4-Chlororesorcinol (CAS 95-88-5): A Practical Buyer's Guide for Chemical Procurement

4-Chlororesorcinol

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The Wrong Purity Spec for the Right Application

Most alcohols and glycols are available in multiple purity grades. The problem isn’t usually finding the compound — it’s matching the purity grade to the application.
 
A pharmaceutical excipient buyer in Japan ordered 4-Chlororesorcinol (CAS 95-88-5) from a Chinese supplier quoting “industrial grade.” The price was attractive. The purity was 99%. What the quote didn’t include was that industrial grade had no specification for endotoxin levels, microbial contamination, or heavy metals — all three of which were in their excipient specification.
 
Pharmaceutical-grade reagents cost more. They’re not interchangeable with technical-grade, even at the same purity percentage.

Quality Parameters by Application

For technical/industrial use: GC purity, water content, color (APHA), and density.
 
For pharmaceutical excipient or API synthesis use: add USP/EP/JP grade specification, endotoxin limits, heavy metals specification, residual solvents per ICH Q3C, and microbiological testing.
 
For cosmetic use: cosmetic-grade certification, skin irritation data, and often natural origin documentation.
 
4-Chlororesorcinol is available in all three tiers from qualified manufacturers. Make sure you’re buying the right one.

Storage Considerations

Most alcohols are hygroscopic — they absorb water from the atmosphere. Open drums and reseal properly. If you’re using it in a water-sensitive synthesis, test the water content on each container before use, not just on the original CoA.
 
Flash point matters for storage classification and transport. Check it in the SDS and make sure your warehouse storage area is classified accordingly.
4-Chlororesorcinol

sdlookchem Supply

Shandong Lookchemical supplies 4-Chlororesorcinol in technical and higher-grade specifications. QC testing per batch covers GC purity, water content, APHA color, and density. Documentation includes batch CoA and GHS-compliant SDS.
 
MOQ 1 kg. Bulk orders (25 kg drums, IBC totes) with volume pricing. Lead time 5-10 business days for standard orders.
 

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