IPA and Galvanized Steel
IPA and Galvanized Steel
(OP)
I would like to store/dispense Isopropyl Alcohol (99.9% Anhydrous or 99%). The dispensing container that I will be using is made of galvanized steel (Justrite 10018 [Galvanized] Steel Plunger Can). The IPA is for electronics use (removing flux, cleaning PCBs).
According to Justrite (who manufacturers the storage can), they mentioned in the link below that 70% IPA is not recommended to be stored in a galvanized steel can (they recommend stainless steel or polyethylene).
Link
I am assuming this is because 70% IPA contains 30% water which has the potential to rust galvanized steel over time, is this correct?
According to The Dow Chemical Company they mentioned in a document that:
"..Transfer lines may be of carbon steel. For Isopropanol, 91 or 95 percent, stainless steel, galvanized or lined piping should be considered if rusting is to be eliminated."
Would storing 99.9% or 99% IPA in a container made of galvanized steel cause rust or any other issue which would compromise the safety of the container?
Logged
According to Justrite (who manufacturers the storage can), they mentioned in the link below that 70% IPA is not recommended to be stored in a galvanized steel can (they recommend stainless steel or polyethylene).
Link
I am assuming this is because 70% IPA contains 30% water which has the potential to rust galvanized steel over time, is this correct?
According to The Dow Chemical Company they mentioned in a document that:
"..Transfer lines may be of carbon steel. For Isopropanol, 91 or 95 percent, stainless steel, galvanized or lined piping should be considered if rusting is to be eliminated."
Would storing 99.9% or 99% IPA in a container made of galvanized steel cause rust or any other issue which would compromise the safety of the container?
Logged





RE: IPA and Galvanized Steel
RE: IPA and Galvanized Steel
(HDPE bottle with Stainless Steel pump)
http://menda.descoindustries.com/MendaCatalog/Pump...
or this:
(HDPE container with plunger assembly made of Brass and Ryton)
http://justritemfg.com/products/safety-cans-and-co...
The one made by Justrite indicates that the "perforated upper pan serves as a flame arrester". I am not sure if the brass used will be an issue with IPA.
I only need to use small amounts of IPA as this is for hobby electronics at home. My main concern is fire safety. I like the feature of the dispensing pump by Menda has it prevents the main reservoir from getting contaminated.
RE: IPA and Galvanized Steel
I would prefer the Menda.
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P.E. Metallurgy, Plymouth Tube
RE: IPA and Galvanized Steel
RE: IPA and Galvanized Steel
Would it make much of a difference if I go with conductive vs dissipative?
RE: IPA and Galvanized Steel
http://www.charleswater.co.uk/PDF/MendaCompatibility.pdf
For acetone it is the other way around (dissipative has a rating of "good" and conductive a rating of "excellent").
I wonder why that is...
RE: IPA and Galvanized Steel
RE: IPA and Galvanized Steel
Is it because IPA evaporates quickly without leaving any conductive residue the reason why it is used as a solvent for cleaning electronics?
RE: IPA and Galvanized Steel
RE: IPA and Galvanized Steel