UN 1790

HYDROFLUORIC ACID with more than 85 % hydrogen fluoride

UN 1790 (variant 1 of 3, packing group I) — ADR 2025 Table A: class 8, classification code CT1, packing group I, labels 8 +6.1, special provisions 640I, limited quantity 0, excepted quantity E0, packing instructions P802, transport category 1, tunnel restriction code (C/D), hazard identification number 886.

UN 1790 (variant 2 of 3, packing group I) — ADR 2025 Table A: class 8, classification code CT1, packing group I, labels 8 +6.1, special provisions 640J, limited quantity 0, excepted quantity E0, packing instructions P001, transport category 1, tunnel restriction code (C/D), hazard identification number 886.

UN 1790 (variant 3 of 3, packing group II) — ADR 2025 Table A: class 8, classification code CT1, packing group II, labels 8 +6.1, special provisions —, limited quantity 1 L, excepted quantity E2, packing instructions P001 IBC02, transport category 2, tunnel restriction code (E), hazard identification number 86.

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

Table A — ADR 2025 (ECE/TRANS/352), UN 1790 — variant 1 of 3, packing group I
(1) UN No.1790
(2) Name and descriptionHYDROFLUORIC ACID with more than 85 % hydrogen fluoride
(3a) Class8
(3b) Classification codeCT1
(4) Packing groupI
(5) Labels8 +6.1
(6) Special provisions640I
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP802
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP2
(10) Portable tanks and bulk containers: instructionsT10
(11) Portable tanks and bulk containers: special provisionsTP2
(12) ADR tank: tank codeL21DH(+)
(13) ADR tank: special provisionsTU14 TU34 TC1 TE21 TA4 TT9 TM3
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)1 (C/D)
(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: operationS14
(20) Hazard identification No.886
Table A — ADR 2025 (ECE/TRANS/352), UN 1790 — variant 2 of 3, packing group I
(1) UN No.1790
(2) Name and descriptionHYDROFLUORIC ACID with more than 60 % but not more than 85 % hydrogen fluoride
(3a) Class8
(3b) Classification codeCT1
(4) Packing groupI
(5) Labels8 +6.1
(6) Special provisions640J
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP001
(9a) Packaging: special packing provisionsPP81
(9b) Packaging: mixed packing provisionsMP8 MP17
(10) Portable tanks and bulk containers: instructionsT10
(11) Portable tanks and bulk containers: special provisionsTP2
(12) ADR tank: tank codeL10DH
(13) ADR tank: special provisionsTU14 TE21
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)1 (C/D)
(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: operationS14
(20) Hazard identification No.886
Table A — ADR 2025 (ECE/TRANS/352), UN 1790 — variant 3 of 3, packing group II
(1) UN No.1790
(2) Name and descriptionHYDROFLUORIC ACID with not more than 60 % hydrogen fluoride
(3a) Class8
(3b) Classification codeCT1
(4) Packing groupII
(5) Labels8 +6.1
(6) Special provisions—
(7a) Limited quantities1 L
(7b) Excepted quantitiesE2
(8) Packaging: packing instructionsP001 IBC02
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP15
(10) Portable tanks and bulk containers: instructionsT8
(11) Portable tanks and bulk containers: special provisionsTP2
(12) ADR tank: tank codeL4DH
(13) ADR tank: special provisionsTU14 TE21
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)2 (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: operation—
(20) Hazard identification No.86

ADR 2027 (accepted) — no change for UN 1790

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/D): in tanks, Prohibited in C, D, E; in other carriage, Prohibited in D, E. Tanks: A, B. Packages: A, B, C. (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 8 (Corrosive substances), model 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 8, 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P802: Corrosive liquids: glass/plastics inners of 10 l (75 kg net) or metal inners of 40 l (125 kg net), glass composites 60 l, 1A1 drums 250 l, pressure receptacles. Mixed packing provision MP2: No mixed packing: the goods must be alone in their package. (ADR 4.1.4.1, P802, 4.1.10.4, MP2; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T10: Portable tank, Class 1 and 3–9: test 4 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). Tank code L21DH(+): ADR tank code for Classes 1 and 3–9: liquid tank, 21 bar, openings D, hermetically closed, suffix (+). — L: tank for liquid-state substances (liquids, or solids handed over molten); 21: minimum calculation pressure of 21 bar (see 6.8.2.1.14); D: filled and discharged from the top; nothing opens below the liquid surface; H: hermetically closed (see 1.2.1); (+): alternative use of the tank for other substances is allowed only where the certificate of type approval says so (3.2.1 column (12); 4.3.4.1.3) Tank provision TU14: Protective caps on the closures must be locked during carriage. Tank provision TU34: Tanks may be filled to no more than 0.84 kg per litre of capacity. Tank provision TC1: The materials and construction requirements of 6.8.5 apply to these shells. Tank provision TE21: Closures must be protected by lockable caps. Tank provision TA4: Conformity assessment under 1.8.7 by the competent authority or an inspection body to 1.8.6.3 accredited to EN ISO/IEC 17020:2012 type A. Tank provision TT9: Inspections and tests, including supervision of manufacture, under 1.8.7 by the competent authority or a type A accredited inspection body. Tank provision TM3: Plate must also give the proper shipping name and, in kg, the highest load mass permitted for this substance. 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 T10, 4.2.5.3, TP2, 4.3.4.1.1, tank code L21DH(+), 4.3.5, TU14, 4.3.5, TU34, 6.8.4 (a), TC1, 6.8.4 (b), TE21, 6.8.4 (c), TA4, 6.8.4 (d), TT9, 6.8.4 (e), TM3, 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 S14: Chapter 8.4 vehicle supervision applies for any amount of these substances. (ADR 7.5.11, CV13, 7.5.11, CV28, 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 I

