MG Chemicals 402A, Super Duster 134, Aerosol, 285g/450g, Case of 10
MG Chemicals 402A — Super Duster 134, HFC 134a Non-Flammable Aerosol Duster, Case of 10
Hazardous material — available in USA & Canada only. Must ship Ground.
MG Chemicals 402A Super Duster 134 is a pure, non-flammable aerosol duster containing 1,1,1,2-tetrafluoroethane (HFC 134a). It delivers a constant, high-pressure dry gas jet that is chemically inert and low-residue, making it safe for use on live electronic and electrical equipment. Ideal for removing lint, dust, and debris from PCBs, computers, heat sinks, fans, and lab equipment without risk of damage or static discharge. Available in 285g (236mL) and 450g (373mL) aerosol cans, sold in cases of 10.
Key Specifications
| Specification | Value |
|---|---|
| Part Number (285g) | 402A-285G |
| Part Number (450g) | 402A-450G |
| Active Ingredient | 1,1,1,2-Tetrafluoroethane (HFC 134a) |
| Net Weight (285g) | 285g / 236mL |
| Net Weight (450g) | 450g / 373mL |
| Packaging | Aerosol can |
| Case Quantity | 10 cans per case |
| Flammable | No — non-flammable |
| Residue | Low residue |
| Safe on Live Equipment | Yes |
| Shipping Restriction | Ground only — USA & Canada only |
| Brand | MG Chemicals |
Applications
- Cleaning energized PCBs, electronics boards, and systems
- Removing dust from computer equipment while in use
- Cleaning heat sinks and fans to prevent overheating
- Lab equipment and instrument cleaning
- Ventilation system dust removal
Frequently Asked Questions
Is MG Chemicals 402A safe to use on live/powered electronics?
Yes — the 402A uses pure HFC 134a, which is chemically inert, non-flammable, and non-conductive. It is safe for use on energized PCBs, live electrical equipment, and computers while in operation. The dry gas jet leaves no conductive residue that could cause shorts or damage.
What is HFC 134a and is it safe?
HFC 134a (1,1,1,2-tetrafluoroethane) is a hydrofluorocarbon refrigerant gas used as a propellant in non-flammable aerosol dusters. It is non-toxic at normal use concentrations, non-flammable, and leaves no residue. It does not contain ozone-depleting substances (ODS). Always use in a well-ventilated area and avoid inhaling concentrated vapors.
Why does the 402A have to ship Ground only?
HFC 134a is classified as a hazardous material (compressed gas) and cannot be shipped by air. It must ship via ground transportation within the USA and Canada only. International shipments are not available for this product.
What is the difference between the 402A-285G and 402A-450G?
Both contain the same pure HFC 134a formula. The 402A-285G is a 285g (236mL) can and the 402A-450G is a larger 450g (373mL) can. The 450g size provides approximately 58% more product per can and is the better value for high-volume cleaning applications. Both are sold in cases of 10.
Can the 402A be used upside down?
HFC 134a dusters can typically be used in any orientation including inverted, which delivers a liquid spray for targeted cleaning. However, using inverted for extended periods can cause frosting on sensitive components. Refer to the MG Chemicals TDS for specific usage guidance.
