4-Benzoylbiphenyl (CAS 2128-93-0): A Practical Sourcing Guide for Industrial Buyers

4-Benzoylbiphenyl

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The Shipment That Took Three Weeks to Clear

A purchasing manager in Germany — pharmaceutical raw materials — told me last year about a batch of 4-Benzoylbiphenyl that arrived with paperwork showing 98% purity. Everything looked fine on paper. What they found when they tested it in-house was different: a related impurity at 1.2% that the CoA had rolled into the main peak. Minor, technically. But enough to fail their incoming QC threshold.
 
Three weeks of back-and-forth. The supplier wasn’t lying — they were reporting honestly according to their method. The problem was the methods didn’t match.
 
This happens. And it’s fixable, but only if you ask about test methods before you order, not after.

What This Compound Is Actually For

4-Benzoylbiphenyl (CAS 2128-93-0) is used across several industrial segments. The dominant use cases drive the quality expectations.
 
Research-grade applications typically want high purity with full spectral data — NMR, HPLC trace, sometimes GC-MS confirmation. Industrial synthesis applications care more about consistent batch-to-batch specification and packaging that protects stability in transit.
 
The buyers who get into trouble are the ones who order research-grade when they need technical-grade (overpaying) or order technical-grade when they actually need research-grade (getting a headache). Be clear about your application before you quote.

How to Evaluate a Chinese Manufacturer

Price is not the variable to optimize on first. The real question is: does the manufacturer understand your quality requirements, and are they able to consistently produce to that spec?
 
Three things to ask any supplier of 4-Benzoylbiphenyl:
 
First: what’s the test method for purity? HPLC area percent, external standard, which column, which solvent? A supplier who can answer that question clearly is a supplier who actually runs the test.
 
Second: what’s the shelf life under your recommended storage conditions, and what’s the basis for that claim — accelerated stability data, or just convention? There’s a significant difference.
 
Third: can you provide a batch record for the last three production runs? Not every supplier will say yes. But asking tells you a lot about how they operate.
 
If those three questions get vague answers, keep looking.
4-Benzoylbiphenyl

What sdlookchem Offers

Shandong Lookchemical (sdlookchem) manufactures 4-Benzoylbiphenyl with in-house QC at synthesis, workup, and final packaging stages. Testing includes HPLC purity confirmation and NMR identity verification on each commercial batch.
 
Standard documentation: batch-specific CoA, GHS-compliant SDS, and complete export/import paperwork for major markets including the EU, US, and Japan. MOQ is 1 kg; bulk pricing available for orders above 10 kg.
 
Packaging is matched to stability requirements. Compounds sensitive to moisture or air are packed under inert atmosphere. Cold-chain capable for materials that require it.

Regulatory and Shipping Reality

4-Benzoylbiphenyl (CAS 2128-93-0) ships internationally as a chemical under standard IATA/IMDG classifications. Check the GHS classification in the SDS before you import — some markets require pre-notification or specific labeling that you need to arrange on your side.
 
Most experienced buyers have a customs broker who handles this routinely. If you’re doing your first direct import from China, budget extra time for the first shipment — two to three weeks for documentation clearance is normal. After that first clean shipment, reorders move much faster.

Getting a Quote That's Actually Useful

When you contact sdlookchem, don’t just send a generic price request for X kg of 4-Benzoylbiphenyl.” Provide:
Your required purity spec and test method. Your required documentation package. Your destination country and any known import restrictions. Your timeline — when you actually need the material on-site, not just when you’d like to order.
 
A quote that’s based on those four inputs is worth something. A quote that’s just a price per kilogram is just a starting point for a longer conversation.
 

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