High-purity helium for balloons, leak detection, and laboratory use.
Helium is the lightest inert noble gas — colourless, odourless, non-flammable, and chemically unreactive. Because the helium molecule is so small, it diffuses through most materials and requires specialised brass valves and regulators rated for helium service. APAC Gas supplies high-purity helium in G-size cylinders for leak detection, balloons and events, laboratory and medical applications, and helium-rich TIG welding blends for thick aluminium.
| Chemical Formula | He |
| Purity | 99.99% |
| Cylinder Pressure | 190 bar |
| Outlet Connection | AS 2473 Type 10 |
| UN Number | UN1046 |
All cylinders comply with Australian Standards. Dimensions are approximate.
Helium is supplied exclusively in G-size cylinders.
CLASSIFIED AS HAZARDOUS ACCORDING TO SAFE WORK AUSTRALIA CRITERIA.
Asphyxiant. Effects are proportional to oxygen displacement.
| Ingredient | CAS Number | EC Number | Content |
|---|---|---|---|
| Helium | 7440-59-7 | 231-168-5 | >99.99% |
In high concentrations may cause asphyxiation. Symptoms may include loss of mobility / consciousness. Victim may not be aware of asphyxiation.
Treat symptomatically.
Use water fog to cool containers from protected area.
Non flammable.
Temperatures in a fire may cause cylinders to rupture. Cool cylinders or containers exposed to fire by applying water from a protected location. Remove cool cylinders from the path of the fire. Evacuate the area if unable to keep cylinders cool. Do not approach cylinders or containers suspected of being hot.
If the cylinder is leaking, evacuate area of personnel. Inform manufacturer/supplier of leak. Use Personal Protective Equipment (PPE) as detailed in Section 8 of the SDS.
Prevent from entering sewers, basements and workpits, or any place where its accumulation can be dangerous.
Carefully move material to a well ventilated remote area, then allow to discharge if safe to do so. Do not attempt to repair leaking valve or cylinder safety devices.
See Sections 8 and 13 for exposure controls and disposal.
Use of safe work practices are recommended to avoid inhalation. Do not drag, drop, slide or roll cylinders. The uncontrolled release of a gas under pressure may cause physical harm. Use a suitable hand truck for cylinder movement.
Cylinders should be stored below 65°C in a secure area, upright and restrained to prevent cylinders from falling. Cylinders should also be stored in a dry, well ventilated area constructed of non-combustible material with firm level floor (preferably concrete), away from areas of heavy traffic and emergency exits.
No information provided.
| Ingredient | Reference | TWA | STEL | ||
|---|---|---|---|---|---|
| ppm | mg/m³ | ppm | mg/m³ | ||
| Helium | SWA [AUS] | Asphyxiant | |||
No biological limit values have been entered for this product.
| Appearance | Colourless gas |
|---|---|
| Odour | Odourless |
| Flammability | Non flammable |
| Flash point | Not relevant |
| Boiling point | −269°C |
| Melting point | −272°C |
| Evaporation rate | Not available |
| pH | Not available |
| Vapour density | Not available |
| Solubility (water) | Insoluble |
| Vapour pressure | Not available |
| Upper explosion limit | Not relevant |
| Lower explosion limit | Not relevant |
| Partition coefficient | Not available |
| Autoignition temperature | Not available |
| Decomposition temperature | Not available |
| Viscosity | Not available |
| Explosive properties | Not available |
| Oxidising properties | Not available |
| Odour threshold | Not available |
Carefully review all information provided in sections 10.2 to 10.6.
Stable under recommended conditions of storage.
Polymerization will not occur.
Avoid shock, friction, heavy impact, heat, sparks, open flames and other ignition sources.
Compatible with most commonly used materials.
May evolve toxic gases if heated to decomposition.
No ecological damage caused by this product.
The product is expected to biodegrade and is not expected to persist for long periods in an aquatic environment.
This product does not bioaccumulate.
The substance is a gas, not applicable.
No information provided.
CLASSIFIED AS A DANGEROUS GOOD BY THE CRITERIA OF THE ADG CODE.
| Land Transport (ADG) | Sea Transport (IMDG / IMO) | Air Transport (IATA / ICAO) | |
|---|---|---|---|
| 14.1 UN Number | 1046 | 1046 | 1046 |
| 14.2 Proper Shipping Name | HELIUM, COMPRESSED | HELIUM, COMPRESSED | HELIUM, COMPRESSED |
| 14.3 Transport hazard class | 2.2 | 2.2 | 2.2 |
| 14.4 Packing Group | None allocated. | None allocated. | None allocated. |
| 14.5 Environmental hazards | No information provided. | ||
The storage of significant quantities of gas cylinders must comply with AS4332 The storage and handling of gases in cylinders.
Application method: Gas regulator of suitable pressure and flow rating fitted to cylinder or manifold with low pressure gas distribution to equipment.
The recommendation for protective equipment contained within this report is provided as a guide only. Factors such as form of product, method of application, working environment, quantity used, product concentration and the availability of engineering controls should be considered before final selection of personal protective equipment is made.
It should be noted that the effects from exposure to this product will depend on several factors including: form of product; frequency and duration of use; quantity used; effectiveness of control measures; protective equipment used and method of application. Given that it is impractical to prepare a report which would encompass all possible scenarios, it is anticipated that users will assess the risks and apply control methods where appropriate.
[ End of SDS ]
This summary is sourced from the APAC Gas Helium Safety Data Sheet (No. 051). For the authoritative document, download the full PDF.
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