Turkish red oil
Turkish red oil , also tournant oil , is a mixture of castor oil , ricinoleic acid and its sulfuric acid ester, dihydroxystearic acid and its sulfuric acid ester, polyricinoleic acids and ricinoleic acid anhydrides and lactones.
history
In 1834, the German chemist and natural scientist Friedlieb Ferdinand Runge produced a forerunner of modern synthetic surfactants by "sulfonating" olive oil with sulfuric acid. Later the olive oil in the recipe was replaced by the cheaper castor oil. The result was Turkish red oil.
Manufacturing
Turkish red oil is obtained by the action of concentrated sulfuric acid on castor oil at room temperature by neutralizing the reaction mixture with caustic soda or ammonia . The salts of carboxylic acids and sulfonic acids formed during neutralization can - similar to soap - emulsify fats and oils and have a cleaning effect.
properties
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It is a clear, mostly brownish-yellow to dark red liquid, the density of which is 1.039 g · cm −3 and which is completely miscible with water.
use
Turkish red oil was previously used in Turkish red dyeing as a liquid textile auxiliary . It is used in the textile industry for bleaching , dyeing , printing and finishing .
Individual evidence
- ↑ BASF: History and development of surfactants ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ a b c data sheet Turkey red oil sodium salt, for microscopy from Sigma-Aldrich , accessed on May 18, 2017 ( PDF ).
- ↑ a b data sheet Turkish red oil (PDF) from Applicher, accessed on August 28, 2016.
- ^ Brockhaus ABC Chemie , VEB FA Brockhaus Verlag Leipzig 1965, p. 1446.
- ^ Hermann Römpp: Chemistry Lexicon. 6th edition Stuttgart 1966, pp. 6708-6709.
