HazMat Tool — substance information Reference only — not a shipping paper, placard mandate, or CVI record.

Aluminum hydride

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 2463
Hazard class
4.3
Packing group
I (multiple — see tabs)
ERG guide
ERG 138
Special provisions
SP A19, SP N40, SP W31
Source
49 CFR §172 (15 June 2026)

Spot an error in this entry?

Aluminum hydride

Emergency Response Guide No. 138

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

4.3
Dangerous when wet materials

(4) Identification number Help

UN 2463

(5) Packing Group Help

I

(6) Labels Help

Dangerous when wet materials (4.3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A19
N40
W31

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

(8A) ExceptionsNone
(8B) Non-bulk211see 49 CFR §173.211
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only15 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard class

4.3
Dangerous when wet materials

(4) Identification number Help

UN 1410

(5) Packing Group Help

I

(6) Labels Help

Dangerous when wet materials (4.3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A19
W31

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

(8A) ExceptionsNone
(8B) Non-bulk211see 49 CFR §173.211
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only15 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

(3) Hazard class

4.3
Dangerous when wet materials

(4) Identification number Help

UN 2835

(5) Packing Group Help

II

(6) Labels Help

Dangerous when wet materials (4.3) Cargo Aircraft Only (Cargo Aircraft Only)

(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.
A8
A19
A20
IB4
T3
TP33
W31
W40

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

(8A) Exceptions151see 49 CFR §173.151
(8B) Non-bulk212see 49 CFR §173.212
(8C) Bulk242see 49 CFR §173.242

(9) Quantity Limits Help

(9A) Passenger aircraft/railForbidden
(9B) Cargo aircraft only50 kg

(10) Vessel stowage Help

(10A) Location
(10B) Other

Packing group comparison

Multiple packing groups apply to this entry. See assignment criteria in 49 CFR §173 Subpart D. Details are in the tabs above; differences are highlighted.

PG I PG I PG II
1
2Aluminum hydrideLithium aluminum hydrideSodium aluminum hydride
34.34.34.3
4UN 2463UN 1410UN 2835
5IIII
64.34.34.3
7A19, N40, W31A19, W31A8, A19, A20, IB4, T3, TP33, W31, W40
8ANoneNone151
8B211211212
8C242242242
9AForbiddenForbiddenForbidden
9B15 kg15 kg50 kg
10AEEE
10B13, 14813, 52, 14813, 52, 148

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.