UN 1381

PHOSPHORUS, WHITE or YELLOW, UNDER WATER or IN SOLUTION

UN 1381 (variant 1 of 2, packing group I) — ADR 2025 Table A: class 4.2, classification code ST3, packing group I, labels 4.2 +6.1, special provisions 503, limited quantity 0, excepted quantity E0, packing instructions P405, transport category 0, tunnel restriction code (B/E), hazard identification number 46.

UN 1381 (variant 2 of 2, packing group I) — ADR 2025 Table A: class 4.2, classification code ST4, packing group I, labels 4.2 +6.1, special provisions 503, limited quantity 0, excepted quantity E0, packing instructions P405, transport category 0, tunnel restriction code (B/E), hazard identification number 46.

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

Table A — ADR 2025 (ECE/TRANS/352), UN 1381 — variant 1 of 2, packing group I
(1) UN No.1381
(2) Name and descriptionPHOSPHORUS, WHITE or YELLOW, UNDER WATER or IN SOLUTION
(3a) Class4.2
(3b) Classification codeST3
(4) Packing groupI
(5) Labels4.2 +6.1
(6) Special provisions503
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP405
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP2
(10) Portable tanks and bulk containers: instructionsT9
(11) Portable tanks and bulk containers: special provisionsTP3 TP31
(12) ADR tank: tank codeL10DH(+)
(13) ADR tank: special provisionsTU14 TU16 TU21 TE3 TE21
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)0 (B/E)
(16) Special provisions for carriage: packagesV1
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV28
(19) Special provisions for carriage: operationS20
(20) Hazard identification No.46
Table A — ADR 2025 (ECE/TRANS/352), UN 1381 — variant 2 of 2, packing group I
(1) UN No.1381
(2) Name and descriptionPHOSPHORUS, WHITE or YELLOW, DRY
(3a) Class4.2
(3b) Classification codeST4
(4) Packing groupI
(5) Labels4.2 +6.1
(6) Special provisions503
(7a) Limited quantities0
(7b) Excepted quantitiesE0
(8) Packaging: packing instructionsP405
(9a) Packaging: special packing provisions—
(9b) Packaging: mixed packing provisionsMP2
(10) Portable tanks and bulk containers: instructionsT9
(11) Portable tanks and bulk containers: special provisionsTP3 TP31
(12) ADR tank: tank codeL10DH(+)
(13) ADR tank: special provisionsTU14 TU16 TU21 TE3 TE21
(14) Vehicle for tank carriageAT
(15) Transport category (Tunnel restriction code)0 (B/E)
(16) Special provisions for carriage: packagesV1
(17) Special provisions for carriage: bulk—
(18) Special provisions for carriage: loading, unloading and handlingCV28
(19) Special provisions for carriage: operationS20
(20) Hazard identification No.46

ADR 2027 (accepted) — no change for UN 1381

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 2, packing group I

Tunnels
Tunnel code (B/E): in tanks, Prohibited in B, C, D, E; in other carriage, Prohibited in E. Tanks: A only. Packages: A, B, C, D. (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 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 4.2, 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P405: Phosphorus (UN 1381): wet in canned or glass inners in boxes, or metal drums/jerricans; dry fused in drums up to 400 kg. Mixed packing provision MP2: No mixed packing: the goods must be alone in their package. (ADR 4.1.4.1, P405, 4.1.10.4, MP2; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T9: Portable tank, Class 1 and 3–9: test 4 bar; shell 6 mm; relief Normal; bottom openings Not allowed. Portable tank provision TP3: For solids above melting point and hot liquids, maximum filling (%) is set by 4.2.1.9.5: 95 × dr/df. Portable tank provision TP31: May be carried in tanks only in the solid state. Tank code L10DH(+): ADR tank code for Classes 1 and 3–9: liquid tank, 10 bar, openings D, hermetically closed, suffix (+). — 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); (+): 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 TU16: Uncleaned empty tanks must be handed over filled with a protective agent: nitrogen, water and nitrogen, or water at 96–98 %. Tank provision TU21: Substance must be protected by nitrogen, water and nitrogen, or a water layer of at least 12 cm, with filling limits of 96 % or 98 % at 60 °C. Tank provision TE3: Phosphorus tanks: external heating only, top-entry piping, lockable caps on openings and a level gauge for phosphorus and water. 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 T9, 4.2.5.3, TP3, 4.2.5.3, TP31, 4.3.4.1.1, tank code L10DH(+), 4.3.5, TU14, 4.3.5, TU16, 4.3.5, TU21, 6.8.4 (b), TE3, 6.8.4 (b), TE21, 9.1.1.2, AT vehicle; 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. Loading provision CV28: Pointer: the provisions of 7.5.4 apply. 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, 7.5.11, CV28, 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.

