HazMat Tool — substance information

Lithium

HMT 15 June 2026

UN / ID: UN 1415
Hazard class: 4.3
Packing group: I
ERG guide: ERG 138
Special provisions: SP A7, SP A19, SP IB4, SP IP1, SP N45, SP T9, SP TP7, SP TP33, more…
Source: 49 CFR §172 (15 June 2026)

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Lithium

Lithium (from Ancient Greek: λίθος, líthos, 'stone') is a chemical element; it has symbol Li and atomic number 3. It is a soft, silvery-white alkali metal. Under standard conditions, it is the least dense metal and the least dense solid element. Like all alkali metals, lithium is highly reactive and flammable, and must be stored in vacuum, inert atmosphere, or inert liquid such as purified kerosene or mineral oil Wikipedia

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

UN 1415

(5) Packing Group

(6) Labels

Cargo Aircraft Only (Cargo Aircraft Only)

(7) Special Provisions (§172.102)

×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.

Steel packagings must be corrosion-resistant or have protection against corrosion.

Browse special provision A7

A19

Combination packagings consisting of outer fiber drums or plywood drums, with inner plastic packagings, are not authorized for transportation by aircraft.

Browse special provision A19

IB4

_{Authorized IBCs:} Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N).

Browse special provision IB4

IP1

IBCs must be packed in closed freight containers or a closed transport vehicle.

Browse special provision IP1

N45

Copper cartridges are authorized as inner packagings if the hazardous material is not in dispersion.

Browse special provision N45

Minimum test pressure (bar)	4
Minimum shell thickness	6 mm
Pressure-relief requirements	Normal
Bottom opening requirements	Prohibited for liquids.

Browse special provision T9

TP7

The vapor space must be purged of air by nitrogen or other means.

Browse special provision TP7

TP33

The portable tank instruction assigned for this substance applies for granular and powdered solids and for solids which are filled and discharged at temperatures above their melting point which are cooled and transported as a solid mass. Solid substances transported or offered for transport above their melting point are authorized for transportation in portable tanks conforming to the provisions of portable tank instruction T4 for solid substances of packing group III or T7 for solid substances of packing group II, unless a tank with more stringent requirements for minimum shell thickness, maximum allowable working pressure, pressure-relief devices or bottom outlets are assigned in which case the more stringent tank instruction and special provisions shall apply. Filling limits must be in accordance with portable tank special provision TP3. Solids meeting the definition of an elevated temperature material must be transported in accordance with the applicable requirements of this subchapter.

Browse special provision TP33

W31

Non-bulk packagings must be hermetically sealed.

Browse special provision W31

(8) Packing Authorizations (§173.***)

(8A) Exceptions	151	see 49 CFR §173.151
(8B) Non-bulk	211	see 49 CFR §173.211
(8C) Bulk	244	see 49 CFR §173.244

(9) Quantity Limits

(9A) Passenger aircraft/rail	Forbidden
(9B) Cargo aircraft only	15 kg

(10) Vessel stowage

(10A) Location

Stowage category “D” means the material must be stowed “on deck only” on a cargo vessel or on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers or one passenger per each 3 m of overall vessel length, but the material is prohibited on a passenger vessel in which the limiting number of passengers is exceeded.

Source: 49 CFR §172.101(k)

(10B) Other

13	see 49 CFR §176.84
52	see 49 CFR §176.84
148	see 49 CFR §176.84

Source: 49 CFR §176.84

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.

Hazard class	8	7	6.1	5.2	5.1	4.3	4.2	4.1	3	2.3B	2.3A	2.2	2.1	1.6	1.5	1.4	1.3	1.1/1.2
1.1/1.2
1.3
1.4
1.5
1.6
2.1
2.2
2.3A
2.3B
3
4.1
4.2
4.3
5.1
5.2
6.1
7
8

	Must not be loaded, transported, or stored together in the same vehicle or facility.
	May be loaded, transported, or stored together.
	May be loaded, transported, or stored together only with restrictions.

Similar substances

UN / ID	Proper shipping name	Hazard class
UN 3536	Lithium batteries installed in cargo transport unit lithium ion batteries or lithium metal batteries	9
UN 3481	Lithium ion batteries contained in equipment including lithium ion polymer batteries	9
UN 3481	Lithium ion batteries packed with equipment including lithium ion polymer batteries	9
UN 3091	Lithium metal batteries contained in equipment including lithium alloy batteries	9
UN 3091	Lithium metal batteries packed with equipment including lithium alloy batteries	9
UN 3480	Lithium ion batteries including lithium ion polymer batteries	9
UN 1471	Lithium hypochlorite, dry or Lithium hypochlorite mixture	5.1
UN 3090	Lithium metal batteries including lithium alloy batteries	9
UN 1411	Lithium aluminum hydride, ethereal	4.3
UN 2805	Lithium hydride, fused solid	4.3
UN 1410	Lithium aluminum hydride	4.3
UN 2679	Lithium hydroxide, solution	8
UN 1413	Lithium borohydride	4.3
UN 2830	Lithium ferrosilicon	4.3
UN 1414	Lithium hydride	4.3