Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Freezing point of sea water
Name: ken levine
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1999

I am trying to find the freezing point of sea water. Can I get some help here? It's my first time trying this feature.

The freezing point of seawater depends upon it's salinity, which is the amount of salt that it contains. Open ocean seawater has a salinity of about 35 (no units are used for salinity anymore, although you may see it called o/oo which means parts per thousand or psu, which means practical salinity units. Neither usage is now considered correct). Anyway, fresh water freezes at 0 degrees Celsius and 35 water freezes at about -2 degrees C. The decrease is linear so that water with a salinity of 17 freezes at about -1 degree C.


Click here to return to the General Topics Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (, or at Argonne's Educational Programs

Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory