Manganese bis(phosphinate)

Endpoint summary

Description of key information

Short-term toxicity to aquatic invertebrates

Short term toxicity test was carried out to study the effects of test chemical on aquatic invertebrate.

Effective concentration EC50 to 50% of Daphnia magna when exposed to Phosphoric acid for 48 hr is 105 mg/L. It can be concluded from the Intoxication value that the test chemical is not toxic/toxic to the aquatic invertebrateand can be considered as “not classified” as per the classification criteria for aquatic environment.

Toxicity to aquatic algae and cyanobacteria

72 hr-EC50 of test chemical to Selenastrum capricornutum was more than 100 mg/L. After 72 hours of exposure no effects was observed. It can be concluded from the growth rate value that the test chemical is not toxic aquatic algaeand can be considered as “not classified” as per the classification criteria for aquatic environment.

Additional information

Short-term toxicity to aquatic invertebrates

Following studies of structurally andfunctionallysimilar read across has ben assessed to conclude the toxicity extent of manganese(2+) bis(phosphinate) (CAS: 10043-84-2) towards aquatic invertebrate is summarized as follows:

Experimental study 1 suggests that the Short term toxicity test was carried out to study the effects of test chemical on aquatic invertebrate.Effective concentration EC50 to 50% of Daphnia magna when exposed to Phosphoric acid for 48 hr is 105 mg/L. It can be concluded from the Intoxication value that the test chemical is not toxic to the aquatic invertebrateand can be considered as “not classified” as per the classification criteria for aquatic environment.

Similar supporting study 2 also suggesting that the Short term toxicity test was carried out for 48 hrs to study the effects of Manganese dioxide on aquatic invertebrate.48hr-EC50of test chemical to daphnia magna was more than100 mg/L(nominal concentration). No immobilization and adverse effects were observed. It can be concluded from the value that the test chemical is not toxic to the aquatic invertebrate and can be considered as “not classified” as per the classification criteria for aquatic environment.

Thus based on the effect concentrations of structurally andfunctionallysimilar read across it gives the conclusion that test substance

manganese(2+) bis(phosphinate) (CAS: 10043-84-2) is likely to be not toxic to aquatic environment at environmentally relevant concentrations and applying weight of evidence approach it can be considered to be “not classified” as per the CLP classification criteria.

Toxicity to aquatic algae and cyanobacteria

Following studies of structurally andfunctionallysimilar read across has ben assessed to conclude the toxicity extent of manganese(2+) bis(phosphinate) (CAS: 10043-84-2) towards aquatic algae is summarized as follows:

Experimental study 1 suggests that the 72 hr-EC50 of test chemical to Selenastrum capricornutum was more than 100 mg/L. After 72 hours of exposure no effects was observed. It can be concluded from the growth rate value that the test chemical is not toxic aquatic algaeand can be considered as “not classified” as per the classification criteria for aquatic environment.

Similar supporting study 2 also suggesting that the Acute toxicity test was carried out for 72 hr to study the effects of test chemical on aquatic algae. The 72hr-EC50 values expressed in terms of the mean measured concentration of test chemical to Pseudokirchneriella subcapitata. No abnomalities were detected in any of the cultures and there was no sign of contamination by foreign algal cells or protozoa.

Thus based on the effect concentrations of structurally andfunctionallysimilar read across it gives the conclusion that test substance

manganese(2+) bis(phosphinate) (CAS: 10043-84-2) is likely to be not toxic to aquatic environment at environmentally relevant concentrations and applying weight of evidence approach it can be considered to be “not classified” as per the CLP classification criteria.