What is in Natural Chemistry Metal Free?

[C3Cl3N3O3]

So I'm in the habit of checking MSDS sheets now, thanks to the TFP. However in one case, it has me more confused. Natural Chemistry Metal Free shows 1% citric acid. What is the other 99%? I'm trying to determine if this is a HEDP sequestrant. They claim it is phosphate free, so that rules out phosphonic acid.

https://media.nat.cm/filer_public/73/3a/733ae588-bfea-4353-b5af-aa960d345950/metal_free_-_english_sds_-_jul14.pdf

I have a bottle of this left over and would like to use it up this week.

 

[YippeeSkippy]

Do you have metal stains in your pool?

From what I can tell it is citric acid and if you use this you may be dealing with it eating up your chlorine for a while until it is gone. It claims to be a chelating agent which I interpret as a remover unlike a sequestrant which doesn't remove the metals just envelopes them in the water. How it works to remove them entirely I am curious...?

Just found this in the stacks- Am I reading this right? Natural Chemistry Metal Free.

 

[C3Cl3N3O3]

Yes I am working through an issue with stains. So I don't think the Metal Free is just citric acid, at 1% it would be the worst product ever. They have a Stain Free product which is 100% citric acid. I have 3 lbs of that as well, and they are designed to work together.

https://media.nat.cm/filer_public/3...53a1a1967/stainfree_-_english_sds_-_oct14.pdf

 

[C3Cl3N3O3]

Soooo I guess the MSDS only reveals the contents which might be dangerous. Active but harmless ingredients aren't listed, so you are back to guessing about those.