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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Density

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
relative density
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
according to guideline
Guideline:
other: DIN 51 757
GLP compliance:
not specified
Type of method:
buoyancy method
Specific details on test material used for the study:
- Name of test material (as cited in study report): sodium N-methyltaurinate
- Substance type: aqueous solution
- Physical state: liquid
Type:
relative density
Density:
1.206 g/cm³
Temp.:
20 °C
Remarks on result:
other: 40 % aqueous solution
Type:
relative density
Density:
1.232 g/cm³
Temp.:
20 °C
Remarks on result:
other: 45 % aqueous solution
Type:
relative density
Density:
1.263 g/cm³
Temp.:
20 °C
Remarks on result:
other: 50 % aqueous solution
Type:
relative density
Density:
1.29 g/cm³
Temp.:
20 °C
Remarks on result:
other: 55 % aqueous solution
Type:
relative density
Density:
1.34 g/cm³
Temp.:
20 °C
Remarks on result:
other: 62 % aqueous solution

Concentration (%)  Relative density (g/cm3)
 40 1.206
 45 1.232
 50  1.263
 55  1.29
 62  1.34
Conclusions:
The relative density of the 40 % aqueous solution is 1.206 g/cm³ measured at 20 °C increasing with increasing concentration up to 1.34 g/cm³ for the 62 % aqueous solution.
Executive summary:

The relative density of the aqueous solution depends on concentration and temperature. The relative density is positively related to concentration of sodium N-methyltaurinate, while relative density is negatively related to temperature. The relative density of the typically manufactured concentration of 40 % aqueous solution is 1.206 g/cm³ measured at 20 °C and for the 62% aqueous solution 1.34 g/cm³. The substance is manufactured and used as aqueous solution. The relative density of the 40 % aqueous solution provides a good measure. The major issue of manufacturing the 62 % solution is due to decrease the transport tonnage.

Description of key information

The density of the 40 % aqueous solution is 1.206 g/cm³ measured at 20 °C increasing with increasing concentration up to 1.34 g/cm³ for the 62 % aqueous solution.

Key value for chemical safety assessment

Additional information

The density of the 40 % aqueous solution is 1.206 g/cm³ and of the 62 % solution 1.34 g/cm³ measured at 20 °C according to DIN 51 757. Additionally, other studies have shown that the density of sodium N-methyltaurinate is 1.21 g/cm³.