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Send EmailHydrogen, 1333-74-0
| Property | Detail |
|---|---|
| Chemical Name | Hydrogen |
| English Name | Hydrogen |
| Abbreviation | H₂ |
| Chemical Formula | H₂ |
| CAS No | 1333-74-0 |
| EC No | 215-605-7 |
| Molecular Weight | 2.016 g/mol |
| Appearance | Colorless gas |
| Odor | Odorless |
| Grade | Industrial Gas |
Hydrogen is a colorless, odorless, tasteless and extremely light gas. It is a fundamental industrial gas widely used in the chemical, petrochemical, energy, metallurgy and electronics industries. It is used in hydrogenation reactions, fuel cells and specialty process applications.
| Property | Value |
|---|---|
| Appearance | Colorless gas |
| Odor | Odorless |
| Chemical Formula | H₂ |
| CAS No | 1333-74-0 |
| Molecular Weight | 2.016 g/mol |
| Boiling Point | -252.9 °C |
| Melting Point | -259.2 °C |
| Gas Density (0°C, 1 atm) | 0.0899 kg/Nm³ |
| Relative Density (Air=1) | 0.07 |
| Water Solubility | Very low |
| Autoignition Temperature | 500–585 °C |
| Explosion Limits (in Air) | 4 – 75% |
| Flammability | Extremely flammable |
| Parameter | Specification |
|---|---|
| Hydrogen (H₂) | ≥ 99.9% |
| Oxygen (O₂) | ≤ 50 ppm |
| Nitrogen (N₂) | ≤ 500 ppm |
| Carbon Monoxide (CO) | ≤ 10 ppm |
| Carbon Dioxide (CO₂) | ≤ 10 ppm |
| Moisture (H₂O) | ≤ 10 ppm |
| Appearance | Colorless gas |
Higher purity grades (99.999% and above) are available for special applications.
| Parameter | Specification |
|---|---|
| H₂ Purity | ≥ 99.9% |
| O₂ Content | ≤ 50 ppm |
| N₂ Content | ≤ 500 ppm |
| CO Content | ≤ 10 ppm |
| CO₂ Content | ≤ 10 ppm |
| Moisture (H₂O) | ≤ 10 ppm |
| Water Solubility | Very low |
| Property | Value |
|---|---|
| Physical State | Gas |
| Color | Colorless |
| Odor | Odorless |
| Boiling Point | -252.9 °C |
| Melting Point | -259.2 °C |
| Gas Density (0°C, 1 atm) | 0.0899 kg/Nm³ |
| Relative Density (Air=1) | 0.07 |
| Autoignition Temperature | 500–585 °C |
| Explosion Limits (in Air) | 4 – 75% |
| Flammability | Extremely flammable |
| Sector | Use |
|---|---|
| Hydrogenation Processes | Vegetable oil hydrogenation, organic chemical synthesis, fine chemical production |
| Petrochemical and Refining | Hydrocracking, hydrodesulfurization, fuel upgrading processes |
| Energy Applications | Fuel cells, energy storage systems, green hydrogen projects |
| Metallurgy | Protective atmosphere applications, heat treatment processes, metal reduction processes |
| Electronics Industry | Semiconductor manufacturing, protective process gas, specialty atmosphere applications |
| Packaging Type | Description |
|---|---|
| Pressurized gas cylinders | 40 L / 50 L |
| Cylinder bundles (Bundle) | High-volume supply |
| ISO Tube Trailer | Bulk shipment |
| Bulk gas systems | Pipeline / on-site delivery |
| On-site production systems | On-site generation |
Store in well-ventilated areas.
Keep away from fire, sparks and hot surfaces.
Cylinders must be stored upright and secured.
Store separately from oxidizing gases.
Leak detection equipment must be checked regularly.
Recommended Storage Conditions: Dry, cool and well-ventilated areas
As a pressurized gas, under suitable storage conditions and in closed cylinders: 24 months (may vary depending on manufacturer specification)
Extremely flammable gas.
May form extensive explosive mixtures with air.
May cause oxygen deficiency in confined spaces.
Being colorless and odorless, leaks must be detected with special detectors.
