Olin Chemicals FAQ: Caustic Soda, Epoxy Mixing, and PFAS Questions

This started as a set of notes I typed after a rush order for caustic soda almost went wrong because the spec wasn't verified. In my role coordinating chemical supply for industrial customers, I've handled a lot of same-day and next-morning deliveries. Last quarter alone, we processed 47 rush orders with 95% on-time delivery. This FAQ covers the questions I hear most: the Olin catalog, Olin caustic soda, epoxy resin mixing, and PFAS treatment. Everything here is accurate as of Q1 2025, but chemical markets move fast, so verify current specs, COAs, and delivery windows before you commit.

Where can I find the Olin catalog?

The Olin catalog is usually split by product family rather than being one giant list. You'll find chlor alkali products—including Olin caustic soda—plus epoxy resins, vinyl products, MDI, and derivatives. The easiest way to get it is to ask through Olin's sales team or visit olin.com and request the product family data sheets.

The catalog tells you what Olin makes. The certificate of analysis tells you what your specific batch is. I've seen a buyer order Olin caustic soda from a catalog and get a 50% concentration when the production system was designed for 25%. It wasn't Olin's fault. It was a five-minute verification that didn't happen.

Can I order Olin chemicals directly or through a distributor?

Both, depending on the product and the logistics. For high-volume commodity products like Olin caustic soda, you'll usually work with Olin's chlor alkali sales team or an approved distributor, especially if the shipment is by tank truck or rail. For epoxy resins and specialty derivatives, direct technical sales support often makes more sense.

If a vendor says something is Olin but won't provide a COA or lot number, treat that as a red flag. I use the same rule for rush orders: no COA, no dock release.

Can I get Olin caustic soda for a rush order?

Yes, but the premium is real and the margin for paperwork is thin. In March 2024, a plant called 36 hours before a line restart. They needed 50% Olin caustic soda, one drum, and a current COA. Their normal supplier was five days out. Missing that restart meant a $50,000 penalty clause. We found a local distributor with stock, paid the rush premium—roughly 35% on top of the base cost—and had the drum there at 6 a.m. with the paperwork match.

That's the part people skip: the paperwork match. If the PO says 25% and the drum says 50%, no amount of rush logistics helps. When you're triaging a caustic soda order, the first question isn't “how fast?” It's “what exactly does the spec sheet say?”

What should I check before ordering Olin caustic soda?

Check four things before you commit:

• Concentration: 50% and 25% are common, and the spec affects freezing point, dilution, and pump sizing.
• COA date: match the lot number to the product and confirm the test results are current.
• Physical form: drum, tote, rail car, and tank truck all have different temperature and handling requirements.
• Unloading equipment: pump, hose, and connections must be compatible before the truck arrives.

50% caustic soda can freeze around 59°F, so January deliveries need a different plan than July deliveries. I learned that the hard way. Looking back, I should have asked about the pump size before the truck arrived. Instead, I assumed a standard drum pump would work. It didn't, and we lost two hours waiting on a threaded adapter.

5 minutes of verification beats 5 days of correction.

Can ion-exchange resins remove PFAS?

Yes, but the phrase “ion-exchange resins PFAS” is not a single product. Strong-base anion exchange resins in the chloride form are commonly used, and PFAS-selective resins are designed for compounds like PFOA, PFOS, and some short-chain PFAS. The resin has to be matched to your pH, flow rate, background organics, and PFAS profile. If a spec sheet only says “anion exchange resin,” that's not enough information.

According to U.S. EPA (epa.gov), ion exchange is one of the demonstrated treatment technologies for PFAS removal in drinking water and industrial applications—but it has to be designed, operated, and disposed of responsibly.

I'll add an honest correction to my own assumptions. Everything I'd read said granulated activated carbon was the default because it's cheaper up front. In practice, for one industrial water pilot I worked with, PFAS-selective ion-exchange resin gave longer run length and lower overall disposal volume than GAC. But it needed better pretreatment. The point isn't that IX is always better. The point is that a PFAS treatment decision is a piloting project, not a catalog choice.

What is the best mixer for epoxy resin?

The best mixer for epoxy resin is the one that fits the batch size and doesn't put air into the mix. For small batches—one to five gallons—I like a low-speed drill mixer with a closed-paddle design. For 55-gallon drums, use a variable-speed drum mixer and keep the impeller below the liquid line.

Speed matters more than brand. Too fast whips in air and can make the resin gel too quickly. Too slow leaves unmixed streaks and soft spots. If you ask me, a timer is part of the mixer setup. A drill without a timer is just a drill; a drill with a timer is a process.

For Olin epoxy resin products, the mix ratio follows the resin's epoxy equivalent weight and the hardener's amine value. That's not a guess-you-can-do-later ratio. Label the mixing cup, set the timer, and scrape the sides. I've seen more coating failures from poor mixing than from bad resin.

What to use instead of epoxy resin?

Before you replace epoxy, figure out what you need it to do. Adhesion? Chemical resistance? Long working time? Low odor?

Vinylester can handle some chemical environments better than epoxy, but it usually has more shrinkage. Polyurethane gives flexibility and abrasion resistance, but it can be sensitive to moisture during cure. Polyester is economical for casting and molding, but it has less toughness and higher shrinkage. Acrylic systems can be fast and low-odor, but they don't have the same bond strength. None of these are a universal “instead.”

What I'd argue is this: if your reason for switching is that epoxy was hard to mix correctly, switching to another chemistry may just move the risk. The fix is usually a better mixer, a scale, and a repeatable process. And if someone markets an alternative as “green” or “eco-friendly,” ask for the data. Per FTC guidelines (ftc.gov), environmental claims in marketing need substantiation. I don't mean that as a legal threat. I mean it as a buyer's filter.

What do I do if a chemical order is wrong the day before production?

Stop and check, even if it's 4 p.m. on a Friday. If the label says Olin caustic soda but the COA doesn't match the PO, quarantine it. Call your supplier immediately and ask for their fastest corrective process.

In my experience, a wrong order that gets quarantined in ten minutes is almost always recoverable before start-up. The same wrong order sitting on the dock with nobody making a decision is what turns a one-day fix into a three-day delay. Prevention isn't only about checking before you order. It's also about deciding quickly when reality doesn't match what you expected.