HazMat Tool — substance information
Reference only — not a shipping paper, placard mandate, or CVI record.
Strontium arsenite
HMT 15 June 2026Strontium arsenite
Strontium is a chemical element; it has symbol Sr and atomic number 38. An alkaline earth metal, it is a soft silver-white yellowish metallic element that is highly chemically reactive. The metal forms a dark oxide layer when it is exposed to air. Strontium has physical and chemical properties similar to those of its two vertical neighbors in the periodic table, calcium and barium Wikipedia
| Emergency Response Guide No. 151 |
Hazardous Materials Table
Source: 49 CFR §172 (15 June 2026)(3) Hazard class6.1Poisonous Material |
(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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| IB8 | |
|---|---|
| IP2 | |
| IP4 | |
| T3 | |
| TP33 |
(8) Packing Authorizations (§173.***) 
| (8A) Exceptions | 153 | see 49 CFR §173.153 |
|---|---|---|
| (8B) Non-bulk | 212 | see 49 CFR §173.212 |
| (8C) Bulk | 242 | see 49 CFR §173.242 |
(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.
Note: The HMR prohibit only those Division 6.1 liquids that meet the definition of a Packing Group (PG) I and Hazard Zone A. See special provision 1 and PHMSA Interpretation #09-0252.
Packages with POISON or POISON INHALATION HAZARD labels, or a POISON label displaying “PG III,” or “PG III” marked next to a POISON label may not be transported with foodstuffs, feed or any other edible material, intended for humans or animals. For exceptions see 49 CFR §177.841(e).
Scope & sources (important)Click to show CFR references
This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):
- §177.834 - General requirements
- §177.835 - Class 1 materials
- §177.837 - Class 3 materials
- §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
- §177.839 - Class 8 (corrosive) materials
- §177.840 - Class 2 (gases) materials
- §177.841 - Division 6.1 and Division 2.3 materials
- §177.842 - Class 7 (radioactive) material
- §177.843 - Contamination of vehicles
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|---|---|
| UN 1506 | Strontium chlorate | 5.1 |
| UN 1507 | Strontium nitrate | 5.1 |
| UN 1508 | Strontium perchlorate | 5.1 |
| UN 1509 | Strontium peroxide | 5.1 |
| UN 2013 | Strontium phosphide | 4.3 |