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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: H290-H314-H335
May be corrosive to metals. Causes severe skin burns and eye damage. May cause respiratory irritation.
Precautionary Statements: P234-P260-P264b-P271-P280-P301+P330+P331-P303+P361+P353-P304+P340-P305+P351+P338-P310-P363-P390-P501c
Keep only in original container. Do not breathe dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Wash contaminated clothing before reuse. Absorb spillage to prevent material damage. Dispose of contents/ container to an approved waste disposal plant