UN 3257Class 9 — Miscellaneous Dangerous SubstancesPG IIIVariant 1 of 2
ELEVATED TEMPERATURE LIQUID, N.O.S., at or above 100 °C and below its flash-point (including molten metals, molten salts, etc.), filled at a temperature higher than 190 °C
- Packing Group
- III
- Low danger
- Classification Code
- M9
- Tunnel Code
- (D) meaning →
- Code governing tunnel passage
- Transport Category
- 3
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 99
- 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 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
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, SP 643, SP 668
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 9
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
Special Provisions
SP 274SP 643SP 668
Refer to ADR 2025 Chapter 3.3 for full text of each provision.
UN 3257Class 9 — Miscellaneous Dangerous SubstancesPG IIIVariant 2 of 2
ELEVATED TEMPERATURE LIQUID, N.O.S., at or above 100 °C and below its flash-point (including molten metals, molten salts, etc.), filled at or below 190 °C
- Packing Group
- III
- Low danger
- Classification Code
- M9
- Tunnel Code
- (D) meaning →
- Code governing tunnel passage
- Transport Category
- 3
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 99
- 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 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
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, SP 643, SP 668
May alter scope or limits — full text in ADR 2025 Chapter 3.3
Hazard Labels Required
Label 9
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
Special Provisions
SP 274SP 643SP 668
Refer to ADR 2025 Chapter 3.3 for full text of each provision.