Are any of these chelants : ethylene glycol, propylene glycol and mineral oil ?
The MSDS does not give this information
How is the best way to find out if a chemical is a chelant
Will these three chemicals affect metal precipitation and ion exchange using purolite s930? The ratio would be lets say 5 gallons ethylene glycol and 2000 gal waterto be treated for heavey metal removeal
None of those are chelants. Ethylene Glycol and Propylene Glycol (anti-freezes) are corrosion inhibitors. Mineral oil is a non-ionic petroleum based product.
For the anti-freezes S930 would not be the choice. Some use one of the following deminerializer configurations:
1. Cation (SAC) and Anion (SBA) resins. 2. Cation (SAC) and Anion (WBA) resins. 3. Mixed Bed DI resin.
If the mineral oil contains metals then those same demin choices could be used, although I know of no one doing that.
Oil in general are detrimental to IX resins. If the resin is coated with oil, the can be ruined. Oil saturated resin must be cleaned to restore proper function.
Oil should be removed before any IX proces.
If IX is used to remove heavy metals without removing other cations and anions, a chelating resin like S930 is reasonable and preferable to any standard resin (eg. SAC). Especially, if the HEAVY metals are in water containing a lot of hardness.
Here is the Wikipedia definition of mineral oil:
Mineral oil or liquid petroleum is a by-product in the distillation of petroleum to produce gasoline and other petroleum based products from crude oil. It is a transparent, colorless oil composed mainly of alkanes (typically 15 to 40 carbons) and cyclic paraffins, related to petroleum jelly (also known as "white petrolatum"). It has a density of around 0.8 g/cm3.[1] Mineral oil is a substance of relatively low value, and it is produced in very large quantities. Mineral oil is available in light and heavy grades, and can often be found in drug stores.
While I'd normally recommend the Merck Index for looking up information on what a chemical is, how it's used, and its properties, to get access to the book you'd need visit a science library (local college/university will have one) or purchase it.
Wikipedia is a surprisingly good source of chemical information on-line. When a substance is a chelate or chelating agent, it will tell you in the description. E.g. the listing on EDTA, a well-known chelate, at http://en.wikipedia.org/wiki/EDTA.
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