HazMat Tool — substance information

Isopentenes

HMT May 2026
UN / ID
UN 2371
Hazard class
3
Packing group
I
ERG guide
ERG 128
Special provisions
SP T11, SP TP2
Source
49 CFR §172 (2026/05)

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Isopentenes

Emergency Response Guide No. 128

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

3
Flammable liquids

(4) Identification number Help

UN 2371

(5) Packing Group Help

I

(6) Labels Help

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.
T11
TP2

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

(8A) Exceptions150see 49 CFR §173.150
(8B) Non-bulk201see 49 CFR §173.201
(8C) Bulk243see 49 CFR §173.243

(9) Quantity Limits Help

(9A) Passenger aircraft/rail1 L
(9B) Cargo aircraft only30 L

(10) Vessel stowage Help

(10A) Location
(10B) Other n/a

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.