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REACH

Phosphine

EC number: 232-260-8 | CAS number: 7803-51-2

Life Cycle description
Uses advised against

Ecotoxicological information

Toxicity to terrestrial arthropods

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Administrative data

Link to relevant study record(s)

Description of key information


The most sensitive species to Phosphine fumigant is C. chinensis, with a LD50 (24h) = 6.76 µg 


  
PH3/L

Key value for chemical safety assessment

Short-term EC50 or LC50 for soil dwelling arthropods:: 6.76

Additional information

Insects are a major target organism of phosphine. Due to its application, the toxicity of phosphine has been assessed by many authors during fumigation tests, during which formulated aluminium phosphide tablets were inserted into the fumigation chamber, so that the phosphine evolved by hydrolysis with the moisture. The aim of these tests was primarily to determine the effectiveness of the fumigant in killing different species of coleoptera and the species that proved to be the most tolerant. The results of these tests are not presented here, as there were judged not relevant. Indeed, as the aim of these tests is usually to consider the effectiveness of Phosphine in order to recommend this fumigant for crop treatment, and therefore no dose-response relationship is established and results are rarely expressed in terms of Lethal Concentration.

Among all the available studies, the same order of magnitude in toxicity was observed for different species of coleoptera. The results indicated that some parameters may have an influence on the toxicity of Phosphine, like the temperature, the life cycle stage considered, humidity, etc.

The most sensitive species tested is C. chinensis, with a LD50 (24h) = 6.76 µg PH3/L

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