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Acetylferrocene is prepared by Friedel-Crafts acylation of ferrocene, usually with acetic anhydride (Ac 2 O): . Fe(C 5 H 5) 2 + Ac 2 O → (C 5 H 5)Fe(C 5 H 4 Ac) + HOAc. The experiment is often conducted in the instructional laboratory to illustrate acylation as well as chromatographic separations.
3 ⁄ 4-inch hose with 1-8 NH NFPA threads (NFPA 1963 requirement) 1-inch hose with 1-8 NH NFPA threads (NFPA 1963 requirement; a.k.a. "Chemical Hose Thread" and "Booster Hose Thread" [7]; the chemical hose thread term likely originates from its use on chemical fire engines, an early firefighting device used from 1872 until the 1930s that used ...
Guide for Substantiating a Fire Model for a Given Application [11] Guide for Peer Review in the Fire Protection Design Process [12] Performance-Based Fire Protection, 2nd Edition [13] Predicting Room of Origin Fire Hazards (Archived) [14] Guide for Fire Risk Assessment [15] Code Officials Guide to Performance-Based Design Review [16]
The association was founded in 1906 as the "Fire Marshals Association of North America," with the purpose of promoting fire safety and prevention tactics. [2] On October 9, 1911, the association, alongside the local insurance organization Western Insurance Union, [2] held the first "Fire Prevention Week" to commemorate the memory of the Great Chicago Fire forty years prior.
A fire retardant is a substance that is used to slow down or stop the spread of fire or reduce its intensity. This is commonly accomplished by chemical reactions that reduce the flammability of fuels or delay their combustion. [1] [2] Fire retardants may also cool the fuel through physical action or endothermic chemical reactions.
Code 1: A time critical case with a lights and sirens ambulance response. An example is a cardiac arrest or serious traffic accident. Code 2: An acute but non-time critical response. The ambulance does not use lights and sirens to respond. An example of this response code is a broken leg. Code 3: A non-urgent routine case. These include cases ...
Gaseous fire suppression, also called clean agent fire suppression, is the use of inert gases and chemical agents to extinguish a fire. These agents are governed by the National Fire Protection Association (NFPA) Standard for Clean Agent Fire Extinguishing Systems – NFPA 2001 in the US, with different standards and regulations elsewhere.
The azomethine derivative undergoes 1,3-cycloaddition to C 60. [6] It can be reduced to the corresponding alcohol with hydride reducing agents. [7] Asymmetric alkylation gives the chiral α-hydroxyethylferrocene. [8] Dioxane derivatives, obtainable from 1,3-diols and the aldehyde, sustain ortho lithiation. [9]