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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Water solubility

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Administrative data

Link to relevant study record(s)

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Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1999
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to guideline
Guideline:
other: no guideline available (Handbook data)
Remarks on result:
not determinable
Remarks:
Reaction with water is vigorous, and with large amounts of peroxide it may be explosive.
Details on results:
Contact of the peroxide with combustibles and traces of water may cause ignition. Violent explosions on two occasions during attempted preparation of
oxygen were attributed to traces of sodium in the peroxide. The former would liberate hydrogen and ignite the detonable mixture.
Conclusions:
Reaction with water is vigorous, and with large amounts of peroxide it may be explosive. The study must be waived.
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1996
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to guideline
Guideline:
other: no guideline available (Handbook data)
Remarks on result:
other: Freely soluble in water, forming sodium hydroxide and hydrogen peroxide, the latter quickly decomposes into oxygen and water.
Conclusions:
The substance is freely soluble in water, forming sodium hydroxide and hydrogen peroxide, the latter quickly decomposes into oxygen and water.
Endpoint:
water solubility
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Qualifier:
according to guideline
Guideline:
other: no guideline available (Handbook data)
Remarks on result:
not determinable
Remarks:
Reacts with water.
Conclusions:
The water solubility is not determinable as the substance reacts with water.

Description of key information

Daily manipulation of the substance by the producer indicates the production of oxygen and sodium hydroxide. Testing is not required.

For the purpose of the risk assessment, the NaOH solubility is referenced as key value and the REACH dossier value is used (100g/100g H2O at 25°C).

Key value for chemical safety assessment

Water solubility:
1 000 g/L
at the temperature of:
25 °C

Additional information