Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 268-612-2 | CAS number: 68131-30-6 A solution obtained by dissolving the chemicals recovered in the alkaline pulping process in water.
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Green liquor is an alkaline aqueous non flammable inorganic UVCB substance (75% water at minimum). Some of the identified uses of green liquor require altering the pH of green liquor to acidic. Green liquor has dissolved sulfide/hydrogen sulfide (S2-/HS-) as a constituent. In contact with acids, HS is turned to flammable and volatile hydrogen sulfide (H2S).
Key value for chemical safety assessment
- Flammability:
- non flammable
Additional information
Green liquor is an alkaline aqueous non flammable inorganic UVCB substance (75% water at minimum). Based on structural considerations, GL is not flammable in the chemical state at which it is manufactured and marketed and under the test conditions described in Test Guidelines A.9 A.10-A.13 of EC Regulation No 440/2008.
For liquids the primary value for ease of ignition is the flash point (A.9). The flash-point is the lowest temperature, corrected to a pressure of 101,325 kPa, at which a liquid evolves vapours, under the conditions defined in the test method, in such an amount that a flammable vapour/air mixture is produced in the test vessel.
At the chemical state GL is manufactured and marketed, no volatile flammable constituents are evolved from the substance.
Some of the identified uses of green liquor require altering the pH of green liquor to acidic. Green liquor has dissolved sulfide/hydrogen sulfide (S2-/HS-) as a constituent. In contact with acids, HS is turned to flammable and volatile hydrogen sulfide (H2S).
Justification for classification or non-classification
Green liquor is an alkaline aqueous non flammable inorganic UVCB substance (75% water at minimum). Based on structural considerations, GL is not flammable in the chemical state at which it is manufactured and marketed and under the test conditions described in Test Guidelines A.9 A.10-A.13 of EC Regulation No 440/2008. The substance is not flammable itself and no classification is required.
According to REACH Annex I (point 2.4), for every physicochemical hazard assessment property, the assessment shall entail an evaluation of the inherent capacity of the substance to cause the effect resulting from the manufacture and identified uses.
Some of the identified uses of green liquor require altering the pH of green liquor to acidic. Green liquor has dissolved sulfide/hydrogen sulfide (S2-/HS-) as a constituent. In contact with acids, HS is turned to flammable and volatile hydrogen sulfide (H2S).
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
