r/hazmat is a subreddit with 4k members. The most common kinds of discussions are self-promotion and advice requests, and the community frequently discusses hazmat, weekly advertising and self promotion thread, chemicals, training, and advertising.
Hazardous Materials from product creation to end of life. Emergency Responders, Contractors, and Industrial partners welcome!
Popular Themes in r/hazmat
#1
Self-Promotion
: "Weekly Advertising and Self-Promotion Thread"
14 posts
#2
Advice Requests
: "What makes a good hazmat transport route? Looking for insights"
4 posts
#3
Pain & Anger
: "My center supervisor tried to make me audit hazmat packages under his credentials while he wasn't even present at the center. Is there any action that can be taken?"
1 post
#4
Opportunities
: "Fuel Transportation"
1 post
Popular Topics in r/hazmat
#1
Hazmat
: "Where can I attend a Hazmat Tech class? I'm in the PNW"
90 posts
#2
Weekly Advertising And Self Promotion Thread
: "Weekly Advertising and Self-Promotion Thread"
31 posts
#3
Chemicals
23 posts
#4
Training
: "Post your in-house Training videos!"
21 posts
#5
Advertising
: "Weekly Advertising and Self-Promotion Thread"
17 posts
#6
Emergency
11 posts
#7
Weekly
8 posts
#8
Thread
8 posts
#9
Regulations
7 posts
#10
Spill
6 posts
Flair Used in r/hazmat
#1
MOD POST
: "Weekly Advertising and Self-Promotion Thread"
44 posts
#2
General Discussion
: "Is one of the tanks mislabeled or am I missing something?"
38 posts
#3
Questions
: "Mercury"
33 posts
#4
Training/Tactics/Education
: "Fentanyl Cleanup?"
31 posts
#5
News
: "HCl spill on I-70"
10 posts
#6
Scenarios
: "Does anybody have an idea of what could have happened to the poor fella on the truck? I'm assuming he's dead but what happens when you get a nitric acid shower?"
9 posts
#7
Software and Tech
: "HCN Monitor"
4 posts
#8
MEME
: "I like to think this is how hazmat operations are performed"
3 posts
#9
Tools/Equipment/PPE
: "Can you use a 6 gas meter on a solid?"
3 posts
#10
Employment/Career
: "Career choice questions"
3 posts
Member Growth in r/hazmat
Yearly
+841 members(26.0%)
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Last updated: August 25, 2026