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Aluminum, molten

HMT 15 June 2026

UN / ID: NA 9260
Hazard class: 9
Packing group: III
ERG guide: —
Special provisions: SP IB3, SP T1, SP TP3
Source: 49 CFR §172 (15 June 2026)

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Aluminum, molten

Aluminium (the Commonwealth and preferred IUPAC name) or aluminum (North American English) is a chemical element; it has symbol Al and atomic number 13. It has a density lower than other common metals, about one-third that of steel. Aluminium has a great affinity toward oxygen, forming a protective layer of oxide on the surface when exposed to air. It visually resembles silver, both in its color and in its great ability to reflect light Wikipedia

Substance Data

Source: PubChem (HSDB, 09.12.2019)

CAS-Number

7429-90-5

Flash Point

—

Boiling Point

—

Hazardous Materials Table

Source: 49 CFR §172 (15 June 2026)

(3) Hazard class

9
Miscellaneous hazardous materials

(4) Identification number

NA 9260

(5) Packing Group

III

(6) Labels

(1) Symbols

This entry is signed with "D". The letter "D" identifies proper shipping names which are appropriate for describing materials for domestic transportation but may be inappropriate for international transportation under the provisions of international regulations (e.g., IMO, ICAO). An alternate proper shipping name may be selected when either domestic or international transportation is involved.

(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.

IB3

_{Authorized IBCs:} Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2).
_{Additional Requirement:} Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized, except for UN2672 (also see special provision IP8 in Table 2 for UN2672).

Browse special provision IB3

Minimum test pressure (bar)	1.5
Minimum shell thickness	§ 178.274(d)(2)
Pressure-relief requirements	Normal
Bottom opening requirements	§ 178.275(d)(2)

Browse special provision T1

TP3

The maximum degree of filling (in %) for solids transported above their melting points and for elevated temperature liquids shall be determined by the following:
TP3

Where: d_f and d_r are the mean densities of the liquid at the mean temperature of the liquid during filling and the maximum mean bulk temperature during transport respectively.

Browse special provision TP3

(8) Packing Authorizations (§173.***)

(8A) Exceptions	None
(8B) Non-bulk	None
(8C) Bulk	247	see 49 CFR §173.247

(9) Quantity Limits

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

(10) Vessel stowage

(10A) Location	D 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	—

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.

No compatibility information for class 9 in 49 CFR §177.848 included.

Scope & sources (important)Click to show CFR references

This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):

§177.834 - General requirements
§177.835 - Class 1 materials
§177.837 - Class 3 materials
§177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
§177.839 - Class 8 (corrosive) materials
§177.840 - Class 2 (gases) materials
§177.841 - Division 6.1 and Division 2.3 materials
§177.842 - Class 7 (radioactive) material
§177.843 - Contamination of vehicles

Similar substances

UN / ID	Proper shipping name	Hazard class
UN 2870	Aluminum borohydride or Aluminum borohydride in devices	4.2
UN 3170	Aluminum smelting by-products or Aluminum remelting by-products	4.3
	Aluminum dross, wet or hot	Forbidden
UN 1398	Aluminum silicon powder, uncoated	4.3
UN 1411	Lithium aluminum hydride, ethereal	4.3
UN 1725	Aluminum bromide, anhydrous	8
UN 2580	Aluminum bromide, solution	8
UN 1726	Aluminum chloride, anhydrous	8
UN 2581	Aluminum chloride, solution	8
UN 1395	Aluminum ferrosilicon powder	4.3
UN 3048	Aluminum phosphide pesticides	6.1
UN 1309	Aluminum powder, coated	4.1
UN 1396	Aluminum powder, uncoated	4.3
UN 1410	Lithium aluminum hydride	4.3
UN 1419	Magnesium aluminum phosphide	4.3