The US Pipeline and Hazardous Materials Safety Administration (PHMSA) has confirmed that federal hazardous materials regulations do not impose two specific quantity limits queried by a chemical services company: a 40,000 lb (18,144 kg) maximum for certain organic peroxide shipments in portable tanks, and a 925-gallon (3,501-litre) cap on residual caustic soda.
In an interpretation dated 6 October 2026, issued as reference 26-0062, the agency sai…
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