HazMat Tool — substance information
Reference only — not a shipping paper, placard mandate, or CVI record.
Nickel nitrite
HMT 15 June 2026Nickel nitrite
Nickel(II) nitrite is an inorganic compound with the chemical formula Ni(NO2)2. Anhydrous nickel nitrite was first discovered in 1961 by Cyril Clifford Addison, who allowed gaseous nickel tetracarbonyl to react with dinitrogen tetroxide, yielding a green smoke. Nickel nitrite was the second transition element anhydrous nitrite discovered after silver nitrite Wikipedia
| Emergency Response Guide No. 140 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard class5.1Oxidizers |
(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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| A1 | |
|---|---|
| IB8 | |
| IP3 | |
| T1 | |
| TP33 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | 152 | see 49 CFR §173.152 |
|---|---|---|
| (8B) Non-bulk | 213 | see 49 CFR §173.213 |
| (8C) Bulk | 240 | see 49 CFR §173.240 |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | 25 kg |
|---|---|
| (9B) Cargo aircraft only | 100 kg |
(10) Vessel stowage 
| (10A) Location | |
|---|---|
| (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.
| Hazard class | 8![]() | 7![]() | 6.1![]() | 5.2![]() | 5.1![]() | 4.3![]() | 4.2![]() | 4.1![]() | 3![]() | 2.3B![]() | 2.3A![]() | 2.2![]() | 2.1![]() | 1.6![]() | 1.5![]() | 1.4![]() | 1.3![]() | 1.1/1.2![]() |
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3 ![]() | ||||||||||||||||||
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5.1 ![]() | ||||||||||||||||||
5.2 ![]() | ||||||||||||||||||
6.1 ![]() | ||||||||||||||||||
7 ![]() | ||||||||||||||||||
8 ![]() |
| Must not be loaded, transported, or stored together in the same vehicle or facility. | |
| May be loaded, transported, or stored together. | |
| May be loaded, transported, or stored together only with restrictions. |
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|---|---|
| UN 3219 | Nitrites, inorganic, aqueous solution, n.o.s | 5.1 |
| UN 1487 | Potassium nitrate and sodium nitrite mixtures | 5.1 |
| UN 2627 | Nitrites, inorganic, n.o.s. | 5.1 |
| UN 2351 | Butyl nitrites | 3 |
| UN 1194 | Ethyl nitrite solutions | 3 |
| UN 1512 | Zinc ammonium nitrite | 5.1 |