1,1,1,2-Tetrafluoroethane - Wikipedia
1,1,1,2-Tetrafluoroethane (also known as norflurane (INN), R-134a, Klea 134a, Freon 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC …
四氟乙烷_百度百科
R-134a作为使用最广泛的中低温环保制冷剂，由于 HFC -134a 良好的综合性能，使其成为一种非常有效和安全的 CFC -12的 替代品，主要应用于在使用R-12（R12 、 氟利昂 12、F-12 …
Acute safety of the CFC-free propellant HFA-134a from a
This study shows that acute inhalation of HFA-134a in a CFC-free system is as safe as a CFC propellant system. Salbutamol sulphate in the CFC-free system can be delivered in a dose …
An overview of the toxicology of HFA-134a (1,1,1,2 ... - PubMed
1. This paper reviews the results of preclinical toxicology studies on HFA-134a carried out by Glaxo Research and Development Ltd. 2. A comprehensive range of studies was conducted in …
1,1,1,2-四氟乙烷 - 维基百科，自由的百科全书
1,1,1,2-四氟乙烷，别名 R-134a，化学式为 C H 2 F C F 3，大气压下的 沸点 为−26.3°C。 是一种热力学性质与 二氟二氯甲烷 （R-12）类似的 卤代烷 制冷剂，但与R-12相比，它的 臭氧破坏 …
药用辅料四氟乙烷（HFA-134a）介绍及用途详解 - 百家号
2025年2月26日 · 四氟乙烷，作为一种重要的药用辅料，在医药领域发挥着广泛的作用。 它不仅是CFCs喷射剂的理想替代品，还可用于多种MDIs（定量吸入气雾剂）的制备。 这些MDIs在治 …
氢氟烷烃 134a_药用辅料数据库_药智数据
四氟乙烷是氟氢烷（HFC或HFA）类气雾抛射剂（含有氢、氟、碳），与氟利昂CFC（含有氯、氟、碳）不同。 分子中没有氯而存在氢，减少了对臭氧层的损耗。
The Disposition of a New Drug Propellant (HFA 134a) in
HFA 134a (1,1,1,2-tetrafluoroethane) is a ‘non-ozone depleting’ candidate for use as a drug propellant in multi-dose inhalers (MDIs). A means for assuring the safety of such a compound …
Acute, repeated inhalation toxicity, respiratory system irritation, …
HFC-134 is the main impurity of HFA-134a. In order to verify the rationality of HFC-134 limits in HFA-134a and ensure the safety of HFA-134a as propellant in pharmaceutical metered-dose …
CID 23168738 | C4H4F8 | CID 23168738 - PubChem
2021年5月7日 · CID 23168738 | C4H4F8 | CID 23168738 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, …