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UN identification number

UN2677: Rubidium hydroxide solution

UN2677 appears 2 times in the Hazardous Materials Table (49 CFR §172.101). Hazard class 8, packing group II, III.

ID numberUN2677
Hazard class8
Packing groupII, III
Label codes8

All §172.101 entries for UN2677

Proper shipping nameClassPGLabels
Rubidium hydroxide solution8II8
Rubidium hydroxide solution8III8

Open any entry for packaging sections, special provisions, air limits and vessel stowage.

What it means

8
Class 8 — Corrosive. Materials that destroy skin tissue or corrode steel or aluminum.

Packing group ranks danger within the class: PG II = medium danger; PG III = minor danger.

Label codes (column 6): 8 → Corrosive label.

UN numbers are recognized for international and domestic transport.

Example basic description

UN2677, Rubidium hydroxide solution, 8, PG II

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

  1. Match the name. Compare your SDS Section 14 to the proper shipping names above and pick the row with your packing group.
  2. Read the special provisions on the entry page (§172.102) — they can add limits or exceptions.
  3. Check packaging — the entry page lists the Part 173 sections for exceptions, non-bulk and bulk.
  4. Labels & placards. Placarding depends on class and quantity — see Table 1 vs Table 2.
  5. Emergency response. Find the response guide for UN2677 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN2677

What is UN2677?

UN2677 is the identification number for Rubidium hydroxide solution in the DOT Hazardous Materials Table (49 CFR §172.101).

What hazard class is UN2677?

UN2677 is listed under hazard class 8 (corrosive).

What packing group is UN2677?

Packing group for UN2677: II, III. Where several rows exist, the packing group that fits your material decides which row applies.

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Source: Hazardous Materials Table (49 CFR §172.101), eCFR.gov — current as of Oct 23, 2026. View the official table. Reference only — verify current requirements before shipping.