Can I use this to dehydrate ethanol?

I use it for this purpose as well. Common store purchased 151 proof grain alcohol can be very pure with this. I do 2 absorption and separations to get anhydrous or nearly anhydrous ethanol A plain coffee filter or filter paper removes most of the dust/cloudiness. The rest easily settles out over a few days and the liquid can be separated from it.

What is the regeneration temperature and time for these?

Molecular sieves are definitely not a single-use material. You could do that but you're "doing it wrong." There are numerous recommendations for drying/reactivating them. Try one or more until you find one that works for you.

Would this work for oxygen concentration? (Removing N2 from O2?)

Lithium zeolite and argon zeolite are the 2 most specific types for oxygen concentration. Lithium is the most effective, but also more costly.

At what temperature do these molecular sieves regenerate?

I regen at 250 to 300 1 hr with heated air the dewpiont less then 10% other people have deferential results best to keep air moving without burning if you burn the sieves that will be less effective to absorb water molecule if you live in dry climate it takes less energy humidity plays big factor you have to experiment in your area

Hfs R Molecular Sieve Zeolite 3a 8x12m 500g

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Description

💧 Stay dry, stay ahead — the ultimate molecular sieve for pros who demand precision.

VERSATILE APPLICATION - Perfect for gas drying, CO2 capture, and preventing cold tower issues
INDUSTRIAL GRADE PURITY - 98% size qualification with minimal attrition for consistent performance
ENERGY SMART REGENERATION - Low regeneration temperature saves energy and extends lifespan
SUPERIOR MOISTURE CONTROL - Absorbs over 19% water by weight at 25°C to keep your systems dry
PRECISION ENGINEERED BEADS - Uniform 1.6-2.5 mm size ensures optimal adsorption efficiency

HFS Molecular Sieve Zeolite 3A (8x12 mesh, 500g) is a high-performance aluminosilicate desiccant designed for industrial gas drying and purification. With a bulk density of ≥0.70 g/ml and water adsorption capacity exceeding 19 wt% at 25°C, it efficiently removes moisture and CO2, preventing cold tower phenomena in air separation units. Its durable bead size (1.6-2.5 mm) and low attrition rate ensure long service life and easy regeneration at low temperatures, making it a must-have for professionals seeking reliable, energy-efficient moisture control.

Reviews

A**R

It works as described!

Product came vacuum sealed in an aluminum foil package inside a yellow padded envelope which was sufficient for the purpose. The Molecular Sieve does an excellent job of removing water from Ethanol and are very easy to reconstitute for reuse by simply rinsing in warm water then bake dry at 200° for about 30 minutes spread out on cookie sheet and its ready to reuse.

26.06.2018

G**E

A 3D Printer NECESSITY

This is the best thing you can get for drying 3D printer filament, hands down. I've used maybe 100g of it so far. Humidity has stayed near zero for about 3 months. This jar is a lifetime's worth. If you're on the edge, DO IT.

31.07.2025

B**E

Great Value

A must have in any lab, great for drying solvents

25.11.2025

D**N

Just need a resealable package

Good product. It would however be nice to have a resealable package since they are reusable.

5.05.2021

S**C

Don't leave in a solvent

Slightly dissolves in acetone. Not ideal, since this is what I'm trying to dehydrate

17.09.2020

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