Have a question about Solstice Propellant? Check our FAQs here. If it’s not listed, please visit our Contact Us page to submit your question.

What kinds of aerosols is Solstice Propellant being used in?

Solstice Propellant is currently being used in some novelty aerosols, OTC sprays, sunscreens, insect sprays, dusters and freeze sprays, and at least one insect spray. It is being evaluated in contact cleaners, mold releases, personal care products, household products and spray paints.

Is it a drop-in replacement for 134a?

Solstice Propellant can be used in most products that currently use 134a. The major difference between the two is that Solstice Propellant has a lower vapor pressure than 134a. This might make it necessary to reformulate some aerosol products.

Can I blend Solstice Propellant with other propellants?

Solstice Propellant mixes with 134a, 152a, DME and the hydrocarbon propellants. It also mixes with commonly used solvents like alcohols, ketones and hydrocarbon solvents.

Is Solstice Propellant compatible with aerosol cans and valves?

We have found Solstice Propellant to be compatible with tinplate steel aerosol cans, aluminum cans and many aerosol valves. However, it is always advisable to confirm the compatibility of a new propellant with your specific packaging components prior to filling cans for commercial distribution.

Solstice Propellant has a very short atmospheric lifetime. Does that mean it’s unstable?

No. The reactions that cause Solstice Propellant to breakdown in the atmosphere do not occur under normal storage and use conditions. Solstice Propellant has been shown to have a high degree of thermal and hydrolytic stability. We have demonstrated long-term storage stability in storage containers, cylinders and aerosol cans.

What is the regulatory approval status for Solstice Propellant?

Solstice Propellant has been added to the U.S. EPA TSCA inventory. It has also been added to EPA’s SNAP list of acceptable substitutes for ozone-depleting substances in aerosols and other applications. Solstice Propellant is registered in Europe under REACH, in Japan, China, Canada, Australia and South Korea. Registrations are in progress in New Zealand.

What is the OEL?

The American Industrial Hygiene Association has set a Workplace Environmental Exposure Level (WEEL) of 800 PPM for Solstice Propellant.

Is the product commercially available?

Solstice Propellant is commercially available. It is being supplied from Honeywell’s Baton Rouge, LA facility.

Will the product be considered a Volatile Organic Compound?

In the U.S., classification of chemicals as VOCs or non-VOCs is based on photochemical reactivity. Solstice Propellant has a very low photochemical reactivity and is classified as a non-VOC by the U.S. EPA. In other regions different definitions are used and Solstice Propellant may be classified as a VOC. In the EU, for example, the determination is based on structure and vapor pressure with no consideration of reactivity.

Is Solstice Propellant flammable?

Solstice Propellant is a UN class 2.2 nonflammable liquefied gas.

Is it miscible with other propellants and solvents?

Solstice Propellant is miscible with all of the other liquefied gas propellants (HFCs, hydrocarbons and DME). It is also miscible with commonly-used solvents like the lower alcohols, ketones, hydrocarbons and chlorinated solvents.

Does it harm the Ozone layer?


Is its use approved in Switzerland?

Yes. Pure Solstice Propellant and Solstice Propellant-based aerosols can be imported into Switzerland.