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UN identification number

UN1702: 1,1,2,2-Tetrachloroethane

UN1702 appears 1 time in the Hazardous Materials Table (49 CFR §172.101). Hazard class 6.1, packing group II.

ID numberUN1702
Hazard class6.1
Packing groupII
Label codes6.1

All §172.101 entries for UN1702

Proper shipping nameClassPGLabels
1,1,2,2-Tetrachloroethane6.1II6.1

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

What it means

6.1
Class 6.1 — Poisonous (toxic) material. Materials, other than gases, that are toxic to humans if swallowed, inhaled, or absorbed through skin.

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

Label codes (column 6): 6.1 → Poison / Toxic label.

UN numbers are recognized for international and domestic transport.

Reportable quantity (RQ)

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

UN1702, 1,1,2,2-Tetrachloroethane, 6.1, 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 UN1702 in the current PHMSA Emergency Response Guidebook.
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Common questions about UN1702

What is UN1702?

UN1702 is the identification number for 1,1,2,2-Tetrachloroethane in the DOT Hazardous Materials Table (49 CFR §172.101).

What hazard class is UN1702?

UN1702 is listed under hazard class 6.1 (poisonous (toxic) material).

What packing group is UN1702?

Packing group for UN1702: II. 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.