Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Short-term toxicity to fish

Experimental study available for target from handbook The Dictionary of Substances and their Effects, volume 5,1999 for short term toxicity to fish endpoint of test chemical Ammonium molybdate(VI)( CAS No. 13106 -76 -8). Barbus barbus was exposed to Ammonium molybdate(VI) for 96 h, 50 % mortality was observed at 550 mg/l, it can be concluded that the Ammonium molybdate(VI) is not toxic to fish. Thus based on the available concentration which is 550 mg/L for target chemical which come to the conclusion that the test chemical. Ammonium molybdate(VI)( CAS No. 13106 -76 -8) was likely to be non toxic to fish as it does not exceed the classification citeria, it can be considered to be not classified as per the CLP regulation.

Short-term toxicity to aquatic invertebrates

The experimental result available for target Ammonium molybdate (VI) from peer reviewed journal Marine pollution Bulletein. 1977, which suggests that effect of Ammonium molybdate (VI) (CAS No. 13106 -76 -8) on Eupargurus bernhardus was studied at a controlled experiment at 14.5 degree C showed that it can be tolerate a pH of 5.0-6.0 for 24 h without mortality. 32.8 g kg-1 is the salinity. 50 % mortality was observed that is LC 50 for Eupargurus bernhardus was found to be >191 - <254 at 48hrs.On the basis of the value obtained it can be concluded that the Ammonium molybdate (VI) is not toxic to aquatic invertebrates and can be considered "not classified" under CLP regulation.

Toxicity to aquatic algae and cyanobacteria

Toxicity to algae test was performed for Ammonium molybdate(VI) onScenedesmus subspicatus for 72 hrs, theNo observed effect concentrations (NOEC) obtained is 25mg/L.On the basis of No observed effect concentrations (NOEC) obtained 25mg/L it can be concluded that the Ammonium molybdate(VI) is not toxic to algae Scenedesmus subspicatus.

Additional information

Short-term toxicity to fish

Experimental study available for target from handbook The Dictionary of Substances and their Effects, volume 5,1999 for short term toxicity to fish endpoint of test chemical Ammonium molybdate(VI)( CAS No. 13106 -76 -8). Barbus barbus was exposed to Ammonium molybdate(VI) for 96 h, 50 % mortality was observed at 550 mg/l, it can be concluded that the Ammonium molybdate(VI) is not toxic to fish. Thus based on the available concentration which is 550 mg/L for target chemical which come to the conclusion that the test chemical Ammonium molybdate(VI)( CAS No. 13106 -76 -8) was likely to be non toxic to fish as it does not exceed the classification citeria, it can be considered to be not classified as per the CLP regulation.

Short-term toxicity to aquatic invertebrates

Four studies of experimental data from peer reviwed journal for toxicity to aquatic algae endpoint of test chemicalAmmonium molybdate(VI) (CAS No. 13106-76-8)were summarised as follows:

 

The experimental data available for target from peer reviewed journalMarine Pollution Bulletin 1977, theLC 50 value for Eupagurus bernhardus was found to be ina range of >191 to <254 mg/l for 48 hrs when exposed to Ammonium molybdate(VI). On the basis of value obtained it can be concludede that the Ammonium molybdate(VI) is not toxic to aquatic invertebrates.

Similar experimental data available for target from peer reviewed journalMarine Pollution Bulletin 1977, the LD 50 value for Eupagurus bernhardus was found to be >127<254mg/Lfor 24 hrs when exposed to Ammonium molybdate(VI). On the basis of value obtained it can be concluded that the Ammonium molybdate(VI) is not toxic to aquatic invertebrates.

Another experimental data available for target from peer reviewed journalMarine Pollution Bulletin 1977, The LC 50 value for Eupagurus bernhardus was found to be >254mg/Lfor 48 hrs when exposed to Ammonium molybdate(VI). Based on the value it can be concluded that the Ammonium molybdate(VI) is not toxic to aquatic invertebrates.

Last study is also from the samepeer reviewed journalMarine Pollution Bulletin 1977, indicates that the LC 50 value for Carcinus maenas was found to be 1018mg/Lfor 48 hrs when exposed to Ammonium molybdate(VI). On the basis of value obtained it can be concluded that the Ammonium molybdate(VI) is not toxic to aquatic invertebrates.

Thus based on the effect concentrations which is in the range 191 to 1018 mg/L give the conclusion that test substanceAmmonium molybdate(VI) (CAS No. 13106-76-8)was likely to be non toxic to aquatic algae at environmentally relevant concentrations and can be considered to be not classified as per the CLP classification criteria.

Toxicity to aquatic algae and cyanobacteria

Two studies from experimental data from peer reviewed Journal for toxicity to aquatic algae endpoint of test chemicalAmmonium molybdate(VI) (CAS No. 13106-76-8)with relevant read across which is structurally similar were summarised as follows:

Experimentyal study available for target from peer reviewed JournalScience of the Total Environment 2010,suggests that the Toxicity to algae test was performed for Ammonium molybdate(VI) onScenedesmus subspicatus for 72 hrs, the No observed effect concentrations (NOEC) obtained is 25mg/L.On the basis of No observed effect concentrations (NOEC) obtained 25mg/L it can be concluded that the Ammonium molybdate(VI) is not toxic to algae Scenedesmus subspicatus. Based on the value it can be concluded that the Ammonium molybdate(VI) is not toxic to algae and cayanobacteria.

The above study is supported by experimental data of read across Molybdenum trioxide (CAS No.1313-27-5)from peer reviewed JournalScience of the Total Environment 2010, indicates that toxicity to algae test was performed for molybdenum trioxide on Scenedesmus subspicatus for 72 hrs, the No observed effect concentrations (NOEC) obtained is > 100 mg/L.

On the basis of No observed effect concentrations (NOEC) obtained > 100 mg/L it can be concluded that the molybdenum trioxide is not toxic to algae Scenedesmus subspicatus.

Thus based on the effect concentrations which is in the range 25 mg/l to >100 mg/L give the conclusion that test substance Ammonium molybdate(VI) (CAS No. 13106-76-8)s likely to be non toxic was likely to be non toxic to aquatic algae at environmentally relevant concentrations and can be considered to be not classified as per the CLP classification criteria.