UN2225: Benzene sulfonyl chloride
UN2225 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 8, packing group III.
All §172.101 entries for UN2225
| Proper shipping name | Class | PG | Labels |
|---|---|---|---|
| Benzene sulfonyl chloride | 8 | III | 8 |
Open any entry for packaging sections, special provisions, air limits and vessel stowage.
What it means
Packing group ranks danger within the class: PG III = minor danger.
Label codes (column 6): 8 → Corrosive label.
UN numbers are recognized for international and domestic transport.
Reportable quantity (RQ)
- Benzenesulfonyl chloride is listed in Appendix A with an RQ of 100 lb (45.4 kg).
If a single package contains the RQ or more, the material is also a hazardous substance and “RQ” is added to the shipping description. How RQ is measured →
Example basic description
Proper shipping name shown without the table's italic descriptive text. Order per §172.202: ID number, proper shipping name, hazard class, packing group. Example only — add technical names, “RQ”, quantities and other elements your shipment requires.
What to check next
- Match the name. Compare your SDS Section 14 to the proper shipping names above and pick the row with your packing group.
- Read the special provisions on the entry page (§172.102) — they can add limits or exceptions.
- Check packaging — the entry page lists the Part 173 sections for exceptions, non-bulk and bulk.
- Labels & placards. Placarding depends on class and quantity — see Table 1 vs Table 2.
- Emergency response. Find the response guide for UN2225 in the current PHMSA Emergency Response Guidebook.
Get the HazmatTable Field Guide poster pack
8 printable hazmat reference posters — reading a table entry, hazard classes, placards, segregation, shipping papers and more. Free, sent to your inbox.
Common questions about UN2225
What is UN2225?
UN2225 is the identification number for Benzene sulfonyl chloride in the DOT Hazardous Materials Table (49 CFR §172.101).
What hazard class is UN2225?
UN2225 is listed under hazard class 8 (corrosive).
What packing group is UN2225?
Packing group for UN2225: III. Where several rows exist, the packing group that fits your material decides which row applies.