HazMat Tool — substance information

2-Chloropropene

HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record. Use Print / PDF below for field notes.
UN / ID
UN 2456
Hazard class
3
Packing group
I
ERG guide
ERG 130P
Special provisions
SP N36, SP T11, SP TP2
Source
49 CFR §172 (15 June 2026)

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2-Chloropropene


2-Chloropropylene is an organochlorine compound with the formula CH2=C(Cl)CH3. It is a colorless gas that condenses just below room temperature. Unlike the closely related vinyl chloride, which is a major industrial chemical, 2-chloropropene has no commercial applications and is a lightly studied compound. In the research laboratory, it is used as a source of the 2-propenyl group Wikipedia

Substance Data

Source: PubChem (HSDB, 26.11.2019)

CAS-Number

557-98-2

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 130P

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

3
Flammable liquids

(4) Identification number Help

UN 2456

(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.
N36
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.

Similar substances

UN / IDProper shipping nameHazard class
UN 2047Dichloropropenes3