HazMat Tool — substance information
Nitrogen trichloride
HMT 15 June 2026- UN / ID
- n/a
- Hazard class
- Forbidden
- Packing group
- —
- ERG guide
- —
- Special provisions
- —
- Source
- 49 CFR §172 (15 June 2026)
Nitrogen trichloride
Nitrogen trichloride, also known as trichloramine, is the chemical compound with the formula NCl3. This yellow, oily, and explosive liquid is most commonly encountered as a product of chemical reactions between ammonia-derivatives and chlorine (for example, in swimming pools). Alongside monochloramine and dichloramine, trichloramine is responsible for the distinctive 'chlorine smell' associated with swimming pools, where the compound is readily formed as a product from hypochlorous acid reacting with ammonia and other nitrogenous substances in the water, such as urea from urine 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 n/a |
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(7) Special Provisions (§172.102)
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(8) Packing Authorizations (§173.***)
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| (8A) Exceptions | n/a | see 49 CFR §173. n/a |
|---|---|---|
| (8B) Non-bulk | n/a | see 49 CFR §173. n/a |
| (8C) Bulk | n/a | see 49 CFR §173. n/a |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | n/a |
|---|---|
| (9B) Cargo aircraft only | n/a |
(10) Vessel stowage
| (10A) Location | |
|---|---|
| (10B) Other | n/a |
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.