UN 2441

TITANIUM TRICHLORIDE, PYROPHORIC or TITANIUM TRICHLORIDE MIXTURE, PYROPHORIC

UN 2441 — ADR 2025 Table A: class 4.2, classification code SC4, packing group I, labels 4.2 +8, special provisions 537, limited quantity 0, excepted quantity E0, packing instructions P404, transport category 0, tunnel restriction code (E), hazard identification number —.

UNECE ADR 2025, ECE/TRANS/352 · checked 2026-10-28

Table A — ADR 2025 (ECE/TRANS/352), UN 2441
(1) UN No.2441
(2) Name and descriptionTITANIUM TRICHLORIDE, PYROPHORIC or TITANIUM TRICHLORIDE MIXTURE, PYROPHORIC
(3a) Class4.2
(3b) Classification codeSC4
(4) Packing groupI
(5) Labels4.2 +8
(6) Special provisions537
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP404
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP13
(10) Portable tanks and bulk containers: instructions—
(11) Portable tanks and bulk containers: special provisions—
(12) ADR tank: tank code—
(13) ADR tank: special provisions—
(14) Vehicle for tank carriage—
(15) Transport category (Tunnel restriction code)0 (E)
(16) Special provisions for carriage: packagesV1
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handling—
(19) Special provisions for carriage: operationS20
(20) Hazard identification No.—

ADR 2027 (accepted) — no change for UN 2441

ADR 2027 was accepted: depositary notification C.N.395.2026 (9 October 2026) records no objection to the amendments proposed by C.N.252.2026. It applies from 1 January 2027, and ADR 2025 may still be applied until 30 June 2027 (1.6.1.1). (C.N.395.2026)

ADR 2027: no Table A change for this entry (checked against ECE/TRANS/WP.15/274, Add.1 and Corr.1). Other parts of ADR 2027 may still affect its carriage.

ADR 2025 remains the edition FreightUtils serves and the one that applies until ADR 2027 takes effect on 1 January 2027; after that, ADR 2025 may still be applied until 30 June 2027 (1.6.1.1).

All ADR 2027 Table A changes →Check a list of UN numbers →

In plain words

Tunnels
Tunnel code (E): in tanks, Prohibited in E; in other carriage, Prohibited in E. Every category except E. (ADR 8.6.4; from the ADR table itself)
Small-load exemption
Transport category 0: no 1.1.3.6 exemption applies (ADR 1.1.3.6.3; from the ADR table itself)
Labels
Labels: model 4.2 (Substances liable to spontaneous combustion), model 8 (Corrosive substances) (ADR 5.2.2.2.2, label model No. 4.2, 5.2.2.2.2, label model No. 8; paraphrase, not yet reviewed)
Packing
Packing instruction P404: Pyrophoric solids: sealed metal (15 kg) or canned glass (1 kg) inners in 125 kg outers, metal or composite packagings to 150 kg gross, or pressure receptacles. Mixed packing provision MP13: Up to 3 kg per inner packaging and per package may be mixed with goods of other codes or classes that permit it, or with non-ADR goods. (ADR 4.1.4.1, P404, 4.1.10.4, MP13; paraphrase, not yet reviewed)
Carriage
Carriage provision V1: Packages must go on a closed or sheeted vehicle or in a closed or sheeted container; open vehicles and containers are not allowed. Operation provision S20: Chapter 8.4 supervision applies above 10 000 kg in packages, or above 3 000 litres in tanks. (ADR 7.2.4, V1, 8.5, S20; paraphrase, not yet reviewed)

Assembled from FreightUtils' meanings of the Table A codes, not the official text. A statement marked “not yet reviewed” has not yet been checked against ADR by a person.

Class 4.2 — Flammable SolidsPacking Group I
UN 2441Class 4.2 — Flammable SolidsPG I
Packing Group
I
High danger
Classification Code
SC4
Tunnel Code
(E) meaning →
Code governing tunnel passage
Transport Category
0
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
—
Kemler code
Limited Quantity
0
Max per inner package for LQ relief
Excepted Quantity
E0
EQ code for excepted quantity relief
Thresholds — why, not just the verdict
Transport Category
Category 0
Never exempt — any quantity requires full ADR compliance
Per-substance max
0 kg/L
Per-substance maximum (1.1.3.6.3) — Category 0 is never exempt
Limited Quantity
Not permitted
No limited-quantity relief for this entry (Chapter 3.4)
Excepted Quantity
E0
No excepted-quantity relief for this entry (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 537
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 4.2Label 8

These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.

Special Provisions
SP 537

Refer to ADR 2025 Chapter 3.3 for full text of each provision.

Check if UN 2441 qualifies for 1.1.3.6 exemption
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Other Flammable Solids near UN 2441 (Class 4.2)

UN 2217
SEED CAKE with not more than 1.5…
UN 2318
SODIUM HYDROSULPHIDE with less t…
UN 2447
PHOSPHORUS, WHITE, MOLTEN
UN 2545
HAFNIUM POWDER, DRY
UN 2546
TITANIUM POWDER, DRY
All Class 4.2 UN numbers →
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📅Data: UNECE ADR 2025 (ECE/TRANS/352), via EU Directive 2008/68/EC. Last verified October 2026

ADR reference data only. Classification is the consignor's legal responsibility. Consult a DGSA for compliance decisions.

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