UN 1748 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 1748Class 5.1 — Oxidising Substances & Organic PeroxidesPG IIVariant 1 of 2
CALCIUM HYPOCHLORITE, DRY or CALCIUM HYPOCHLORITE MIXTURE, DRY with more than 39 % available chlorine (8.8 % available oxygen)
- Packing Group
- II
- Medium danger
- Classification Code
- O2
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 2
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 50
- Kemler code
- Limited Quantity
- 1 kg
- 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 kg
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
Special Provisions
SP 314
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 5.1
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
Special Provisions
SP 314
Refer to ADR 2025 Chapter 3.3 for full text of each provision.
UN 1748Class 5.1 — Oxidising Substances & Organic PeroxidesPG IIIVariant 2 of 2
CALCIUM HYPOCHLORITE, DRY or CALCIUM HYPOCHLORITE MIXTURE, DRY with more than 39 % available chlorine (8.8 % available oxygen)
- Packing Group
- III
- Low danger
- Classification Code
- O2
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 3
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 50
- Kemler code
- Limited Quantity
- 5 kg
- 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 3
×1 points per kg/L — up to 1,000 kg/L of this substance alone stays under the 1,000-point threshold
Per-substance max
1,000 kg/L
Per-substance maximum for 1.1.3.6 relief (1.1.3.6.3)
Limited Quantity
5 kg
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 316
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 5.1
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
Special Provisions
SP 316
Refer to ADR 2025 Chapter 3.3 for full text of each provision.
Check if UN 1748 qualifies for 1.1.3.6 exemption
Calculate small load points and check exemption thresholds
ADR 2027 (accepted)
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)
The ADR 2027 amendments (ECE/TRANS/WP.15/274, ECE/TRANS/WP.15/274/Add.1, ECE/TRANS/WP.15/274/Corr.1) make no change to this entry's Table A columns. 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 →📅Data: UNECE ADR 2025 (ECE/TRANS/352), via EU Directive 2008/68/EC. Last verified August 2026
ADR reference data only. Classification is the consignor's legal responsibility. Consult a DGSA for compliance decisions.
Stay updated
ADR 2027 changes, new tools, and freight industry updates. No spam, unsubscribe anytime.
Found an error? Let us know → contact@freightutils.com