Cylinders methylamine

Phenylacetone reacts with methylamine to produce a Schiff s base and a molecule of water. This Schiff s base then reacts with hydrogen and Raney nickel catalyst and gets reduced to methamphetamine. To encourage the formation of this Schiff s base, the amount of water in the reaction mixture is held to less than 10% 5% is even better. If the underground chemist is able to get methylamine gas in a cylinder, it is easy to control... 

It is even better here to use the anhydrous methylamine gas in a cylinder. This hard to come by item is used by cooling the cylinder down in a freezer, then tipping the cylinder upside down and cracking open the valve to drain out 150 ml of pure methylamine gas into a chilled beaker. 

He is now ready to run the reaction. If he has methylamine gas in a cylinder, he puts 1 liter of 95% ethyl alcohol (190 proof grain alcohol) in the bomb. If he has 40% methylamine in water, he uses 1 liter of absolute ethyl alcohol. Then he adds the same amount of methylamine as used in the first method described in this chapter. If he used methylamine gas from a cylinder, he adds 100 ml each of ether and benzene to the bomb. Then he adds 90 grams of Raney nickel catalyst and 25 grams of sodium acetate. Finally, he adds 300 ml of phenylacetone to the bomb. 

Methylamine is stored in a cool, well-ventilated noncombustible area separated from possible sources of ignition and oxidizing substances and mercury. Its solutions are stored in a flammable liquid storage room or cabinet. The gas is shipped in steel cylinders or tank cars the liquid is shipped in steel drums or tank cars. 

By Water In the United States, in DOT approved cylinders, portable tanks, cargo tanks, and multi-unit tank car tanks on cargo vessels and on passenger vessels within Stowage category B limitations for monomethylamine and trimethylamine and D limitations for di-methylamine. Containers should also be stowed clear of living quarters. 

The anhydrous methylamines are shipped as flammable gases under their own vapor pressures in cylinders, tank cars, and cargo tank trucks. They are also authorized by TC and DOT for shipment in ton multi-unit (TMU) tank cars and portable tanks. 

Specification 3A, 3AA, and 3B cylinders used in methylamine service must be requalified by hydrostatic retest every 5 years under present regulations. Specification 4B, 4BA, and 4BW must be hydrostatically tested after expiration of the first 12-year period and each 7 or 12 years thereafter depending on the initial hydrostatic test method. Cylinders in compliance with specifications 3A, 3AA, 3B, 4B, 4BA, or 4BW that are used specifically for monomethylamine, dimethylamine, and trimethylamine service and are free from corroding components may also be qualified by an external visual inspection as described in CGA C-6, Standards for Visual Inspection of Steel Compressed Gas Cylinders [10]. Periodic hydrostatic retest is not required for specification 3E cylinders. 

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