GB189920413A - Manufacture of Dinitro- and Diamido-anthraflavic Acid. - Google Patents
Manufacture of Dinitro- and Diamido-anthraflavic Acid.Info
- Publication number
- GB189920413A GB189920413A GB189920413DA GB189920413A GB 189920413 A GB189920413 A GB 189920413A GB 189920413D A GB189920413D A GB 189920413DA GB 189920413 A GB189920413 A GB 189920413A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- dinitroanthraflavic
- water
- produced
- alcohol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
20,413. Imray, O., [Farbwerke vorm. Meister, Lucius, & Br³ning]. Oct. 11. Dinitroanthraflavic acid is produced by nitrating anthraflavic acid in sulphuric-acid solution with the calculated quantity of nitric acid or a nitrate. The product is isolated by pouring the mixture into water. It is easily soluble in caustic alkali, alkaline carbonate, lime - water, baryta - water, sodium acetate, or alcohol. A small proportion of the product is difficultly soluble in alcohol, and appears to be an isomeric dinitroanthraflavic acid. Dyes, artificial.-The foregoing dinitroanthraflavic acid is reduced by the usual means, for example in alkaline solution by sodium sulphide, and the diamidoanthraflavic acid thus produced dyes wool in an acid bath, or previously-mordanted wool, and the shade produced is changed by subsequent treatment with bichromate into a red-brown fast to fulling.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB189920413T | 1899-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB189920413A true GB189920413A (en) | 1900-07-28 |
Family
ID=32359517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB189920413D Expired GB189920413A (en) | 1899-10-11 | 1899-10-11 | Manufacture of Dinitro- and Diamido-anthraflavic Acid. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB189920413A (en) |
-
1899
- 1899-10-11 GB GB189920413D patent/GB189920413A/en not_active Expired
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