HazMat Tool — substance information
Reference only — not a shipping paper, placard mandate, or CVI record.
Naphthalene diozonide
HMT 15 June 2026- UN / ID
- —
- Hazard class
- Forbidden
- Packing group
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- ERG guide
- —
- Special provisions
- —
- Source
- 49 CFR §172 (15 June 2026)
Naphthalene diozonide
Naphthalene is an organic compound with the chemical formula C10H8. It is a white crystalline solid with a characteristic odor that is detectable at concentrations as low as 0.08 ppm. As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings, making it a simple and rather symmetrical polycyclic aromatic hydrocarbon (PAH). It is the main ingredient of traditional mothballs Wikipedia
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard classForbidden |
(4) Identification number |
(5) Packing Group |
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(6) Labels — |
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(7) Special Provisions (§172.102)
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(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | — |
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| (8B) Non-bulk | — |
| (8C) Bulk | — |
(9) Quantity Limits
| (9A) Passenger aircraft/rail | — |
|---|---|
| (9B) Cargo aircraft only | — |
(10) Vessel stowage
| (10A) Location | — |
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| (10B) Other | — |
Segregation chart for load, transport, and storage
This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.
This Hazmat is classified as "Forbidden". This means the material may not be offered for transportation or transported in the applicable mode of transport.
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|---|---|
| UN 1334 | Naphthalene, crude or Naphthalene, refined | 4.1 |
| UN 2304 | Naphthalene, molten | 4.1 |
| 1,1′-Diazoaminonaphthalene | Forbidden | |
| 1,3,5-Trinitronaphthalene | Forbidden | |
| UN 1147 | Decahydronaphthalene | 3 |
| UN 2538 | Nitronaphthalene | 4.1 |
| UN 0217 | Trinitronaphthalene | 1.1D |