In plain words — variant 2 of 2, packing group I

Tunnels
Tunnel code (B/E): in tanks, Prohibited in B, C, D, E; in other carriage, Prohibited in E. Tanks: A only. Packages: A, B, C, D. (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 6.1 (Toxic substances) (ADR 5.2.2.2.2, label model No. 4.2, 5.2.2.2.2, label model No. 6.1; paraphrase, not yet reviewed)
Packing
Packing instruction P405: Phosphorus (UN 1381): wet in canned or glass inners in boxes, or metal drums/jerricans; dry fused in drums up to 400 kg. Mixed packing provision MP2: No mixed packing: the goods must be alone in their package. (ADR 4.1.4.1, P405, 4.1.10.4, MP2; paraphrase, not yet reviewed)
Tanks
Portable tank instruction T9: Portable tank, Class 1 and 3–9: test 4 bar; shell 6 mm; relief Normal; bottom openings Not allowed. Portable tank provision TP3: For solids above melting point and hot liquids, maximum filling (%) is set by 4.2.1.9.5: 95 × dr/df. Portable tank provision TP31: May be carried in tanks only in the solid state. Tank code L10DH(+): ADR tank code for Classes 1 and 3–9: liquid tank, 10 bar, openings D, hermetically closed, suffix (+). — 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); (+): 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 TU16: Uncleaned empty tanks must be handed over filled with a protective agent: nitrogen, water and nitrogen, or water at 96–98 %. Tank provision TU21: Substance must be protected by nitrogen, water and nitrogen, or a water layer of at least 12 cm, with filling limits of 96 % or 98 % at 60 °C. Tank provision TE3: Phosphorus tanks: external heating only, top-entry piping, lockable caps on openings and a level gauge for phosphorus and water. 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 T9, 4.2.5.3, TP3, 4.2.5.3, TP31, 4.3.4.1.1, tank code L10DH(+), 4.3.5, TU14, 4.3.5, TU16, 4.3.5, TU21, 6.8.4 (b), TE3, 6.8.4 (b), TE21, 9.1.1.2, AT vehicle; 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. Loading provision CV28: Pointer: the provisions of 7.5.4 apply. 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, 7.5.11, CV28, 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 I2 variants
UN 1381 has 2 classification variants in ADR 2025 — different hazard divisions or descriptions for the same UN number. Each variant may have different transport requirements.
UN 1381Class 4.2 — Flammable SolidsPG IVariant 1 of 2
PHOSPHORUS, WHITE or YELLOW, UNDER WATER or IN SOLUTION
Packing Group
I
High danger
Classification Code
ST3
Tunnel Code
(B/E) meaning →
Code governing tunnel passage
Transport Category
0
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
46
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 503
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 4.2Label 6.1

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

Special Provisions
SP 503

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

UN 1381Class 4.2 — Flammable SolidsPG IVariant 2 of 2
PHOSPHORUS, WHITE or YELLOW, DRY
Packing Group
I
High danger
Classification Code
ST4
Tunnel Code
(B/E) meaning →
Code governing tunnel passage
Transport Category
0
For the 1,000-point rule (0 = highest restriction)
Hazard ID No.
46
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 503
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 4.2Label 6.1

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

Special Provisions
SP 503

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

Check if UN 1381 qualifies for 1.1.3.6 exemption
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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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