Ammonia combustion constants

Constitution XV for sucrose has up to the present satisfied all demands made upon it. Like its precursors, I and II (page 6), it was not incompatible with physical properties of sucrose such as the magnetic rotation, or the parachor, although the latter claim has been denied. Von Lippmann lists a great many early determinations of the physical properties of the sugar more recent measurements include the heat of combustion, the molecular weight in liquid ammonia, and various optical and electrical constants. ... 

Colorless gas pungent suffocating odor human odor perception 0.5 mg/m hquefies by compression at 9.8 atm at 25°C, or without compression at -33.35°C (at 1 atm) sohdifies at -77.7°C critical temperature and pressure, 133°C and 112.5 atm, respectively vapor density 0.59 (air l) density of liquid ammonia 0.677 g/mL at —34°C dielectric constant at —34°C is about 22 extremely soluble in water solution alkaline pKa 9.25 in dilute aqueous solution at 25°C the gas does not support ordinary combustion, but bums with a yellow flame when mixed in air at 16— 27% composition. 

The product is described as a powder, white to dark red in colour according to the time of heating at 250° C. The density was 2-5. The nitride was tasteless, odourless, and chemically inactive at ordinary temperatures. The heat of formation (from white phosphorus) is given as +81-5 Cals, per mol.3 The molar heat of combustion was 474-7 Cals, (at constant pressure). The nitride dissociated into its elements in a vacuum at about 760° C.4 It was reduced to phosphorus and ammonia by hydrogen at a red heat, and burned when heated in oxygen or chlorine. It was hydrolysed by boiling water, thus... 

ARna 12 148 ARb 12 282 AA.,, 0 773 AA 0 472. The molecular heat of combustion at constant volume is 430,800 calories, and work on the dielectric constant has been carried out by Matthews, and studies of the absorption spectra by Crymble. The complex MeHg- has been isolated by electrolysing methyl mercuric halides in liquid ammonia solution. It forms a fine black deposit on the cathode, and may be obtained in the form of flakes if the process be carried out in water or alcohol solution. The latter form appears to be more stable than the former, which decomposes into mercury and... 

Colorless to yellow, oily liquid. Pyrophoric in air burns to FejOj. Dec by light to Fe/cO), and CO. mp —20". bp 103, dj° 1.46-1.52 rtg 1.453. Critical temp 285-288 critical pressure 29.6 atm. Flash pi —15. Heat capacity at constant pressure (14 ) 56.9 cal/mole/ C. Latent heat of fusion 3161 cal/mol latent heat of vaporization 9.6kcal/-mole. Heat of combustion —386.9 kcal/mole heat of formation [Fe(CO),0iq)] —182.6 kcal/mole. Practically insol in water readily sol in most organic solvents including ether, benzene, petr ether, acetone, ethyl acetate, carbon tetrachloride, carbon disulfide slightly sol in alcohol practically insol in liquid ammonia. Protect from light and air, LDM in mice, rats 2.19, 0.91 mg/1 inhalation, exposure for 30 min. (Sunderman). 

Syn. Volatile alkali—Occurs in combination with hydrochloric acid, as sal ammoniac in the mine of animals, especisdly of birds and reptiles, as mate of ammonia in several aluminous and ferruginous rocks and earths in small quantity finally, in the air, as a constant result of the putrefaction, decay, or combustion of organic matters containing nitrogen. 

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