Hydrogen chloride, anhydrous cylinders

Hydrogen chloride, anhydrous, HC1 [1, 454, before Hydrogen cyanide]. Mol. wt. 36.46. Supplied in cylinders see Gases inert and reagent, this volume. 

It is well known that anhydrous nonoxidizing inorganic acids such as hydrogen chloride and hydrogen bromide do not dissolve metals. These two compounds are stored in steel cylinders without any appreciable corrosion of the metal. The same was true of anhydrous hydrogen fluoride that was stored and delivered in steel cylinders for the past seven decades. 

DISPOSAL AND STORAGE METHODS dilute with the addition of ice water quench or neutralize with chemically basic substance such as lime or soda ash route to sewage plant store in a cool, dry place isolate from strong oxidizers, most metals, organic materials, and alkalies, aqueous solutions should be stored in glass bottles and in rubber-line tankers store anhydrous hydrogen chloride in steel cylinders. 

The popular name of ton containers, or ton multi-unit tanks (TMU), is derived from their first use, which was to transport a ton of liquefied chlorine in each tank. TMU tanks are also authorized for the highway shipment of some compressed gases. These are not to be confused with large cylinders commonly called pigs, which are 3A and 3AA cylinders. These pigs would commonly be used for such products as anhydrous hydrogen chloride. 

Anhydrous hydrogen chloride is a colorless gas that fumes strongly in moist air and has a highly irritating effect on body tissues. It has a sharp, suffocating odor and is shipped in cylinders as a liquefied compressed gas under its vapor pressure of 613 psig at 70°F (4230 kPa at 2LUC). 

Anhydrous hydrogen chloride is shipped as a compressed liquefied gas under its own vapor pressure in cylinders and in tube trailers. It is also shipped as a refrigerated liquid in insulated tank cars and cargo tanks. 

If water is present, it may prevent the reaction going to completion. The commonest and mildest reagent is 5 % (w/v) anhydrous hydrogen chloride in methanol. It is most often prepared by bubbling hydrogen chloride gas (which is commercially available in cylinders or can be prepared by dropping concentrated sulfuric acid slowly on to fused ammonium chloride or into concentrated hydrochloric... 

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