Freezing Star San concentrate

[MistaCitra]

good afternoon fellas

Has any one had there Star San concentrate freeze? I ordered some but it resides on the truck until Tuesday. Temps will be 0 deg F or lower the next couple days and I’m concerned about the Star San rupturing or becoming un-useful upon receiving.

Cheers!

 

[opercularia]

MSDS lists it as 50% Phosphoric Acid. Should freeze at about -40 F (or C).

Edit: Just looked at MSDS again - it appears to be 50% of 75% phosphoric acid, so about 35% pure acid. This should freeze at less than 14 F (-10 C).

 

[ESBrewer]

There's nothing that could happen for your StarSan during the transit as far as the bottle remains intact. If you have some yeast in transit, the temperature could be more critical.

 

[masskrug]

Starsan is far more dense that water. It will not freeze.

 

[MistaCitra]

Well everyone starsan doesn’t freeze... well it does but at an extremely low temperature. When I received and opened the package I noticed some slight slush in the solution. The temperature while sitting on the truck at fedex was below zero on the day of delivery it was -10deg F. It sat in the truck at fedex facility for a total of 3 Days. Thanks everyone for the replies, cheers.