Registration Dossier
Registration Dossier
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EC number: 270-185-2 | CAS number: 68412-38-4 This substance is identified in the Colour Index by Colour Index Constitution Number, C.I. 77899.
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
Sediment (freshwater)
- Hazard assessment conclusion:
- no hazard identified
Sediment (marine water)
- Hazard assessment conclusion:
- no hazard identified
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The poorly soluble substance manganese antimony titanium buff rutile is evaluated by comparing the dissolved metal ion levels resulting from the transformation/dissolution test after 7 and 28 days at a loading rate of 1 mg/L with the lowest acute and chronic ecotoxicity reference values (ERVs) as determined for the (soluble) metal ions. The ERVs are based on the lowest EC50/LC50 and NOEC/EC10 values for algae, invertebrates and fish, respectively. Acute and chronic ERVs were obtained from the Metals classification tool (MeClas) database as follows: The acute ERVs of antimony (12.1 mg Sb/L), manganese (3.2 mg Mn/L) and titanium ions (> 100 mg/L) are above 1 mg/L and thus a concern for short-term (acute) toxicity was not identified (no classification). According to ECHA Guidance on the Application of the CLP Criteria (Version 5.0, July 2017), “Where the acute ERV for the metal ions of concern is greater than 1 mg/L the metals need not be considered further in the classification scheme for acute hazard.” Due to the lack of an acute aquatic hazard potential for soluble antimony, manganese and titanium ions and the fact that the dissolved metal concentrations measured in the T/D test after 7 days at pH 6 and 8, remained below the LOD of 0.5 µg/L (antimony and titanium) or LOQ of 10 µg (manganese), it can be concluded that the substance manganese antimony titanium buff rutile is not sufficiently soluble to cause short-term toxicity at the level of the acute ERVs (expressed as EC50/LC50).
Regarding long-term toxicity, dissolved manganese ion concentrations, measured after 28 days T/D test at pH 6 and 8, remained below the LOQ of 10 µg Mn/L and thus well below the lowest long-term ERV for manganese (550 µg Mn/L). The chronic ERVs of antimony (1.13 mg Sb/L) and titanium ions (> 100 mg/L) are above 1 mg/L, and a concern for long-term (chronic) toxicity of antimony and titanium ions was not identified (no classification), respectively. According to ECHA Guidance on the Application of the CLP Criteria (Version 5.0, July 2017), ”Where the chronic ERV for the metal ions of concern corrected for the molecular weight of the compound (further called as chronic ERV compound) is greater than 1 mg/L, the metal compounds need not to be considered further in the classification scheme for long-term hazard.” Furthermore, dissolved antimony and titanium concentrations remained below the LOD of 0.5 µg/L after 28 days T/D test at pH 6 and 8. Due to the fact that the dissolved manganese ion concentrations, measured after 28 days T/D test at pH 6 and 8, remained below the LOQ of 10 µg Mn/L and thus well below the lowest long-term ERV for manganese (550 µg Mn/L) and the lack of an chronic aquatic hazard potential for antimony and titanium ions, it can be concluded that the substance manganese antimony titanium buff rutile is not sufficiently soluble to cause long-term toxicity at the level of the chronic ERVs (expressed as NOEC/EC10).
In accordance with Figure IV.4 “Classification strategy for determining acute aquatic hazard for metal compounds” and Figure IV.5 „Classification strategy for determining long-term aquatic hazard for metal compounds “of ECHA Guidance on the Application of the CLP Criteria (Version 5.0, July 2017) and section 4.1.2.10.2. of Regulation (EC) No 1272/2008, the substance manganese antimony titanium buff rutile is poorly soluble and does not meet classification criteria for acute (short-term) and chronic (long-term) aquatic hazard.
In sum, the substance manganese antimony titanium buff rutile is poorly soluble and does not meet classification criteria of Regulation (EC) No 1272/2008 for acute (short-term) and chronic (long-term) aquatic hazard.
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