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Sodium hydroxide, 50% w/w aq. solution is used as a chemical reactant or neutralization agent in various industries like chemical, pharmaceutical, textile, pulp and paper, metal and food industries and soap and detergent manufacturing. It is also used in the manufacture of synthetic fabrics such as rayon and also for manufacturing food products. It is utilized for pH adjustment and formation of in situ sodium methylate in bioethanol and biodiesel processing.
Afzal, A.; Chelme-Ayala, P.; Drzewicz, P.; Martin, J. W.; Gamal El-Din, M. Effects of Ozone and Ozone/Hydrogen Peroxide on the Degradation of Model and Real Oil-Sands-Process-Affected-Water Naphthenic Acids. Ozone Sci. Eng. 2015, 37 (1), 45-54.
Boitt, A. P. W.; Barcellos, I. O.; Alberti, L. D.; Bucci, D. Z. Evaluation of the Influence of the Use of Waste from the Processing of Rice in Physicochemical Properties and Biodegradability of PHB in Composites. Polímeros 2014, 24 (6), 640-645.
Hazard Statements: H314-H318
Causes severe skin burns and eye damage. Causes serious eye damage.
Precautionary Statements: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.