Standards and moisture (1 Viewer)

[wind]

What's the right name given to the property of standards that don't absorb, react or change weight due to moisture in the air?

I've heard a couple like non-anhydrous, non-hydroscopic and hydrolytically stable?

 

[randhi]

aren't they the properties of primary solutions

 

[wind]

I suppose you could say that, but more specifically about the substance being dissolved.

For example, sodium carbonate and oxalic acid are both:
pure
stable
un-affected by moisture (I'm looking for this scientific term lol)
un-affected by air
highly soluble in water

 

[L45er]

hydrophilic = water loving
hydrophobic = water hating
anhydrous = literally "without water"

 

[Shards]

maybe you're looking for the word hygroscopic?

 

[Shards]

as in, not hygroscopic

 

[eth]

Just say that a primary standard should be made with a compound which doesn't react with ambient|airbourne moisture eg. Sodium carbonate or sodium hydrogen carbonate