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Phenol
748
CTJRREKT TOPICS.
[J. F. 1.
Standardization of Aircraft Materials and Parts. ALYON. (Jowlal of the Society of Chemical Industry, vol. sxxviii, Xo. 8, p. 144, April 30, rgIg.)-It may not be generally known that during the past year and a half the British Engineering Standards *\ssociation has been responsible for the preparation of all specifications for aircraft materials on behalf of the Department of Aircraft Production. Particularly interesting have been those specifications dealing Gth materials which formerly were perhaps not considered as being of an engineering nature, such as chemicals used as ingredients for aeroplane dope, rubber, textiles, adhesives, paint and varnishes. Owing to the extremely useful part these specifications have played it is now learned \vlth considerable satisfaction that the British Engineering Standards Xssociation has been requested to continue to prepare them as well as to undertake their distribution, together with the issue of manufacturing instructions and notes on testing procedure which lvere formerly prepared and issued by the Technical and Inspection Departments of the Department of Aircraft Production. The Association has undertaken this additional responsibility as from March 31, 1919. Phenol. A. G. PETERKIN. (J ozrmal of Industrial arbd Eugimcring Clmnutry, vol. xi, No. 5, p. 475, May, IgIg.)-Before the war this country’s consumption of phenol was about g,ooo,ooo pounds per year. The bulk of it came from [England, and was obtained from coal-tar distillates directly. A small part was synthesized from benzol. The general impression here is that this synthetic phenol \yas made ii German plants subsidized by the Government. The production in the United States during the war increased continually. Pit the time of our entry into the struggle it amounted to 75,000,000 pounds per year, and after that time plants were erected so that at the end we were able to produce more than r,jo,~,~o pounds. Of this, not more than z,ooo,ooo pounds were obtained directly from coal-tar distillates by extraction with caustic soda. At the present time the consumption in this country is not much greater than ~,OCQOOO pounds per year, about equally divided between the drug and disinfectant, the dyestuff, and the synthetic resin industries. Composite Ships. ?LNc)K. (Mariftc Rcvicw, vol. xlix, No. 6, p. 283, June IgIg.)-The first Norwegian composite ship has been launched at Larvik. It is built of fir planks over a steel frame, has a carrying capacity of 650 tons and a speed of nine knots. It is driven by an oil motor and can carry a fuel supply to last twelve days. Another similar ship was launched in March. Denmark has a composite ship which was built recently at Frederickshavn.
CTJRREKT TOPICS.
[J. F. 1.
Standardization of Aircraft Materials and Parts. ALYON. (Jowlal of the Society of Chemical Industry, vol. sxxviii, Xo. 8, p. 144, April 30, rgIg.)-It may not be generally known that during the past year and a half the British Engineering Standards *\ssociation has been responsible for the preparation of all specifications for aircraft materials on behalf of the Department of Aircraft Production. Particularly interesting have been those specifications dealing Gth materials which formerly were perhaps not considered as being of an engineering nature, such as chemicals used as ingredients for aeroplane dope, rubber, textiles, adhesives, paint and varnishes. Owing to the extremely useful part these specifications have played it is now learned \vlth considerable satisfaction that the British Engineering Standards Xssociation has been requested to continue to prepare them as well as to undertake their distribution, together with the issue of manufacturing instructions and notes on testing procedure which lvere formerly prepared and issued by the Technical and Inspection Departments of the Department of Aircraft Production. The Association has undertaken this additional responsibility as from March 31, 1919. Phenol. A. G. PETERKIN. (J ozrmal of Industrial arbd Eugimcring Clmnutry, vol. xi, No. 5, p. 475, May, IgIg.)-Before the war this country’s consumption of phenol was about g,ooo,ooo pounds per year. The bulk of it came from [England, and was obtained from coal-tar distillates directly. A small part was synthesized from benzol. The general impression here is that this synthetic phenol \yas made ii German plants subsidized by the Government. The production in the United States during the war increased continually. Pit the time of our entry into the struggle it amounted to 75,000,000 pounds per year, and after that time plants were erected so that at the end we were able to produce more than r,jo,~,~o pounds. Of this, not more than z,ooo,ooo pounds were obtained directly from coal-tar distillates by extraction with caustic soda. At the present time the consumption in this country is not much greater than ~,OCQOOO pounds per year, about equally divided between the drug and disinfectant, the dyestuff, and the synthetic resin industries. Composite Ships. ?LNc)K. (Mariftc Rcvicw, vol. xlix, No. 6, p. 283, June IgIg.)-The first Norwegian composite ship has been launched at Larvik. It is built of fir planks over a steel frame, has a carrying capacity of 650 tons and a speed of nine knots. It is driven by an oil motor and can carry a fuel supply to last twelve days. Another similar ship was launched in March. Denmark has a composite ship which was built recently at Frederickshavn.