Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Additional information

Substance: Matte lead


“Matte lead is a solid, initially formed as a molten metal sulphide phase during the smelting of primary and secondary lead containing materials high in sulphur.”

EC names

EC number/ EINECS No.


Matte lead



Matte, copper-lead



Note: substances pre-registered under the EC numbers 282-356-9 and 305-422-1 were merged as a result of sameness discussions within the relevant SIEFs. They are collectively identified under the name Matte lead and the EC number 305-422-1.

The material is a black, odourless solid (at 20°C and 101.3 kPA) in the form of coarse lumps or chuncks. The density will vary according to the precise composition of the sample. The density of the tested sample was 4.96 and 7.01 g/cm3. The melting point is shown to be > 500°C. Consequently, boiling point and vapour pressure cannot be determined. The water solubility test shows dissolution of metal ions although these results should be used with caution.


There is no evidence of physical hazards in terms of (auto)flammability, explosivity and oxidizing properties.

Studies regarding flash point, partition coefficient, surface tension and particle size distribution do not need to be conducted.

Waivers are in place for all these endpoints.