BASF RAISES PRICES OF FORMIC ACID
Press Release: June 2011
BASF is raising its prices for formic acid in Europe 80 Euro per ton, in South America by 80 US-Dollars per ton and in Asia by 50 US-Dollars per ton.
BASF’s customers use formic acid in multiple applications. The eco-efficient acid helps to keep certain feeds fresh and free of salmonellae, removes paints and rust from metallic surfaces and scale from kettles and boilers. In breweries and wineries it disinfects kegs, casks and barrels; applied as an auxiliary in the pharmaceutical and crop protection industry it regulates pH values; in cleaning it acts as dirt remover and disinfectant. BASF is the world’s leading producer of formic acid, with production plants at its integrated Verbund sites in Ludwigshafen, Germany, and Nanjing, China.
MICROENCAPSULATION REDUCES ENVIRONMENTAL TOXICITY
International Journal of Environmental Analytical Chemistry: June 2011
Biocides turn out to be less toxic for the environment if they are subjected to microencapsulation, due to the fact that this process forms shell(s) for the substance. This is the conclusion of chemist Ms Mariluz Alonso in a thesis at the University of the Basque Country (UPV/EHU). In this research, she chose a number of biocides and other complementary substances, seeking a micro-encapsulation which, besides being compatible with the environment, is more soluble in water, more manageable for the operator, with better conditions of conservation, and effective against airborne insects. Her thesis is entitled Micro-encapsulation of biocides.
The aim of the researcher was to obtain a product that overcame the limits of common biocides. These limits correspond to a toxicological profile that restricts their use, poor solubility in water, high viscosity (in some cases) that complicates their handling, and high sensitivity (in most cases) to light and temperature. Within the study she managed to encapsulate tebuconazole fungicide.
As regards microencapsulation itself, the researcher opted for cyclodextrine-type (CD) carbohydrates as an encapsulating agent. Carbohydrates have high aqueous solubility, little tendency to absorb humidity, a high average lifespan at ambient temperature and are low cost. Cyclodextrines, in concrete, are cyclical dextrines obtained from the partial hydrolysis of maize starch. Also, a yield greater than 99 % was obtained in the formation of microcapsules, on applying a method for dissolution with organic solvents optimised in the laboratory where the research was undertaken.
Ms Mariluz Alonso Alonso (Bilbao, 1978) is a Doctor of Chemical Sciences. She drew up her thesis under the direction of Ms Rosa María Alonso Rojas and Ms Rosa María Jiménez Sanz; professor and senior lecturer respectively at the Department of Chemical Analysis of the Science and Technology Faculty at the UPV/EHU. Ms Alonso is currently a member of the research personnel contracted at this department.