sodium metabisulfite

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Zhangshu Maosheng Chemical Co., Ltd. specializes in the production of high-quality sodium pyrosulfite products. The company has been engaged in the technical research and development, production management, and equipment improvement of sodium pyrosulfite as well as other sulfur-based chemical products for 20 years. It possesses a number of specialized technologies and patented technologies, representing the world’s leading level in inorganic sulfur chemistry. The company employs the most rigorous management practices to produce world-class products, aiming to make Chinese sodium metabisulfite a benchmark for sodium metabisulfite worldwide! Phone: 0795-7566233 Product description: Molecular formula: Na2S2O5 Quality standards: Industrial grade: HG/T2826-2008; Food grade: GB1893-2008 CAS number: 7681-57-4 Appearance: White or slightly yellow crystalline powder Packaging: Packed in composite plastic woven bags lined with polyethylene film, with a net content of 25 kg per bag; or in flexible intermediate bulk containers lined with polyethylene film, with a net content of 1000 kg per bag or 1100 kg per bag. Uses: It can be used as a mordant in printing and dyeing, a dechlorinating agent after fabric bleaching, and a bleaching agent for paper fibers; it serves as a reducing agent and sulfonating agent in the chemical and pharmaceutical industries, as well as an agent for the processing of non-ferrous metals; it is also used as a bactericidal and preservative agent in food preservation, the brewing industry, and beverages ； Wastewater treatment agent ； Leather treatment agents for the leather industry ； Shelf life of rubber curing agents, etc.: Half a year from the date of production. Precautions for transportation and storage: During transportation, it is necessary to protect them from rain, moisture, exposure to direct sunlight, and package damage ； Storage and transportation in combination with acids, oxidizers, and toxic or harmful substances are strictly prohibited. It should be stored in a well-ventilated, dry, and non-corrosive warehouse. It decomposes easily when exposed to moisture, oxidizes and deteriorates rapidly when left in the air, releasing SO2 gas continuously; it should not be stored for long periods. 　　　　　　Product technical specifications: Industrial-grade sodium pyrosulfite (HG/T2826-2008)
Item | Specifications | First-class product | Second-class product
Main content (as Na2S2O5), w% | ≥ 96.5 | 5.0
Water-insoluble substances, w% | ≤ 0.05 | 0.05
Iron (Fe), w% | ≤ 0.005 | 0.010
Clarity | Clear
Arsenic (As), w% | ≤ 0.0001 | —

Typical analysis results of Maosheng Chemical Products:
Specification name | Value
Na2S2O5, w% | 97.32%
Water-insoluble substances, w% | 0.01
Sodium sulfate, w% | 0.67
Sodium carbonate, w% | 1.12
Iron (Fe), w% | 0.001
Clarity | Clear
Arsenic (As) | 0.5 ppm
pH (1% solution) | 4.8

Zhangshu Maosheng Chemical Co., Ltd.
Phone: 0795-7566233
Mobile: 13575526688
Website: http://www.jxmshg.com
Address: Lushan Road, Salt Chemical Industry Base, Zhangshu City, Jiangxi Province