NaOH. Sodium hydroxide. Chemist mixes alkali in a flask. Concept - caustic soda in the hands. Chemist synthesizes leading substances. Scientific experiments with NaOH. Study of the sodium hydroxide

NaOH. Sodium hydroxide. Chemist mixes alkali in a flask. Concept - caustic soda in the hands. Chemist synthesizes leading substances. Scientific experiments with NaOH. Study of the sodium hydroxide - 160741783

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