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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Depending on the endpoints of IUCLID sections 4 (Physical and chemical properties), 6 (Ecotoxicological information) and 7 (Toxicological information), data are provided either on the reaction mass itself, or on its constituents. In order to compare the physico-chemical profiles of the three substances, their respective physico-chemical data are summarized in the table below:

 

Endpoint

Reaction mass of Dicerium Trisulfide and Dilanthanum Trisulfide

Dicerium Trisulfide

Dilanthanum Trisulfide

Appearance / Physical state / Colour

Orange-red granular solid

Red granular solid

Maroon powder solid

Melting point 

Higher than 400°C

 2060°C

Between 2100 and 2110°C

Boiling point

Waiving (melting point > 300°C)

Waiving (melting point > 300°C)

Waiving (melting point > 300°C)

Relative density 

4.91

4.4562

4.7447

Vapour pressure

Waiving (melting point > 300°C)

Waiving (melting point > 300°C)

Waiving (melting point > 300°C)

Partition coefficient 

Waiving (inorganic substance)

Waiving (inorganic substance)

Waiving (inorganic substance)

Water solubility

< 2.74 µg/l at pH 8.1 and 19.9°C

< 1.79 µg/L at pH 8.2 and 20°C

Insoluble (no quantitative data available)

Surface tension

Waiving (water solubility < 1 mg/L)

Waiving (water solubility < 1 mg/L)

-

Flash point

Waiving (inorganic solid) 

Waiving (inorganic solid)

Waiving (inorganic solid)

Auto Flammability

398°C

335°C

No auto-ignition temperature up to 450°C

Flammability 

Non flammable (weight of evidence approach based on the data available on the two constituents)

Non flammable

Non flammable

Explosiveness

Non explosive (weight of evidence approach based on the data available on the two constituents)

Non explosive

Non explosive

Oxidising properties

Non oxidizing (based on molecular structure)

Non oxidizing (based on molecular structure)

Non oxidizing (based on molecular structure)

 

Additional information