摘要:

1:3-Diaminoisopropanol combines with cobaltous salts to give a series of cobaltic co-ordination compounds, which had been previously prepared by the use of roseo-cobaltic salts. The base has also been found to give crystalline co-ordination compounds with cupric, silver, and zinc salts.

ISSN:1923-4287    

DOI:10.1139/cjr39b-046

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

The activities of water in aqueous solutions of sodium chloride and of sulphuric acid have been compared by the isopiestic method at 25 °C. over a range of molalities extending up to that of the saturated salt solution. The apparatus, which was of the Sinclair type, proved to be as efficient as any yet devised. The results remove the uncertainties that previously existed in regard to the position of them1/m2curve and give a qualitative indication of the second dissociation of sulphuric acid. The calculated activities agree with the best available data. The isopiestic standard chosen by Janis and Ferguson has been confirmed over the whole molality range.

ISSN:1923-4287    

DOI:10.1139/cjr39b-047

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

A new adiabatic calorimeter is described in which transfer of the material under investigation from the thermostat to the calorimeter is effected through an evacuated space.

ISSN:1923-4287    

DOI:10.1139/cjr39b-048

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

Lampblack has been produced from ethylene, propane, methane, and various mixtures of these gases. Carbon liberated from the flame of burning defines is similar to carbon black in its ability to reinforce rubber, while carbon from paraffins resembles lampblack and does not reinforce rubber. The production of a reinforcing pigment by non-impingement methods is associated with a gas having a negative heat of formation.

ISSN:1923-4287    

DOI:10.1139/cjr39b-049

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

The existence of an enormous area of seleniferous soil is revealed through the results of a reconnaissance examination of portions of Alberta, Saskatchewan, and Manitoba provinces of Canada. About 300 samples of shales, soils, and plants were collected at 90 different locations. The selenium content of the shales varied from 0.3 to 3.0 p.p.m., and of the soils from 0.1 to 6 p.p.m. The vegetation contained from 3 to 4190 p.p.m. of selenium.

ISSN:1923-4287    

DOI:10.1139/cjr39b-050

出版商:NRC Research Press    

年代:1939

数据来源: NRC