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Product Strengths
- High Purity: Ranging from high purity (99.999%) to ultra-high purity (99.9999%).
- Comprehensive Product Portfolio: Specializing in helium, our offerings span civilian applications (e.g., balloons), industrial high-purity cylinder helium, tube-trailer helium, and liquid helium.
- Stable Supply & Flexible Delivery: Ensured by robust logistics and production capabilities.
- Premium Service: Supported by a professional filling team and an experienced overseas business team.
Product Specifications
- CAS Number: 7440-59-7
- UN Number: 1963
- EINECS Number: 231-168-5
- Molecular Weight: 4.0026
- Appearance: Colorless, odorless gas
- Melting Point: -272.2 °C
- Boiling Point: -268.60 °C
- Density: 0.1786 kg/cm³
- DOT Class: 2.2 (Non-flammable Gas)
- Label: Non-flammable Gas
| High purity helium | Ultra-high purity helium | |
| Specification | 99.999% | 99.9999% |
| N2 | ≤ 2.0 ppm | ≤ 0.5 ppm |
| O2+Ar | ≤ 1.0 ppm | ≤ 0.2 ppm |
| H2 | ≤ 1.0 ppm | / |
| CO | ≤ 0.5 ppm | ≤ 0.1 ppm |
| CO2 | ≤ 0.5 ppm | ≤ 0.1 ppm |
| Ne | ≤ 1.0 ppm | / |
| CH4 | ≤ 0.5 ppm | ≤ 0.1 ppm |
| H2O | ≤ 0.5 ppm | ≤ 0.2 ppm |
Packaging Specifications：
| Cylinder Specifications | Content | Pressure | ||
| Cylinder Capacity | valve | volume | Bar | PSIG |
| 40L | CGA580 | 5 m3 | 150 | 2175 |
| 47L | CGA580 | 7 m3 | 150 | 2175 |
| 50L | CGA580 | 10 m3 | 200 | 2900 |
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