Examples of 'hydrofluoroalkane' in a sentence
Meaning of "hydrofluoroalkane"
Hydrofluoroalkane is a type of propellant used in inhalers and aerosol products
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- Any of various gaseous alkanes that contain carbon, fluorine, and hydrogen and are used especially as aerosol propellants in metered-dose inhalers.
How to use "hydrofluoroalkane" in a sentence
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hydrofluoroalkane
The hydrofluoroalkane is present as propellent gas.
A significant reduction in the degradation of the hydrofluoroalkane was observed.
Hydrofluoroalkane essentially devoid of hydrogen fluoride can thus be obtained.
Beclomethasone dipropionate and hydrofluoroalkane.
The hydrofluoroalkane according to the invention can preferably be used for pharmaceutical applications.
Purification process for a hydrofluoroalkane.
HFA is an abbreviation for hydrofluoroalkane and HFO is an abbreviation for hydrofluoroolefin.
Process for separation of a mixture comprising at least one hydrofluoroalkane.
A well known conventional purification process for hydrofluoroalkane consists of a separation by distillation in several steps.
The process according to the invention applies to any hydrofluoroalkane.
In an alternative form, the hydrofluoroalkane is a purified hydrofluoroalkane.
It is particularly preferred that the or each desired compound is a hydrofluoroalkane.
The hydrofluoroalkane is subjected to a chromatography operation and ;.
Preferably the propellant is a hydrofluoroalkane.
Purification of the crude hydrofluoroalkane in order to obtain a purified hydrofluoroalkane ;.
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The organic compound is preferably a chlorinated or chlorofluorinated precursor of the hydrofluoroalkane.
A process for producing a hydrofluoroalkane comprising,.
The present invention relates to an improved purification process for a hydrofluoroalkane.
Formulations of salmeterol xinafoate in hydrofluoroalkane propellant will typically deliver 25 ug drug per actuation.
The present invention relates to stabilized compositions comprising at least one hydrofluoroalkane.
Or a pharmaceutically acceptable salt thereof, a liquefied hydrofluoroalkane and a medium-chain fatty acid triglyceride.
The use as claimed in any preceding claim in which the propellant is a hydrofluoroalkane.
The essentially pure hydrofluoroalkane is collected at the top of the distillation ( 20 ).
The propellant may be a hydrofluoroalkane.
Typically, the hydrofluoroalkane to be purified contains not more than 10 % by weight of organic impurities.
Method of manufacture of a hydrofluoroalkane.
Stabilized hydrofluoroalkane according to anyone of Claims 9 to 10, comprising iron compounds.
The latter compound is among reagents used in a synthesis of a hydrofluoroalkane by hydrofluorination.
Preferably, the hydrofluoroalkane comprises 3 or 4 carbon atoms.
Compositions according to the invention can consist essentially of the hydrofluoroalkane and stabilizing agent.
Formulations of salbutamol sulphate in hydrofluoroalkane propellant will typically deliver 100 µg drug per actuation.
The apparatus as claimed in any preceding claim wherein the composition comprises a hydrofluoroalkane propellant.
No degradation of the hydrofluoroalkane HFC-365mfc was observed.
More preferably, the microspheres are dispersed in a hydrofluoroalkane propellant.
The hydrofluoroalkane liquid in the composition is preferably selected from hydrofluoroalkane 227 and134a.
Use according to claim 6 wherein the propellant is a hydrofluoroalkane.
The hydrofluoroalkane comprising organic impurities is introduced via route ( 1 ) into a first distillation column ( 2 ).
A formulation according to claim 6 wherein said propellant is an hydrofluoroalkane.
The process according to claim 1, wherein the hydrofluoroalkane comprises from 3 to 6 carbon atoms.
In general, the hydrogen fluoride is in excess relative to the hydrofluoroalkane.
The process according to claim 1, in which the hydrofluoroalkane comprises from 3 to 6 carbon atoms.
A method according to claim 4, wherein said hydrogenated derivative of said olefin is a hydrofluoroalkane.
In this alternative form, the process for the manufacture of a hydrofluoroalkane often comprises a purification stage.
The composition may additionally include a propellant, such as a hydrofluorocarbon, preferably a hydrofluoroalkane.
The formulation also contains a hydrofluoroalkane ( HFA ) propellant.
An aerosol formulation as claimed in Claim 3, in which the propellant is a hydrofluoroalkane.
Stabilized hydrofluoroalkane containing from 1 to 500 mg / kg of a Lewis base.
In this regard, compatible propellents may generally comprise hydrofluoroalkane propellants.
A new type of propellant, hydrofluoroalkane HFA, has now been in use for 15 years.
Since then, the number of new drugs and inhalers has increased, and hydrofluoroalkane has emerged.
