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Hydrogen Sulfide CAS NO 13940-21-1
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CAS No.:13940-21-1
Grade:Pharmacy Grade
Content:99.9%
Brand:Customizable
Packaging:Customizable
Description
Hydrogen Sulfide is a highly toxic, flammable, and corrosive gas with a characteristic odor of rotten eggs. Its unique chemical properties make it a critical reagent and intermediate in various industrial chemical synthesis and analytical processes. This product is essential for industries including chemical manufacturing, metallurgy, and environmental testing, where precise control and high purity are paramount for safety and process integrity.
Application
- Chemical Synthesis: As a key reagent in the production of inorganic sulfides, thiophenes, and other organosulfur compounds.
- Metallurgical Processing: Used in the precipitation and separation of metal ions, particularly in analytical chemistry and ore processing.
- Analytical Chemistry: Employed as a standard gas for calibrating detection equipment and in qualitative inorganic analysis for metal identification.
- Laboratory Research: Serves as a reducing agent and sulfur source in various experimental and R&D settings.
- Petrochemical Industry: Used in small-scale pilot studies and catalyst poisoning research related to sour gas treatment.
- Wastewater Treatment: Applied in controlled studies for the biological sulfate reduction process.
Basic Information
| Product Name | Hydrogen Sulfide |
| CAS No. | 13940-21-1 |
| Molecular Formula | H₂S |
| Molecular Weight | 34.08 g/mol |
| Synonyms | Hydrogen sulphide; Sulfane; Sulfurated hydrogen; Dihydrogen monosulfide; Dihydrogen sulfide; Sewer gas; Stink damp; Sulfur hydride; Hepatic gas; Hydrosulfuric acid; Sour gas |
| EINECS | 231-977-3 |
Quality Control
Our Hydrogen Sulfide is produced and handled under stringent safety and quality protocols to ensure consistency and reliability. We provide detailed Certificates of Analysis (COA) for each batch, verifying key parameters such as purity and impurity profiles. Our quality management system is designed to meet the rigorous demands of industrial and research applications, ensuring supply chain integrity.
Storage
Preserve in a tightly closed, approved specialty gas cylinder, stored in a cool, well-ventilated area away from direct sunlight, heat sources, and incompatible materials. Due to its highly volatile and gaseous nature, cylinders must be secured upright. Storage areas must comply with all local and international regulations for toxic and flammable gases. Full safety data and handling instructions are provided with shipment.
Specification
| Item | Specification |
|---|---|
| Appearance | Colorless Gas |
| Odor | Characteristic of Rotten Eggs |
| Assay (H₂S) | ≥ 99.5% |
| Water (H₂O) | ≤ 100 ppm |
| Oxygen (O₂) | ≤ 50 ppm |
| Nitrogen (N₂) | ≤ 0.3% |
| Carbon Dioxide (CO₂) | ≤ 50 ppm |
| Hydrocarbons (as CH₄) | ≤ 50 ppm |
Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.
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Why choose US
Trusted Manufacturer
With our own production facilities, we ensure consistent quality, reliable supply, and full traceability.
Rigorous Quality Assurance
Each batch undergoes strict QC, accompanied by COA, MSDS, and full compliance with international standards.
Advanced R&D Expertise
Our in-house lab drives process innovation, new product development, and tailored synthesis solutions.