Tunnels
Tunnel code (C/D): in tanks, Prohibited in C, D, E; in other carriage, Prohibited in D, E. Tanks: A, B. Packages: A, B, C. (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 8 (Corrosive substances), model 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 8, 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. Special packing provision PP81: UN 1790 (60–85 % HF) and UN 2031 (> 55 % nitric acid): plastics drums/jerricans as single packagings usable two years from manufacture. 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, 4.1.4.1, P001, PP81, 4.1.10.4, MP8, 4.1.10.4, MP17; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T10: Portable tank, Class 1 and 3–9: test 4 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). Tank code L10DH: ADR tank code for Classes 1 and 3–9: liquid tank, 10 bar, openings D, 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); D: filled and discharged from the top; nothing opens below the liquid surface; H: hermetically closed (see 1.2.1) Tank provision TU14: Protective caps on the closures must be locked during carriage. 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 4.2.5.2.6, portable tank instruction T10, 4.2.5.3, TP2, 4.3.4.1.1, tank code L10DH, 4.3.5, TU14, 6.8.4 (b), TE21, 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 S14: Chapter 8.4 vehicle supervision applies for any amount of these substances. (ADR 7.5.11, CV13, 7.5.11, CV28, 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 3 of 3, packing group II

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 8 (Corrosive substances), model 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 8, 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
Portable tank instruction T8: Portable tank, Class 1 and 3–9: test 4 bar; shell See 6.7.2.4.2; relief Normal; 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). Tank code L4DH: ADR tank code for Classes 1 and 3–9: liquid tank, 4 bar, openings D, 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); D: filled and discharged from the top; nothing opens below the liquid surface; H: hermetically closed (see 1.2.1) Tank provision TU14: Protective caps on the closures must be locked during carriage. 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 4.2.5.2.6, portable tank instruction T8, 4.2.5.3, TP2, 4.3.4.1.1, tank code L4DH, 4.3.5, TU14, 6.8.4 (b), TE21, 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. (ADR 7.5.11, CV13, 7.5.11, CV28; 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 8 — Corrosive SubstancesPacking Group I3 variants
UN 1790 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 1790Class 8 — Corrosive SubstancesPG IVariant 1 of 3
HYDROFLUORIC ACID with more than 85 % hydrogen fluoride
Packing Group
I
High danger
Classification Code
CT1
Tunnel Code
(C/D) meaning →
Code governing tunnel passage
Transport Category
1
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
886
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 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
E0
No excepted-quantity relief for this entry (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 640I
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 8Label 6.1

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

Special Provisions
SP 640I

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

UN 1790Class 8 — Corrosive SubstancesPG IVariant 2 of 3
HYDROFLUORIC ACID with more than 60 % but not more than 85 % hydrogen fluoride
Packing Group
I
High danger
Classification Code
CT1
Tunnel Code
(C/D) meaning →
Code governing tunnel passage
Transport Category
1
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
886
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 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
E0
No excepted-quantity relief for this entry (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Special Provisions
SP 640J
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 8Label 6.1

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

Special Provisions
SP 640J

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

UN 1790Class 8 — Corrosive SubstancesPG IIVariant 3 of 3
HYDROFLUORIC ACID with not more than 60 % hydrogen fluoride
Packing Group
II
Medium danger
Classification Code
CT1
Tunnel Code
(E) meaning →
Code governing tunnel passage
Transport Category
2
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
86
Kemler code
Limited Quantity
1 L
Max per inner package for LQ relief
Excepted Quantity
E2
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
1 L
Max per inner packaging for LQ relief (Chapter 3.4)
Excepted Quantity
E2
Max 30 ml/g per inner, 500 ml/g per outer package (Chapter 3.5)
Tunnel Code
Governs which tunnel categories the load may pass
Hazard Labels Required
Label 8Label 6.1

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

Check if UN 1790 qualifies for 1.1.3.6 exemption
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Other Corrosive Substances near UN 1790 (Class 8)

UN 1787
HYDRIODIC ACID
UN 1788
HYDROBROMIC ACID
UN 1789
HYDROCHLORIC ACID
UN 1791
HYPOCHLORITE SOLUTION
UN 1792
IODINE MONOCHLORIDE, SOLID
All Class 8 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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