Users' questions

What is the propellant in aerosol cans?

What is the propellant in aerosol cans?

In most cases, the propellant also acts as a solvent to keep the product at the proper strength. In the United States, the most common propellants are naturally occurring hydrocarbons. A few products, about 10% of today’s aerosols, use compressed gases like carbon dioxide and nitrous oxide as propellants.

Is propellant in an aerosol can matter?

Since the propellant exists in liquid form in the can, it should be miscible with the payload or dissolved in the payload. In gas dusters and freeze sprays, the propellant itself acts as the payload. The propellant in a gas duster can is not “compressed air” as sometimes assumed, but usually a haloalkane.

Are the examples of aerosol propellant?

Types of propellants commonly used in pharmaceutical aerosols include chlorofluorocarbons, fluorocarbons (trichloromonofluoromethane, dichlorodifluoromethane), hydrocarbons (propane, butane, isobutane), hydrochlorofluorocarbons and hydrofluorocarbons, inert gases (nitrogen, NO2, CO2) and compressed gases (Alston et al. …

What is pharmaceutical propellant?

A propellant is a chemical with a vapor pressure greater than atmospheric pressure at 40°C (105°F). Types of propellants commonly used in pharmaceutical aerosols include chlorofluorocarbons, hydrocarbons, hydrochlorofluorocarbons and hydrofluorocarbons, and compressed gases.

What kind of aerosol propellant is DuPont dymel 134a?

DuPont Dymel 134a propellant is nonflammable. It can be mixed with other propellants to produce a limited range of nonflammable blends or to reduce the flammability of other aerosol formulations.

What should I know about using DME as a propellant?

As it comes to DME as the propellant gas, it needs to take precautions against the corrosion of the package with the water and DME. So, the water has to be deionized. And if possible, vacuum sucks the air in the can top space. Adjust the product PH value at 7~10. Add anti-corrosion agent like sodium benzoate. 2. Safety DME is a flammable gas.

What are the uses of isobutane and dymel?

Isobutane is used as a feedstock in the petrochemical industry. DuPont Dymel A propellant is used in applications where solubililty in water is important, such as hair spray, deodorants and other personal care items, as well as household aerosols such as air fresheners and paints.

What are the disadvantages of using aerosols?

Large gas reserve in aerosols, good solubility in most products, low internal pressure of 2.5 bars so that lower-cost 12-bar cans can be used. Extremely low active product/propellant ratio. Disadvantages: Flash point -58°C, extremely flammable. Declared Volatile Organic Compound (VOC). Storage in limited quantities.