Who This Checklist Is For

If you’re an office admin or procurement person who suddenly got handed the chemical ordering job (I know that feeling), this is for you. Or if you’ve been doing it a while but want to make sure you haven’t missed anything in 2025. I manage about $80k annually across 8 vendors for our 150‑person company, and I’ve learned a few things the hard way.

Here are the 6 steps I now follow for every chemical purchase — from small bags of pigments to drums of caustic soda. It’s not fancy, but it’s worked for me.

Step 1: Get Specific About What You Actually Need

Sounds obvious, right? But I’ve messed this up more than once. You need more than just a product name. Write down:

  • CAS number – for caustic soda it’s 1310‑73‑2, for example.
  • Concentration / purity – “caustic soda 50% solution” is different from beads.
  • Form – liquid, flake, pellet, powder? The handling changes everything.
  • Packaging – drums, totes, bags? Our warehouse can only accept 55‑gallon drums.

If you’re ordering polymers, you’ll also need to know what the small repeating units are (the monomers) — that tells you whether you’re getting polyethylene, polypropylene, or something else. I once ordered “resin” without checking, and it turned out to be the wrong grade for our molding line.

And pyocyanin pigment? That’s a specialty bacterial pigment used in some labs. Unless you know the exact strain and extraction method, you’re better off getting the SDS first. Don’t guess.

Step 2: Always Start with the SDS (Safety Data Sheet)

Before any PO goes out, I pull the SDS. For INEOS products, you can find their SDS on the INEOS Olefins & Polymers USA portal — they keep them updated. Here’s what I check:

  • Hazard classification – corrosive? flammable? toxic?
  • Neutralization instructions – for caustic soda (sodium hydroxide), the standard method is to dilute slowly with water, then neutralize with a weak acid like citric or acetic acid. Never add water to caustic — it generates heat violently. The SDS will have the exact procedure.
  • Storage requirements – temp range, incompatible materials.
  • PPE – we had to buy new gloves after an update listed different material compatibility.

“I learned this the hard way in 2023. We ordered caustic soda from a new vendor, and the delivery driver didn’t have the proper SDS available. Our safety officer flagged it. Now I verify SDS availability before placing the order.”

Also, SDS can go out of date. I check the revision date — anything older than 3 years gets flagged for re‑download.

Step 3: Evaluate the Supplier — Beyond Price

Price matters, but so does reliability. Here’s my mini‑checklist for chemical suppliers:

  • Are they a manufacturer or distributor? INEOS, for example, is a manufacturer — you get direct technical support. Distributors may offer faster delivery for smaller quantities.
  • Do they have an online portal? In 2025, if I can’t view past orders, check stock, and download invoices online, it’s a red flag. Our 2024 vendor consolidation project saved accounting 6 hours a month just by moving everyone to digital.
  • What’s their lead time? I had a supplier quote “2‑3 weeks” but then told me “out of stock” after 10 days. Now I ask for a stock confirmation in writing before purchase order.
  • Do they handle hazmat shipping? Caustic soda and many chemicals are classified as hazardous materials — you need a carrier licensed for that. Small suppliers sometimes skip this.

I don’t have hard data on how many suppliers mess up hazmat shipping, but anecdotally I’d say about 1 in 5 have given us a freight quote that didn’t include the hazmat surcharge. Always ask upfront.

Step 4: Verify Compliance — Regulations Change

What was best practice in 2020 may not apply in 2025. Check the current EPA, OSHA, and local fire codes for storage limits and reporting requirements. For example, many states now require electronic SDS accessibility for all workers, not just a binder in the manager’s office.

If you’re importing chemicals from INEOS Olefins & Polymers USA or any international supplier, also verify customs documentation — we once got held up because the CN code (Harmonized System) was wrong.

One thing I’ve started doing: keep a compliance log with dates of when we last reviewed each chemical’s regulations. It’s saved us during audits.

Step 5: Place the Order — With Clear Communication

When you’re ready to order, write the PO with as much detail as possible:

  • Product name + CAS + grade + quantity + packaging
  • Required delivery date and location
  • Shipping terms (FOB? Delivered?)
  • Any special handling — e.g., “keep below 25°C” for certain polymers
  • Request the SDS and certificate of analysis (CoA) with the shipment

I also include a note: “Please confirm receipt of this PO and provide estimated ship date within 2 business days.” That tiny step has cut our misunderstandings by more than half.

Trust me on this one: a written confirmation of price and lead time before you hit “send” saves headaches later.

Step 6: Track Receipt and Do a Quick QC

When the shipment arrives:

  • Check the packing slip against the PO — count drums, check labels.
  • Inspect for damage, especially if it’s a corrosive like caustic soda — look for leaks or dents.
  • Verify the lot number matches the CoA. (I learned that one after a batch of resin had the wrong viscosity.)
  • File the SDS and CoA in your electronic system immediately — don’t wait until someone asks for it.

“I wish I’d tracked CoA more carefully from the start. In 2024, we had a quality issue with a polymer and couldn’t prove it wasn’t our storage problem because we’d lost the CoA. Now I keep a folder per vendor per chemical.”

Common Pitfalls to Avoid

  • Assuming “standard” means the same thing: We once ordered “caustic soda beads” and received “caustic soda flake.” Both are NaOH, but flake dissolves slower — it caused a delay in production.
  • Not checking neutralization procedures before an incident: You don’t want to be Googling “how do you neutralize caustic soda” while a spill is happening. Print the SDS emergency section and put it near the storage area.
  • Over‑reliance on one supplier: Even big names like INEOS can have production outages. Keep an approved backup.
  • Ignoring the small stuff: Pyocyanin pigment shipments may require different handling than you expect — some are classified as biological materials. Always verify.

Pricing and regulations change fast (this checklist reflects practices as of early 2025). Always verify current SDS and local requirements before ordering. If you have a go‑to step I missed, drop it in a comment — I’m still learning too.