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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Link to relevant study record(s)

Description of key information

Henry law constant = 2.66E-008 Pa-m3/mole

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0
at the temperature of:
25 °C

Additional information

Henry's Law Constant characterizes the equilibrium of dilute concentrations of volatile, soluble substances between the gas and liquid phases. The aromatic sulphonic salts are not volatile and therefore a Henry's Law Constant is not feasible or relevant. An indicative value to complete the Chemical safety assessment has been calculated with EPIWIN 4.00 on the component hydroxybenzene sulphonic acid sodium salt:

Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:

Bond Method :  2.63E-013 atm-m3/mole ( 2.66E-008 Pa-m3/mole)

Group Method:  Incomplete

For Henry LC Comparison Purposes:

User-Entered Henry LC: not entered

Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:

HLC: 1.247E-019 atm-m3/mole (1.263E-014 Pa-m3/mole)

VP:  4.83E-013 mm Hg (source: MPBPVP)

WS:  1E+006 mg/L (source: WSKOWWIN)