Results 151 to 160 of about 292,660 (226)

Aerosol Propellants: Cardiac Toxicity

JAMA: The Journal of the American Medical Association, 1974
To the Editor.— The purpose of this letter is to add some important statements to my letter to the editor (227:658, 1974). Some of the most interesting and yet ignored evidence to support the possible link between the sudden death of sensitive asthmatic patients and the cardiac toxicity of the propellants could be found in the work of Dollery et al 1
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Aerosol propellant interference with clinical mass spectrometers

Journal of Clinical Monitoring, 1991
Metered dose inhalers containing halogenated propellants may interfere with mass spectrometer quantitation of halogenated inhalation anesthetics. We identify the propellant(s) in a commercially available metered dose inhaler that caused erroneous mass spectrometer readings.
E D, Kharasch, M, Sivarajan
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Propellant-Driven Aerosols of Proteins

Aerosol Science and Technology, 1996
ABSTRACT The protein bovine gammaglobulin was combined with surfactants, suspended in dimethylether propellant, and delivered through metered-dose aerosol valves to produce small particle aerosols of protein. A fraction of the protein particles was of respirable size (≤ 4 μm aerodynamic diameter) as determined by cyclone or impactor aerosol sampling ...
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Aerosol Propellant Abuse and Toxicity

Canadian Society of Forensic Science Journal, 1975
ABSTRACTSince the early 1960's, volatile solvent abuse has become epidemic among American teenagers. Recently aerosols have become the major products of abuse. Common propellents in aerosols are the fluorocarbons: trichlorofluoromethane (FC11), dichlorodifluoromethane (FC 12) and dichlorotetrafluoroethane (FC 114).Initial studies indicated that these ...
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The Effect of Halocarbon Aerosol Propellents on Bacteria

Journal of Applied Bacteriology, 1971
SUMMARY: The survival of Escherichia coli and spores of Bacillus subtilis var. niger and B.
R J, Stretton, W R, Gretton, J, Watson-Walker   +2 more
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Tetrafluoroethane (RFC 134A) Propellant-Driven Aerosols of Proteins

Pharmaceutical Research, 1997
Develop metered-dose propellant-driven aerosols of proteins using tetrafluoroethane (HFC 134A) as propellant.Proteins were lyophilized with the propellant-soluble surfactants Triton X-100, Triton X-405, Laureth-9, Brij-30, Nonidet-40, and diethylene glycol monoethylether and then charged with propellants.Small particle aerosols of the experimental ...
A R, Brown, D W, George
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Fluorocarbon Aerosol Propellents IX: Adsorption on Activated Charcoal

Journal of Pharmaceutical Sciences, 1976
The adsorption of three commonly used fluorocarbons, trichloromonofluoromethane, dichlorodifluoromethane, and dichlorotetrafluoroethane, on activated charcoal was studied at 25 degrees. The adsorption versus pressure plots are consistent with the Brunauer, Emmett, and Teller (BET) type II and type IV isotherms, which can be explained as the ...
K, Chang, W L, Chiou
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Gas chromatographic analysis of aerosol propellants

Journal of Chemical Education, 1977
A simple procedure for the qualitative analysis of commercial propellants by gas chromatography.
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Materials Compatibility Considerations for the Transition to Low Global Warming Potential Propellants for Pressurized Metered Dose Inhalers

AAPS PharmSciTech
Pressurized metered dose inhalers (pMDI) are a vital therapy for the treatment of lung diseases such as asthma and chronic obstructive pulmonary disease (COPD).
Dan Dohmeier, Atish Sen, A. Cavecchi, J. Matos, Richard Lostritto, Lee Nagao   +5 more
semanticscholar   +1 more source

New Propellant System Devised For Aerosol Packaging

Chemical & Engineering News Archive, 1992
Polygas may soon become, if not a household word, a part of many household products. Polygas is the Scottish inventor's tradename of what he claims is "a new generation aerosol propellant." It is based on Polygas liquid—a mixture of carbon dioxide dissolved in an acetone "carrier"—absorbed under pressure by a microporous polymer pellet.
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