UN 3361

CHLOROSILANES, TOXIC, CORROSIVE, N.O.S.

UN 3361 — ADR 2025 Table A: class 6.1, classification code TC1, packing group II, labels 6.1 +8, special provisions 274, limited quantity 0, excepted quantity E0, packing instructions P010, transport category 2, tunnel restriction code (D/E), hazard identification number 68.

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

Table A — ADR 2025 (ECE/TRANS/352), UN 3361
(1) UN No.3361
(2) Name and descriptionCHLOROSILANES, TOXIC, CORROSIVE, N.O.S.
(3a) Class6.1
(3b) Classification codeTC1
(4) Packing groupII
(5) Labels6.1 +8
(6) Special provisions274
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP010
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP15
(10) Portable tanks and bulk containers: instructionsT14
(11) Portable tanks and bulk containers: special provisionsTP2 TP7 TP27
(12) ADR tank: tank codeL4BH
(13) ADR tank: special provisionsTU15 TE19
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)2 (D/E)
(16) Special provisions for carriage: packages—
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV13 CV28
(19) Special provisions for carriage: operationS9 S19
(20) Hazard identification No.68

ADR 2027 (accepted) — no change for UN 3361

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 (D/E): in tanks, Prohibited in D, E (bulk or tanks); in other carriage, Prohibited in E. Bulk/tanks: A, B, C. Packages: A, B, C, D. (ADR 8.6.4; from the ADR table itself)
Small-load exemption
Transport category 2: at most 333 per transport unit under 1.1.3.6, counted ×3 toward the 1,000-point limit (ADR 1.1.3.6.3; from the ADR table itself)
Labels
Labels: model 6.1 (Toxic substances), model 8 (Corrosive substances) (ADR 5.2.2.2.2, label model No. 6.1, 5.2.2.2.2, label model No. 8; paraphrase, not yet reviewed)
Packing
Packing instruction P010: Glass or steel inner packagings in drums or boxes, steel single drums/jerricans, 6HA1 composites or steel pressure receptacles. Mixed packing provision MP15: Up to 3 litres per inner packaging may be mixed with goods of other codes or classes that permit it, or with non-ADR goods. (ADR 4.1.4.1, P010, 4.1.10.4, MP15; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T14: Portable tank, Class 1 and 3–9: test 6 bar; shell 6 mm; relief See 6.7.2.8.3; bottom openings Not allowed. Portable tank provision TP2: Portable tank must not be filled beyond the degree of filling set by 4.2.1.9.3 (the 95-based formula). Portable tank provision TP7: Air must be removed from the vapour space, by nitrogen or another method. Portable tank provision TP27: A 4 bar minimum test pressure tank may be used if 4 bar or less is shown acceptable under 6.7.2.1. Tank code L4BH: ADR tank code for Classes 1 and 3–9: liquid tank, 4 bar, openings B, hermetically closed. — L: tank for liquid-state substances (liquids, or solids handed over molten); 4: minimum calculation pressure of 4 bar (see 6.8.2.1.14); B: filling or discharge openings at the bottom, each with 3 closures; H: hermetically closed (see 1.2.1) Tank provision TU15: Tank must not be used to carry foodstuffs, articles of consumption or animal feeds. Tank provision TE19: Top fittings recessed, valved or shielded against overturning; bottom fittings recessed 200 mm or rail-protected; rear fittings behind the 9.7.6 bumper. Vehicle for tank carriage: AT — Tank vehicle for dangerous goods that is not EX/III, FL or a MEMU: tanks over 1 m³ / 3 m³, or battery-vehicle over 1 m³. (ADR 4.2.5.2.6, portable tank instruction T14, 4.2.5.3, TP2, 4.2.5.3, TP7, 4.2.5.3, TP27, 4.3.4.1.1, tank code L4BH, 4.3.5, TU15, 6.8.4 (b), TE19, 9.1.1.2, AT vehicle; paraphrase, not yet reviewed)
Carriage
Loading provision CV13: After a leak or spill, clean (and if needed disinfect or decontaminate) the vehicle or container before reuse; check other goods for contamination. Loading provision CV28: Pointer: the provisions of 7.5.4 apply. Operation provision S9: Any quantity: avoid service stops near inhabited or busy places; longer stops there need authority consent. Operation provision S19: Chapter 8.4 vehicle supervision applies when the total mass in the vehicle exceeds 5 000 kg. (ADR 7.5.11, CV13, 7.5.11, CV28, 8.5, S9, 8.5, S19; 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 6.1 — Toxic & Infectious SubstancesPacking Group II
UN 3361Class 6.1 — Toxic & Infectious SubstancesPG II
Packing Group
II
Medium danger
Classification Code
TC1
Tunnel Code
(D/E) meaning →
Code governing tunnel passage
Transport Category
2
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
68
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 2
×3 points per kg/L — up to 333 kg/L of this substance alone stays under the 1,000-point threshold
Per-substance max
333 kg/L
Per-substance maximum for 1.1.3.6 relief (1.1.3.6.3)
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 274
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 6.1Label 8

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

Special Provisions
SP 274

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

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All Class 6.1 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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