Protective goggles
Safety shoes
Antistatic equipment
Appropriate respiratory equipment when required
| Exposure | Measure |
|---|---|
| Inhalation | Move to fresh air; seek medical attention if breathing is difficult |
| Skin Contact | Risk of cold burns from pressurized gas; rinse with plenty of water, seek medical attention |
| Eye Contact | Rinse with plenty of water for at least 15 minutes; seek medical attention |
| Ingestion | - (Gas) |
| Property | Value |
|---|---|
| Flammability | Extremely flammable gas |
| Suitable Extinguishing Media | Dry chemical, CO₂, water spray (gas source must be shut off) |
| Specific Hazards | May form extensive explosive mixtures with air; flame is nearly invisible |
| Protective Equipment | Self-contained breathing apparatus (SCBA) and full protective clothing should be used |
Wear personal protective equipment.
Remove ignition sources.
Shut off the gas leak source.
Ensure good ventilation.
Monitor the environment with gas detection devices.
Do not enter confined spaces.
| Property | Value |
|---|---|
| Stability | Stable under normal storage conditions |
| Hazardous Decomposition Products | - (Combustion product is water vapor) |
| Polymerization | Does not polymerize |
| Reactivity | Reacts violently with oxidizing agents; may react with metal catalysts |
Oxidizing gases (oxygen, chlorine, fluorine, etc.)
Fire and spark sources
Halogens
Hot surfaces
| Information | Value |
|---|---|
| Transport Class | Class 2.1 (Flammable Gas) |
| UN Number | UN 1049 (Hydrogen, compressed) |
| Packing Group | - |
| Transport Conditions | Pressurized gas cylinders must be transported in closed, well-ventilated vehicles; keep away from ignition sources; cylinders must be upright and secured |
| Subject | Statement |
|---|---|
| Intended Use | Industrial use (hydrogenation, petrochemical, energy, metallurgy, electronics) |
| Food Contact | Not suitable for direct food contact |
| REACH | Subject to applicable legislation; consult the SDS for exact information |
| Labeling | F+ (Extremely Flammable) hazard symbol; R12, R6 risk phrases |
| Parameter | Analysis Method |
|---|---|
| H₂ Purity | Gas Chromatography (GC) |
| Oxygen Determination | Gas Analyzer |
| Moisture Determination | Hygrometer |
| CO/CO₂ Determination | Gas Chromatography |
| Appearance | Visual Inspection |
A Certificate of Analysis (CoA) is issued for each batch.
Traceability is ensured by batch number.
Production and quality control activities are carried out in accordance with relevant quality management system principles.
| Property | Value |
|---|---|
| Product Name | Hydrogen |
| Abbreviation | H₂ |
| CAS No | 1333-74-0 |
| EC No | 215-605-7 |
| Chemical Formula | H₂ |
| Physical Form | Gas |
| Purity | ≥ 99.9% |
| Application Areas | Hydrogenation, energy applications |
Question 1: In what form is hydrogen supplied?
Answer: It is supplied in 40 L / 50 L pressurized gas cylinders, cylinder bundles, ISO tube trailers, bulk gas systems and on-site production systems.
Question 2: What are the main application areas of hydrogen?
Answer: Vegetable oil hydrogenation and organic synthesis, hydrocracking/hydrodesulfurization in petrochemicals and refining, fuel cells and energy storage, protective atmosphere/heat treatment in metallurgy and semiconductor manufacturing in electronics.
Question 3: What should be considered during storage?
Answer: It should be stored in well-ventilated areas, away from fire/sparks/hot surfaces, separately from oxidizing gases, with cylinders upright and secured.
Question 4: What is the most important safety risk?
Answer: It is extremely flammable and may form extensive explosive mixtures with air. Additionally, being colorless and odorless, leaks must be detected with special detectors; it may cause oxygen deficiency in confined spaces.
The information in this Technical Data Sheet is prepared to describe the typical properties of the product. The buyer is responsible for verifying the suitability of the product for its specific intended use and compliance with applicable legislation. Specifications may be updated without prior notice. Please contact the manufacturer/supplier for the current revision. Safety Data Sheet (SDS) is available upon request.