These include: (a) isobutylene sulfide / lewisky trioxide at temperatures and pressures between - 20 掳 C and 80 掳 C and between 1 bar and 15 bar; (b) dilution of the water reaction mixture; (c) neutralization of the diluted reaction mixture below 6-8 pH; and (d) separation of ...
After testing a number of British and foreign samples of pure sulphuric acid, Harveyreported that he had found the `nitrogen free' sulphuric acid specially supplied by the British Drug Houses, Ltd., to be satisfactory, though the `analytical reagent' acid was not so. Even in the purest acid...
NaOH and, after neutralization with acetic acid, the extract is deproteinised by being passed, under air pressu... K. Peisker - 《Journal of the American Oil Chemists Society》 被引量: 0发表: 1964年 Purification of Sulphuric Acid and Preparation of Nitric Acid A LL chemists know that ...
OF the various methods suggested for the preparation of sulphuric acid suitable for use in nitrate estimations, the method of Atkins1 is perhaps the most suitable. There is, however, one disadvantage in this method, namely, the precipitation of sulphur if a slight excess of hydrogen sulphide is...
Sodium salt of benzarone sulphuric acid ester, its preparation and pharmaceutical compositions prepared from this compound 来自 掌桥科研 喜欢 0 阅读量: 18 申请(专利)号: DE19813110460 申请日期: 1981-03-18 公开/公告号: DE3110460A1 公开/公告日期: 1982-12-30 申请(专利权)人: ECKERT,...
Comments on the papers by J. Balej and coworkers on the mechanism of the formation of peroxomonosulphuric acid and the effect of this acid during the electrolytic preparation of peroxodisulphates 喜欢 0 阅读量: 6 作者:Smit,W. 摘要: Article without abstract DOI: 10.1135/cccc19820007 年份: ...
A method for the preparation of 2,5-furan dicarboxylic acid includes the step of contacting a feed comprising a compound selected from the group consisting of 5-hydroxymethylfurfura
using an ice bath, 0.64 ml of 95% sulphuric acid is added and the mixture is stirred at RT for 15 h. It is cooled to 0° C. and neutralized with 9 ml of 7.5M aqueous NH3 solution. The product is extracted with AcOEt, dried over MgSO4, filtered and concentrated under RP. It is...
The weight contributions of lignin, cellulose and hemicellulose to the carbon yields of different biomass [63]. Biomass Coconut shell Apple pulp Plum pulp Plum stones Olive stones Sulphuric acid treated olive stones Soft wood Synthetic coconut shell Lignin (Lc %) 66.9 58.0 79.0 70.8 75.3 64.8 ...
SENSITIVITY - Add 0.1 ml of the solution and 0.15 ml ofosmicacid solution to50mlof1Msulphuric acid. Add 0.1 ml of 0.1 M eerie ammonium nitrate; the color changes from red to light blue. Indophenol Blue Indicator; CI49700: CI8H26N2O=276.34 ...