UNunnums
1719

UN 1719Caustic alkali liquid, n.o.s.

Proper shipping name: Caustic alkali liquids, n.o.s.

Class 8

Corrosives

Summary

UN 1719 is the UN number for caustic alkali liquid, n.o.s. It is classed in Class 8 (corrosives) for transport. Packing group II or III, depending on the form. Emergency responders use ERG guide 154.

Emergency response

The Emergency Response Guidebook (ERG2024) guide for this number:

  • Guide154Caustic alkali liquid, n.o.s.

From the 2024 Emergency Response Guidebook (ERG2024), published by U.S. Department of Transportation, PHMSA. Read the full guide in the ERG or on CAMEO Chemicals.

Identification

UN number
UN 1719
Name
Caustic alkali liquid, n.o.s.
Hazard class
Class 8: Corrosives
Packing group
II, III
What the class covers
Substances which can damage living tissue or other goods and materials on contact.

U.S. Hazardous Materials Table

2 entries share this number in 49 CFR 172.101, by name, packing group or where the shipment is going.

  • UN1719Caustic alkali liquids, n.o.s.

    • Technical name required in parentheses

    Special provisions: B2, IB2, T11, TP2, TP27

    Class
    8
    Packing group
    II
    Labels
    8

  • UN1719Caustic alkali liquids, n.o.s.

    • Technical name required in parentheses

    Special provisions: IB3, T7, TP1, TP28

    Class
    8
    Packing group
    III
    Labels
    8

From the eCFR edition of 49 CFR 172.101 dated 2026-10-05 (section last amended 2026-09-08). The eCFR is an editorial compilation, not the official legal edition. Read the current table.

About Class 8

Class 8 covers corrosive substances such as acids, alkalis and battery fluid, which can destroy skin or corrode metal on contact.

See all Class 8 UN numbers

Check the official sources

For emergency response, packaging and quantity limits, use these: