UN 2024

MERCURY COMPOUND, LIQUID, N.O.S.

UN 2024 (variant 1 of 3, packing group I) — ADR 2025 Table A: class 6.1, classification code T4, packing group I, labels 6.1, special provisions 43 274, limited quantity 0, excepted quantity E5, packing instructions P001, transport category 1, tunnel restriction code (C/E), hazard identification number 66.

UN 2024 (variant 2 of 3, packing group II) — ADR 2025 Table A: class 6.1, classification code T4, packing group II, labels 6.1, special provisions 43 274, limited quantity 100 ml, excepted quantity E4, packing instructions P001 IBC02, transport category 2, tunnel restriction code (D/E), hazard identification number 60.

UN 2024 (variant 3 of 3, packing group III) — ADR 2025 Table A: class 6.1, classification code T4, packing group III, labels 6.1, special provisions 43 274, limited quantity 5 L, excepted quantity E1, packing instructions P001 IBC03 LP01 R001, transport category 2, tunnel restriction code (E), hazard identification number 60.

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

Table A — ADR 2025 (ECE/TRANS/352), UN 2024 — variant 1 of 3, packing group I
(1) UN No.2024
(2) Name and descriptionMERCURY COMPOUND, LIQUID, N.O.S.
(3a) Class6.1
(3b) Classification codeT4
(4) Packing groupI
(5) Labels6.1
(6) Special provisions43 274
(7a) Limited quantities0
(7b) Excepted quantitiesE5
(8) Packaging: packing instructionsP001
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP8 MP17
(10) Portable tanks and bulk containers: instructions—
(11) Portable tanks and bulk containers: special provisions—
(12) ADR tank: tank codeL10CH
(13) ADR tank: special provisionsTU14 TU15 TE19 TE21
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)1 (C/E)
(16) Special provisions for carriage: packages—
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV1 CV13 CV28
(19) Special provisions for carriage: operationS9 S14
(20) Hazard identification No.66
Table A — ADR 2025 (ECE/TRANS/352), UN 2024 — variant 2 of 3, packing group II
(1) UN No.2024
(2) Name and descriptionMERCURY COMPOUND, LIQUID, N.O.S.
(3a) Class6.1
(3b) Classification codeT4
(4) Packing groupII
(5) Labels6.1
(6) Special provisions43 274
(7a) Limited quantities100 ml
(7b) Excepted quantitiesE4
(8) Packaging: packing instructionsP001 IBC02
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP15
(10) Portable tanks and bulk containers: instructions—
(11) Portable tanks and bulk containers: special provisions—
(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.60
Table A — ADR 2025 (ECE/TRANS/352), UN 2024 — variant 3 of 3, packing group III
(1) UN No.2024
(2) Name and descriptionMERCURY COMPOUND, LIQUID, N.O.S.
(3a) Class6.1
(3b) Classification codeT4
(4) Packing groupIII
(5) Labels6.1
(6) Special provisions43 274
(7a) Limited quantities5 L
(7b) Excepted quantitiesE1
(8) Packaging: packing instructionsP001 IBC03 LP01 R001
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP19
(10) Portable tanks and bulk containers: instructions—
(11) Portable tanks and bulk containers: special provisions—
(12) ADR tank: tank codeL4BH
(13) ADR tank: special provisionsTU15 TE19
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)2 (E)
(16) Special provisions for carriage: packagesV12
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV13 CV28
(19) Special provisions for carriage: operationS9
(20) Hazard identification No.60

ADR 2027 (accepted) — no change for UN 2024

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 — variant 1 of 3, packing group I

Tunnels
Tunnel code (C/E): in tanks, Prohibited in C, D, E; in other carriage, Prohibited in E. Tanks: A, B. Packages: A, B, C, D. (ADR 8.6.4; from the ADR table itself)
Small-load exemption
Transport category 1: at most 20 per transport unit under 1.1.3.6, counted ×50 toward the 1,000-point limit (ADR 1.1.3.6.3; from the ADR table itself)
Labels
Labels: model 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P001: General packing instruction for liquids: combination, single, composite packagings and pressure receptacles, with capacity/mass limits by packing group. Mixed packing provision MP8: Up to 3 litres per inner packaging may be mixed with same-class goods of other classification codes or with non-ADR goods. Mixed packing provision MP17: Up to 0.5 litre per inner and 1 litre per package may be mixed with other classes (not Class 7) that permit it, or with non-ADR goods. (ADR 4.1.4.1, P001, 4.1.10.4, MP8, 4.1.10.4, MP17; paraphrase, not yet reviewed)
Tanks
Tank code L10CH: ADR tank code for Classes 1 and 3–9: liquid tank, 10 bar, openings C, hermetically closed. — L: tank for liquid-state substances (liquids, or solids handed over molten); 10: minimum calculation pressure of 10 bar (see 6.8.2.1.14); C: filled and discharged from the top; below the liquid surface there are cleaning openings only; H: hermetically closed (see 1.2.1) Tank provision TU14: Protective caps on the closures must be locked during carriage. 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. Tank provision TE21: Closures must be protected by lockable caps. 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 4.3.4.1.1, tank code L10CH, 4.3.5, TU14, 4.3.5, TU15, 6.8.4 (b), TE19, 6.8.4 (b), TE21, 9.1.1.2, AT vehicle; paraphrase, not yet reviewed)
Carriage
Loading provision CV1: Public-place loading/unloading: special permission needed inside built-up areas, advance notice to the authorities outside them. 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 S14: Chapter 8.4 vehicle supervision applies for any amount of these substances. (ADR 7.5.11, CV1, 7.5.11, CV13, 7.5.11, CV28, 8.5, S9, 8.5, S14; 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.

In plain words — variant 2 of 3, packing group II

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) (ADR 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P001: General packing instruction for liquids: combination, single, composite packagings and pressure receptacles, with capacity/mass limits by packing group. Packing instruction IBC02: Liquids under IBC02 may use metal (31A/31B/31N), rigid plastics (31H1/31H2) or composite 31HZ1 IBCs, with B and BB limits per UN number. 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, P001, 4.1.4.2, IBC02, 4.1.10.4, MP15; paraphrase, not yet reviewed)
Tanks
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 4.3.4.1.1, 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.

In plain words — variant 3 of 3, packing group III

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 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) (ADR 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P001: General packing instruction for liquids: combination, single, composite packagings and pressure receptacles, with capacity/mass limits by packing group. Packing instruction IBC03: Liquids under IBC03 may use metal 31-series, rigid plastics 31H1/31H2 or a wider set of 31H composite IBCs. Packing instruction LP01: Liquids in large packagings: glass, plastics or metal inners in 50-series outers, packing group III only, up to 3 m3. Packing instruction R001: R001 permits light gauge metal packagings 0A1 and 0A2 up to 40 l / 50 kg for packing groups II and III; packing group I is not allowed. Mixed packing provision MP19: Up to 5 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, P001, 4.1.4.2, IBC03, 4.1.4.3, LP01, 4.1.4.1, R001, 4.1.10.4, MP19; paraphrase, not yet reviewed)
Tanks
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 4.3.4.1.1, tank code L4BH, 4.3.5, TU15, 6.8.4 (b), TE19, 9.1.1.2, AT vehicle; paraphrase, not yet reviewed)
Carriage
Carriage provision V12: IBCs of type 31HZ2 (31HA2, 31HB2, 31HN2, 31HD2, 31HH2) must be carried in closed vehicles or closed containers. 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. (ADR 7.2.4, V12, 7.5.11, CV13, 7.5.11, CV28, 8.5, S9; 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 I3 variants
UN 2024 has 3 classification variants in ADR 2025 — different hazard divisions or descriptions for the same UN number. Each variant may have different transport requirements.
UN 2024Class 6.1 — Toxic & Infectious SubstancesPG IVariant 1 of 3
MERCURY COMPOUND, LIQUID, N.O.S.
Packing Group
I
High danger
Classification Code
T4
Tunnel Code
(C/E) meaning →
Code governing tunnel passage
Transport Category
1
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
66
Kemler code
Limited Quantity
0
Max per inner package for LQ relief
Excepted Quantity
E5
EQ code for excepted quantity relief
Thresholds — why, not just the verdict
Transport Category
Category 1
×50 points per kg/L — up to 20 kg/L of this substance alone stays under the 1,000-point threshold
Per-substance max
20 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
E5
Max 1 ml/g per inner, 300 ml/g per outer package (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 43, SP 274
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 6.1

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

Special Provisions
SP 43SP 274

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

UN 2024Class 6.1 — Toxic & Infectious SubstancesPG IIVariant 2 of 3
MERCURY COMPOUND, LIQUID, N.O.S.
Packing Group
II
Medium danger
Classification Code
T4
Tunnel Code
(D/E) meaning →
Code governing tunnel passage
Transport Category
2
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
60
Kemler code
Limited Quantity
100 ml
Max per inner package for LQ relief
Excepted Quantity
E4
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
100 ml
Max per inner packaging for LQ relief (Chapter 3.4)
Excepted Quantity
E4
Max 1 ml/g per inner, 500 ml/g per outer package (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 43, SP 274
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 6.1

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

Special Provisions
SP 43SP 274

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

UN 2024Class 6.1 — Toxic & Infectious SubstancesPG IIIVariant 3 of 3
MERCURY COMPOUND, LIQUID, N.O.S.
Packing Group
III
Low danger
Classification Code
T4
Tunnel Code
(E) meaning →
Code governing tunnel passage
Transport Category
2
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
60
Kemler code
Limited Quantity
5 L
Max per inner package for LQ relief
Excepted Quantity
E1
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
5 L
Max per inner packaging for LQ relief (Chapter 3.4)
Excepted Quantity
E1
Max 30 ml/g per inner, 1,000 ml/g per outer package (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 43, SP 274
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 6.1

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

Special Provisions
SP 43SP 274

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

Check if UN 2024 qualifies for 1.1.3.6 exemption
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Other Toxic & Infectious Substances near UN 2024 (Class 6.1)

UN 2021
CHLOROPHENOLS, LIQUID
UN 2022
CRESYLIC ACID
UN 2023
EPICHLOROHYDRIN
UN 2025
MERCURY COMPOUND, SOLID, N.O.S.
UN 2026
PHENYLMERCURIC COMPOUND, N.O.S.
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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