HazMat Tool — substance information
Selenium disulfide
HMT 15 June 2026Selenium disulfide
Selenium disulfide, also known as selenium sulfide, is a chemical compound and medication used to treat seborrheic dermatitis, dandruff, and pityriasis versicolor. It is applied to the affected area as a lotion or shampoo. Symptoms frequently return if treatment is stopped. Side effects may include hair discoloration, skin irritation, and risk of systemic absorption and toxicity, among others Wikipedia
Substance Data
Source: PubChemCAS-Number7488-56-4 |
Flash Pointn/a | Boiling Pointn/a |
| Emergency Response Guide No. 153 |
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 | 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.
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 3440 | Selenium compound, liquid, n.o.s | 6.1 |
| UN 3283 | Selenium compound, solid, n.o.s | 6.1 |
| UN 2194 | Selenium hexafluoride | 2.3 |
| Selenium nitride | Forbidden | |
| UN 2879 | Selenium oxychloride | 8 |