HazMat Tool — substance information

Selenium oxychloride

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 2879
Hazard class
8
Packing group
I
ERG guide
ERG 157
Special provisions
SP A7, SP N34, SP T10, SP TP2, SP TP13
Source
49 CFR §172 (15 June 2026)

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Selenium oxychloride

Substance Data

Source: PubChem (HSDB, 19.11.2019)

CAS-Number

7791-23-3

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 157

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard Class

8
Corrosive liquids

(4) Identification number Help

UN 2879

(5) Packing Group Help

I

(6) Labels Help

Corrosive liquids (8) Poisonous liquids PG I Zone A (6.1)

(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.
A7
N34
T10
TP2
TP13

(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 3440Selenium compound, liquid, n.o.s6.1
UN 3283Selenium compound, solid, n.o.s6.1
UN 2657Selenium disulfide6.1
UN 2194Selenium hexafluoride2.3
Selenium nitrideForbidden