When is a Class 8 Corrosive Material Not Corrosive?

By: Joe McCarthy, Lab Service Manager/Senior Regulatory Affairs Specialist, email

When it is only corrosive to one of aluminum or steel?

Imagine not having to ship your product as a Hazardous Material. Often overlooked in the Hazardous Materials Regulations are the Exceptions for Class 8 (Corrosive Materials) 49CFR173.154.

Under 49CFR173.154(d) if the material is not included in any other hazard class, is not a hazardous waste, is not a marine pollutant, is not corrosive to skin, and is corrosive to only one of aluminum or steel but not both, then it exempt from the Hazardous Materials Regulations under the following conditions:

1) If corrosive only to Aluminum, when transported by motor vehicle or rail car in a packaging constructed of materials that will not react dangerously with or be degraded by the corrosive material

2) If corrosive only to Steel, when transported by motor vehicle or rail car in a bulk packaging constructed of materials that will not react dangerously with or be degraded by the corrosive material.

If you have included a material in Class 8 by weight-of-evidence due to metals corrosion alone, it may be worth your while to test and confirm the corrosion to both Aluminum and Steel via UN TDG Test C.1 – Corrosion to metals.

Learn more about Dell Tech’s chemical lab testing services, including Corrosion to Metals Testing.

 


Dell Tech has provided professional, confidential consulting services to the specialty chemical 

industry in Canada, the USA, Europe, and Asia for the last 40 years.

SHARE:

Recent Posts

image

Clean Pets, Clear Rules: Navigating U.S. Regulations for Animal Grooming Products 

Have you ever picked up a pet shampoo or grooming spray in a U.S. store and wondered: what regulations does this actually fall under? More importantly—how do you know it’s safe for both pets…
image

NHP Product Licence Suspension and Cancellation

While most companies focus heavily on obtaining product licences, fewer fully understand what can trigger a suspension or cancellation and what follows. This is why attention to post-market Natural Health Product…
image

Food Contact Sanitizer Biocide Canada: Now Regulated

In June 2025 the new Biocides Regulations came into force. Under these new regulations, food-contact sanitizers are now regulated as biocides and must undergo a pre-market assessment and have a drug identification…

Have Questions About Regulatory Compliance?

If you’re unsure what your next steps should be, check our frequently asked questions page or contact us today.