UN 2031Class 8 — Corrosive SubstancesPG IVariant 1 of 3
NITRIC ACID, other than red fuming, with more than 70 % nitric acid
- Packing Group
- I
- High danger
- Classification Code
- CO1
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 1
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 885
- 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
Hazard Labels Required
Label 8Label 5.1
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
UN 2031Class 8 — Corrosive SubstancesPG IIVariant 2 of 3
NITRIC ACID, other than red fuming, with at least 65 %, but not more than 70 % nitric acid
- Packing Group
- II
- Medium danger
- Classification Code
- CO1
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 2
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 85
- 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 5.1
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.
UN 2031Class 8 — Corrosive SubstancesPG IIVariant 3 of 3
NITRIC ACID, other than red fuming, with less than 65 % nitric acid
- Packing Group
- II
- Medium danger
- Classification Code
- C1
- Tunnel Code
- (E) meaning →
- Code governing tunnel passage
- Transport Category
- 2
- For the 1,000-point rule (0 = highest restriction)
- Hazard ID No.
- 80
- 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 8
These labels must be displayed on packages and vehicle placards in accordance with ADR 2025.