DOT 4BW
For DOT 4BW, test or inspection is External visual inspection; interval is at five-year intervals after the first inspection; condition or service qualifier is Alkali metal alloys, liquid, n.o.s., Alkali metal dispersions or Alkaline earth metal dispersions, Potassium, Potassium Sodium alloys and Sodium that are commercially free of corroding components; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06.
- Container specification
- DOT 4BW verified
- Test or inspection
- External visual inspection our reading
- Interval
- at five-year intervals after the first inspection verified
- Condition or service qualifier
- Alkali metal alloys, liquid, n.o.s., Alkali metal dispersions or Alkaline earth metal dispersions, Potassium, Potassium Sodium alloys and Sodium that are commercially free of corroding components verified
- Regulation section
- 49 CFR § 180.209 verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
DOT 4BW | Alkali metal alloys, liquid , <https://www.law.cornell.edu/definitions/index.php?width=840&height=800&iframe=true&def_id=ce9675606a240905d07508526a234d2a&term_occur=999&term_src=Title:49:Subtitle:B:Chapter:I:Subchapter:C:Part:180:Subpart:C:180.209> n.o.s ., Alkali metal dispersions or Alkaline earth metal dispersions, Potassium , Potassium Sodium alloys and Sodium that are commercially free of corroding components.
— law.cornell.edu, retrieved 2026-08-06
Source
- law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.209