HazMat Tool — substance information

Arsine

HMT May 2026
UN / ID
UN 2188
Hazard class
2.3
Packing group
ERG guide
ERG 119
Special provisions
SP 1
Source
49 CFR §172 (2026/05)

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Arsine


Arsine (IUPAC name: arsane) is an inorganic compound with the formula AsH3. This flammable, pyrophoric, and highly toxic pnictogen hydride gas is one of the simplest compounds of arsenic. Despite its lethality, it finds some applications in the semiconductor industry and for the synthesis of organoarsenic compounds. The term arsine is commonly used to describe a class of organoarsenic compounds of the formula AsH3−xRx, where R = aryl or alkyl. Wikipedia

Substance Data

Source: PubChem (HSDB, 27.11.2019)

CAS-Number

7784-42-1

Flash Point

n/a

Boiling Point

n/a

Emergency Response Guide No. 119

Hazardous Materials Table

Source: 49 CFR §172 (2026/05)

(3) Hazard Class

2.3
Poisonous gas

(4) Identification number Help

UN 2188

(5) Packing Group Help

n/a

(6) Labels Help

Poisonous gas (2.3) Flammable gases (2.1)

(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.
1

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

(8A) ExceptionsNone
(8B) Non-bulk192see 49 CFR §173.192
(8C) Bulk245see 49 CFR §173.245

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft onlyForbidden

(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 3522Arsine, adsorbed2.3
UN 1698Diphenylamine chloroarsine6.1
UN 1699Diphenylchloroarsine, liquid6.1
UN 3450Diphenylchloroarsine, solid6.1
DichlorovinylchloroarsineForbidden
UN 1892Ethyldichloroarsine6.1
NA 1556Methyldichloroarsine6.1