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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The registration item is a white powder at environmental conditions. An overview of its physico-chemical properties is given in the table below:

Overview of physico-chemical properties of Guanidine carbonate




Melting point

EU method A.1

231 °C

Relative density

EU method A.3

1.29 at 20 °C

Water solubility

EU method A.6

450 g/l at 22 ± 2 °C

Partition coefficient

EU method A.8

Log Pow -1.43 (sd: 0.31) at 22 ± 2 °C


EU method A.10

Not highly flammable


EU method A.16

No self-ignition below the melting point

Oxidising properties

EU method A.17

No oxidising properties (expert statement)

Dissociation constant

OECD TG 112 & Weight of Evidence

pKa 12.5, dissociated in environment and body fluids