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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Cobalt chromite blue green spinel (CAS 68187-11-1) is an inorganic, intense blue-green, odourless powder.

- Melting point > 1000 °C

- relative density: 4.96.

- Particle size distribution: d10 = 1.3 µm, d50 = 2.5 µm, d90 = 4.5 µm

- Dustiness:

total: 5.37 mg/g

MMAD1 = 4.28 µm, GSD = 1.54

MMAD2 = 100 µm, GSD2= 19.22

Fractional deposition in human respiratory tract: Head (ET): 53.5 %, Tracheobronchial (TB): 1.2 %, Pulmonary (PU): 2.7 %

- The transformation/dissolution

Full test 7 days at 1 mg/L and pH 6: <0.5 µg Co/L, <0.5 µg Cr/L, 3.0 µg Al/L and <1 µg Zn/L

Full test 7 days at 1 mg/L and pH 8: <0.5 µg Co/L, <0.5 µg Cr/L, <0.5 µg Al/L and 1.04 µg Zn/L

Full test 28 days at 1 mg/L and pH 6: <0.5 µg Co/L, <0.5 µg Cr/L, 1.9 µg Al/L and <1 µg Zn/L

Full test 28 days at 1 mg/L and pH 8: <0.5 µg Co/L, <0.5 µg Cr/L, <0.5 µg Al/L and 1.36 µg Zn/L

Additional information