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Environmental fate & pathways

Henry's Law constant

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Description of key information

Henry’s Law constant was estimated for CAS 127-52-6, the main constituent of “CAS 127-52-6 trihydrate”, using the HENRYWIN v.3.20 module of EPI Suite™ v.4.00. HENRYWIN™ calculates the Henry’s Law constant (air/water partition coefficient) using both the group contribution and the bond contribution methods. The Henry’s Law constant is 0.791 Pa m3/mole, which corresponds to 7.81 x 10-6 (i.e., 0.00000781) atm m3/mole or 3.19 x 10-4 (unitless). Hence, CAS 127-52-6 is considered slightly volatile from water at ambient temperature.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.791

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