High-Purity Helium
WA：+86 132 6275 2056
WEB: std-coatings.com
Product Details
Product Names
Ultra-Pure Helium
High-Purity Helium
Helium
Purity
Ultra-Pure Helium: ≥99.9999%
High-Purity Helium: ≥99.999%
Impurity Content (ppm)
| Impurity | Ultra-Pure Helium | High-Purity Helium |
|---|---|---|
| Water (H₂O) | ≤0.5 | ≤3 |
| Oxygen (O₂+Ar) | ≤0.1 | ≤1 |
| Nitrogen (N₂) | ≤0.5 | ≤2 |
| Carbon Monoxide (CO) | ≤0.1 | ≤0.5 |
| Carbon Dioxide (CO₂) | ≤0.1 | ≤0.5 |
| Hydrocarbons (THC) | ≤0.1 | ≤0.5 |
Packaging
Filled in 40L, 49L, 50L steel cylinders, and also available in smaller cylinders of 8-10L upon customer request.
Applications
Helium is widely used in military, scientific research, petrochemical, refrigeration, medical, semiconductor, pipeline leak detection, superconductivity experiments, metal manufacturing, deep-sea diving, precision welding, and optoelectronic product manufacturing.
Safety Information
CAS Number: 7440-59-7.
Physical and Chemical Properties: Colorless and odorless inert gas. Insoluble in water and ethanol. Melting point (℃): -272.1; Boiling point (℃): -268.9; Relative density (water=1): 0.15 (-271℃); Relative density (air=1): 0.14; Saturation vapor pressure (kPa): 202.64 (-268℃); Flash point (℃): Not applicable; Combustion heat (kJ/mol): Not applicable; Critical temperature (℃): -267.9; Critical pressure (MPa): 2.3; Upper and Lower Explosion Limits (v%): Not applicable; Ignition temperature (℃): Not applicable.
Combustion and Explosion Hazards: Non-flammable. Under high heat, the pressure inside the container may increase, posing a risk of rupture and explosion.
Firefighting Methods: Non-flammable. Remove containers from the fire area if possible. Spray water to keep the containers cool until the fire is out. Evacuate people to the upwind side and isolate the contaminated area. Emergency personnel should wear self-contained positive pressure breathing apparatus and general work clothes. Cut off the leak source if possible. Ensure adequate ventilation to disperse the gas. Handle the leaking container properly, repair and inspect before reuse.
Health Hazards: Inert gas, high concentrations can reduce oxygen partial pressure and pose a risk of asphyxiation. Symptoms include increased breathing rate, lack of concentration, ataxia, followed by fatigue, restlessness, nausea, vomiting, coma, convulsions, and potentially death.
First Aid Measures: Inhalation: Quickly move to a fresh air area. Keep the airway clear. If breathing is difficult, administer oxygen. If breathing stops, perform artificial respiration immediately. If breathing and heartbeat stop, perform artificial respiration and external chest compressions immediately.
在线联系供应商
Other supplier products
 |
Automotive original powder coatings | Introduction 1. Market Shift: Driven by Environmental Compliance Under China’s “Dual Carbon” policy and global sustainabi... |
 |
Decorative powder coating series | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Introduction Product Overview This series of products includes epoxy, hybrid, poly... |
|
|
Outdoor tables and chairs powder coating | Characteristics of powder coatings “It does not contain toxic, solvent free, or volatile toxic substances, so it does not have toxic,”... |
 |
Polyester based powder coatings MT-620 AM | Getaquote whats/app：+86 132 6275 2056 WEB: std-coatings.com Product Description MT-620 AM is a series of polyester based powder coatings, formulate... |
 |
Hydroxylated acrylic dispersion STD 2042 | Product Description Hydroxylated acrylic dispersion STD 2042 is a hydroxyfunctional polyacrylic dispersion designed for vehicle,machinery and anti... |
Same products
 |
Core Drill Bits For Stone | 卖方: Hebei XMF Tools Group Co., Ltd | Our Core Drill Bits for Stoneare designed for professional cutting and drilling of granite, marbl... |
 |
Uphone L181 4G Rugged PoC Radio Entry Level IP68 | 卖方: Shenzhen Tianlong Century Technology Development CO., LTD | Uphone L181 4G Rugged PoC Radio Entry Level IP68 Uphone L181 4G Rugged PoC Radio – Entry-L... |
 |
Hot Melt Adhesive for Vacuum Insulation Panels | 卖方: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Vacuum Insulation Panels Supply & Technical Support Capabilities ... |
 |
Hot Melt Adhesive for Packaging | 卖方: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Packaging Bond Strength & Durability: Hot melt adhesives provide i... |
 |
Hot Melt Adhesive for Hygiene Products | 卖方: Foshan Rurga New Material Technology Co. ,Ltd | Hot Melt Adhesive for Hygiene Products refers to thermoplastic pressure‑sensitive adhesives ... |
