingredients and their formulations that meet the criteria of reproductive toxicity Categories 1A and 1B of the GHS;

e) Pesticide active ingredients listed by the Stockholm Convention in its Annexes A and B, and those meeting all the criteria in paragraph 1 of Annex D of the Convention;

f) Pesticide active ingredients and formulations listed by the Rotterdam Convention in its Annex III;

g) Pesticides listed under the Montreal Protocol;

Pesticide active ingredients and formulations that have shown a high incidence of severe or irreversible adverse effects on human health or the environment: SAN has interpreted this WHO/FAO parameter with the reclassification of paraquat dichloride, as scientific evidence has revealed that this substance poses severe risks to human health. Atrazine has also been included in this list because of scientific evidence of water contamination. Additionally, the three neonicotinoids clothianidin, imidacloprid and thiamethoxam and the phenylpyrazole fipronil have been incorporated in the SAN HHP List, because they significantly affect bee populations, other pollinators and birds, can persist for years in soils, and can leach into waterways and groundwater, where they have depleted insect abundance and diversity. SAN also included the three active ingredients aluminum phosphide, magnesium phosphide and phosphine in the list, as their use as a fumigant to control rodent populations in storage facilities can lead to death by inhalation.