This content is current only at the time of printing. This document was printed on 30 May 2017. A current copy is located at https://apvma.gov.au/node/19301
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Metal phosphides—priority 5
|Chemical class||Phosphine – group includes aluminium phosphide, magnesium phosphide and zinc phosphide|
|CAS Number||Aluminium phosphide (20859-73-8), Magnesium phosphide (12057-74-8), Zinc phosphide (1314-84-7)|
|Mode of action||24A – Mitochondrial complex IV electron transport inhibitors (aluminium phosphide, magnesium phosphide)|
|Target pests||Rabbits, insect pests, various moths, weevils, beetles, borers and mites|
|Hosts||Stored commodities such as seeds and grains, milled products, dried fruits and nuts, in processed foods and in animal foods|
|Formulations||Bait, sachet, tablet, gas generating product, granular, pellet and solid|
|Home garden use||No|
|No of Australian Approvals and Registrations||
Aluminium phosphide – 10 active constituents, 30 products
Magnesium phosphide – 1 active constituent, 1 productZinc phosphide – 6 active constituents, 15 products
|Poison schedule||No Schedule|
|Australian Health-based guidance values||No Australian ADI or ArfD established|
- Potential to cause harm to users and bystanders at low concentrations, particularly when used in poorly sealed storage facilities or in-truck grain treatment.
- Concern that use protocols are not being adhered to thereby leading to poor efficacy, worker safety and bystander safety.
- Concerns primarily relate the use of metal phosphides for grain treatment, not for rodent control.
- A label review is necessary to achieve consistent directions for use.
- Phosphine is key chemical for insect control in stored grain. Alternative chemical or physical control options are limited.
- The grain industry does not consider that use of phosphine poses unmanageable risk to public health, worker safety or the environment.
- It appears that some degree of insect resistance to phosphine has developed.