Hydrogen Sulfide
Extreme RiskCAS Number
7783-06-4
Formula
H₂S
Version
6.0
Revision Date
2024-12-08
Flammable Gas Cat. 1Gases Under PressureAcute Toxicity Cat. 2 (Inhalation)STOT SE Cat. 3Aquatic Acute Cat. 1
SECTIONS
1
Identification
Product Name
Hydrogen Sulfide
Product Code
HYDROGEN-SULFIDE
Recommended Use
Laboratory chemicals, Industrial applications
Restricted Use
Follow manufacturer guidelines
Manufacturer Details
Multiple Suppliers
Contact manufacturer for details
Phone: Contact manufacturer
Emergency: CHEMTREC: +1-800-424-9300
2
Hazard Identification
Danger
Classification:
• Flammable Gas Cat. 1
• Gases Under Pressure
• Acute Toxicity Cat. 2 (Inhalation)
• STOT SE Cat. 3
• Aquatic Acute Cat. 1
Hazard Statements:
H220 - Extremely flammable gas
H280 - Contains gas under pressure
H330 - Fatal if inhaled
H335 - May cause respiratory irritation
H400 - Very toxic to aquatic life
Precautionary Statements:
P210 - Keep away from heat/sparks/open flames
P260 - Do not breathe gas
P284 - Wear respiratory protection
P310 - Immediately call POISON CENTER
P273 - Avoid release to the environment
3
Composition/Information on Ingredients
Substance/Mixture
Substance
| Component | CAS Number | EC Number | Concentration | Classification |
|---|---|---|---|---|
| Hydrogen Sulfide | 7783-06-4 | 231-977-3 | 100% | Flammable Gas Cat. 1, Gases Under Pressure, Acute Toxicity Cat. 2 (Inhalation), STOT SE Cat. 3, Aquatic Acute Cat. 1 |
4
First Aid Measures
Inhalation:
IMMEDIATELY remove to fresh air. If not breathing, give artificial respiration. Administer 100% oxygen. Seek IMMEDIATE medical attention. May cause pulmonary edema - observe 72 hours.
Skin Contact:
Not applicable (gas)
Eye Contact:
Flush with water if irritation occurs.
Ingestion:
Not applicable (gas)
Most Important Symptoms:
Seek medical attention if symptoms persist.
5
Fire Fighting Measures
suitable Extinguishing:
Stop gas flow if safe. Use water spray to cool containers. CO2, dry chemical.
unsuitable Extinguishing:
Not applicable
specific Hazards:
Extremely flammable and toxic gas. Forms explosive mixtures with air. Heavier than air - accumulates in low areas.
protective Equipment:
6
Accidental Release Measures
personal Precautions:
Use personal protective equipment. Ensure adequate ventilation.
environmental Precautions:
Prevent further leakage. Do not allow to enter drains or water courses.
cleanup Methods:
Contain spillage with non-combustible absorbent material and place in container for disposal.
reference:
See Section 13 for disposal considerations.
7
Handling and Storage
handling:
Use H₂S monitors. NEVER rely on odor - olfactory fatigue occurs. Use only outdoors or in well-ventilated areas with proper respiratory protection.
storage:
incompatibilities:
8
Exposure Controls/Personal Protection
exposure Limits:
• {"type":"OSHA PEL","value":"20 ppm Ceiling, 50 ppm Peak (10 min)"}
• {"type":"ACGIH TLV","value":"1 ppm TWA, 5 ppm STEL"}
• {"type":"NIOSH REL","value":"10 ppm Ceiling"}
engineering:
Use explosion-proof equipment. Provide appropriate exhaust ventilation.
ppe:
respiratory:Use appropriate respirator when exposure limits are exceeded.
hand:Chemical-resistant gloves
eye:Safety glasses with side shields or chemical safety goggles
skin:Wear appropriate protective clothing
9
Physical and Chemical Properties
appearance:Colorless gas
odor:Strong rotten egg odor (warning: olfactory fatigue occurs at high concentrations)
p H:Not applicable
melting Point:-85°C (-121°F)
boiling Point:-60°C (-76°F)
flash Point:Flammable gas
vapor Pressure:Gas at normal conditions
vapor Density:1.19 (Air = 1)
density:1.54 g/L at 0°C
solubility:4 g/L at 20°C
molecular Weight:34.08 g/mol
10
Stability and Reactivity
reactivity:
See incompatible materials.
stability:
Stable under recommended storage conditions.
conditions To Avoid:
Heat, sparks, open flames.
incompatible Materials:
hazardous Decomposition:
Thermal decomposition may produce hazardous gases.
hazardous Polymerization:
Will not occur.
11
Toxicological Information
acute Toxicity:
oral:Not available
dermal:Not available
inhalation:444 ppm/4h (rat)
skin Corrosion:
See hazard classification.
eye Damage:
See hazard classification.
sensitization:
No data available
mutagenicity:
No data available
carcinogenicity:
Not classified as carcinogenic
reproductive Toxicity:
No data available
specific Target Organ:
See hazard statements.
aspiration Hazard:
No data available
12
Ecological Information
ecotoxicity:
May be harmful to aquatic organisms.
persistence:
No data available
bioaccumulation:
No data available
mobility:
No data available
other Effects:
Avoid release to the environment.
13
Disposal Considerations
waste:
Dispose of in accordance with local regulations.
contaminated:
Do not re-use empty containers.
waste Code:
Check with local authorities.
disposal:
Dispose of as hazardous waste at approved facility.
14
Transport Information
un Number:
UN 1053
shipping Name:
Hydrogen sulfide
hazard Class:
2.3 - Toxic Gas (2.1 - Flammable)
packing Group:
Not applicable
marine:
Check with carrier
special:
None
iata:
UN 1053, Hydrogen sulfide, 2.3 - Toxic Gas (2.1 - Flammable), Not applicable
imdg:
UN 1053, Hydrogen sulfide, 2.3 - Toxic Gas (2.1 - Flammable), Not applicable
15
Regulatory Information
sara313:
Check with regulatory requirements.
tsca:
Listed on TSCA inventory.
dscl:
Check local regulations.
reach:
Check EU REACH requirements.
california65:
Check California Prop 65 listing.
16
Other Information
nfpa:
health:2
fire:2
reactivity:0
special:
hmis:
health:2
flammability:2
physical:0
ppe:B
prepared:
Multiple Suppliers
phone:
Contact manufacturer
disclaimer:
The information provided in this Safety Data Sheet is correct to the best of our knowledge at the date of publication.