HazMat Tool — substance information

Piperidine

HMT May 2026
UN / ID
UN 2401
Hazard class
8
Packing group
I
ERG guide
ERG 132
Special provisions
SP A10, SP T10, SP TP2
Source
49 CFR §172 (2026/05)

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Piperidine


Piperidine is an organic compound with the molecular formula (CH2)5NH. This heterocyclic amine consists of a six-membered ring containing five methylene bridges (–CH2–) and one amine bridge (–NH–). It is a colorless liquid with an odor described as objectionable, human sperm-like, typical of amines. The name comes from the genus name Piper, which is the Latin word for pepper. Wikipedia

Substance Data

Source: PubChem

CAS-Number

110-89-4

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 132

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2401

(5) Packing Group Help

I

(6) Labels Help

Corrosive liquids (8) Flammable liquids (3)

(7) Special Provisions (§172.102) Help

×Note:
Special provisions may be very complex. The extracts are taken from 49 CFR §172.102. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
A10
T10
TP2

(8) Packing Authorizations (§173.***) Help

(8A) ExceptionsNone
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail0.5 L
(9B) Cargo aircraft only2.5 L

(10) Vessel stowage Help

(10A) Location
(10B) Other

Segregation chart for load, transport, and storage

This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.

Prohibited Must not be loaded, transported, or stored together in the same vehicle or facility.
Permitted May be loaded, transported, or stored together.
Restricted May be loaded, transported, or stored together only with restrictions.

Similar substances

UN / IDProper shipping nameHazard class
UN 23861-Ethylpiperidine3
UN 23991-Methylpiperidine3