Sodium metabisulfite properties and uses

2019-02-21

First, the product name:


Product Name: Sodium metabisulfite Chemical name: Sodium metabisulfite: also known as sodium dithiopentaoxide, heavy sulphur


Second, the physical and chemical properties of the product are white or yellowish crystalline powder, the relative density of wet when wet. Soluble in water glycerin, slightly soluble in ethanol. It is easily decomposed by moisture and easily oxidized to sodium sulfate in exposed air. Contact with strong acid releases sulfur dioxide to form the corresponding salt. Heat to 150 degrees decomposition.

sodium pyrosulfite



Third, use: The pharmaceutical industry is used to produce chloroform, phenylpropyl sulfone and benzaldehyde. The rubber industry is used as a coagulant. The printing and dyeing industry is used as a dechlorination agent and cotton scouring agent after cotton bleaching. The tannery industry is used for leather treatment, which makes the leather soft, plump and tough, with waterproof, anti-folding and abrasion resistance. The chemical industry is used to produce hydroxy vanillin, hydroxylamine hydrochloride, and the like. The photosensitive industry is used as a developer or the like. The food industry is used as a bleaching agent, preservative, bulking agent, antioxidant, color protectant and preservative.


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