Tris(pentane-2,4-dionato-O,O')vanadium

Endpoint summary

Description of key information

The parent compound Vanadium-tris-acetylacetonate is rapidly hydrolysed to 2,4 -pentanedione (CAS no. 123 -54 -6) and Vanadyl acetylacetonate (CAS no. 3153 -26 -2) in the presence of water (> 80% hydrolysis after 1h at pH 1.2, 4, 7 and 9). Hence, the half life is e.g. max. 1/48 of the test duration when put into aqueous test systems (e.g. daphnia (48 h test duration) or algae (72 h test duration) acute toxicity tests). Accordingly, the substance as such does not need to be tested in those systems and reliable data gained with the hydrolysis products 2,4-Pentadione (Cas no. 123-54-6) and Vanadyl acetylacetonate (3153-26-2) or comparable inorganic Vanadium compounds are used to adress the endpoint, which is entirely appropriate to draw conclusions on the toxicity of Vanadium-tris-acetylacetonate to aquatic organisms.

Short-term toxicity to fish:

freshwater species

Brachydanio rerio(Zebrafish), NaVO₃, semi static, freshwater, LC50 (96 h) = 2.9 mg V/L - VAA LC50 (96 h) = 19.8 mg VAA/L

Oncorhynchus mykiss(rainbow trout) - eyed eggs, V₂O₅, semi static, freshwater, LC50 (96 h) = 118 mg/L - VAA LC50 (96 h) = 451.8 mg VAA/L

Oncorhynchus mykiss(rainbow trout), 2,4 -pentanedione, flow-through, freshwater, LC50 (96 h) = 71.6 mg/L

Oncorhynchus mykiss(rainbow trout), 2,4 -pentanedione, flow-through, freshwater, LC50 (96 h) = 71.7- 92.4 mg/L

Leuciscus idus melanotus(Golden orfe), 2,4 -pentanedione, static, freshwater, LC50 (96 h) = 116 - 146 mg/L

marine species

Limanda limanda(Dab), NH₄VO₃, flow-through, saltwater, LC50 (96 h) = 27.8 mg/L - VAA LC50 (96 h) = 83.6 mg VAA/L

Short-term toxicity to aquatic invertebrates:

freshwater species

Daphnia magna, 2,4 -pentanedione, static, freshwater, LC50 (24 h) = 100 mg/L

Daphnia magna, 2,4 -pentanedione, static, freshwater, EC50 (24 h) = 40 mg/L

Daphnia magna, 2,4 -pentanedione, static, freshwater, EC50 (48 h) = 35.4 mg/L

Daphnia magna, 2,4 -pentanedione, static, freshwater, LC50 (48 h) = 47.6 mg/L

Daphnia magna, NaVO₃, static, freshwater, EC50 (48 h) = 3.5 mg V/L - VAA EC50 (48 h) = 23.9 mg VAA/L

marine species

Nereis diversicolor(annelid), NaVO₃, semi-static, salt water, LC50 (9 d) = 10 mg V/L - VAA LC50 (9 d) = 68.4 mg VAA/L

Carcinus maenas(crab), NaVO₃, semi-static, salt water, LC50 (9 d) = 35 mg V/L - VAA LC50 (9 d) = 239.3 mg VAA/L

Mytilus galloprovincialis(mussel), NaVO₃, semi-static, salt water, LC50 (9 d) = 65 mg V/L - VAA LC50 (9 d) = 444.4 mg VAA/L

Long-term toxicity to aquatic invertebrates:

Daphnia magna, semi-static, freshwater, LC50 (23 d) = 2 mg V/L - VAA LC50 (23 d) = 13.7 mg/L

Toxicity to aquatic algae:

freshwater species

Scenedesmus quadricauda, 2,4 -pentanedione, freshwater, static, Toxicity Threshold (24 h) = 2.7 mg/L

marine species

Dunaliella marina, NaVO₃, saltwater, static, EC50 (9 d) = 0.5 mg V/L - VAA EC50 (9 d) = 3.4 mg VAA/L

Asterionella japonica, NaVO₃, saltwater, static, EC50 (9 d) = 2 mg V/L - VAA EC50 (9 d) = 13.7 mg VAA/L

Toxicity to aquatic microorganisms:

Pseudomonas putida, static, freshwater, VCl₃, LC50 (24 h) = 390 mg V³⁺/L - VAA LC50 (24 h) = 2666.4 mg VAA/L

Peranema sp., static, freshwater, VCl₃, LC50 (24 h) = 110 - 120 mg V³⁺/L - VAA LC50 (24 h) = 752.1 - 820.4 mg VAA/L

Pseudomonas putida, static, freshwater, VCl₄, LC50 (24 h) = 230 - 250 mg V⁴⁺/L - VAA LC50 (24 h) = 1572.5 - 1709.2 mg VAA/L

Peranema sp., static, freshwater, VCl₄, LC50 (24 h) = 160 - 170 mg V⁴⁺/L - VAA LC50 (24 h) = 1039.9 - 1162.3 mg VAA/L

Pseudomonas putida, NaVO₃, static, freshwater, LC50 (24 h) = 180 - 200 mg V⁵⁺/L - VAA LC50 (24 h) = 1230.6 - 1367.4 mg VAA/L

Paranema sp., NaVO₃static, freshwater, LC50 (24 h) = 160 - 200 mg V⁵⁺/L - VAA LC50 (24 h) = 1093.9 - 1367.4 mg VAA/L

Pseudomonas putida, 2,4 -pentanedione, static, freshwater, Toxicity Threshold (24 h) = 67 mg/L

Entosyphon sulcatum, 2,4 -pentanedione, static, freshwater, Toxicity Threshold (24 h) = 11 mg/L