HazMat Tool — substance information
Strontium phosphide
HMT 15 June 2026- UN / ID
- UN 2013
- Hazard class
- 4.3
- Packing group
- I
- ERG guide
- ERG 139
- Special provisions
- SP A19, SP N40, SP W31
- Source
- 49 CFR §172 (15 June 2026)
Strontium phosphide
Strontium phosphide is an inorganic compound of strontium and phosphorus with the chemical formula Sr3P2. The compound looks like black crystalline material Wikipedia
Substance Data
Source: PubChemCAS-Number12504-13-1 |
Flash Pointn/a | Boiling Pointn/a |
| Emergency Response Guide No. 139 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard Class4.3Dangerous when wet materials |
(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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| A19 | |
|---|---|
| N40 | |
| W31 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | None | |
|---|---|---|
| (8B) Non-bulk | 211 | see 49 CFR §173.211 |
| (8C) Bulk | None |
(9) Quantity Limits 
| (9A) Passenger aircraft/rail | Forbidden |
|---|---|
| (9B) Cargo aircraft only | 15 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 1691 | Strontium arsenite | 6.1 |
| UN 1506 | Strontium chlorate | 5.1 |
| UN 1507 | Strontium nitrate | 5.1 |
| UN 1508 | Strontium perchlorate | 5.1 |
| UN 1509 | Strontium peroxide | 5.1 |