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This section provides an overview for sodium hyposulfite as well as their applications and principles. Also, please take a look at the list of 17 sodium hyposulfite manufacturers and their company rankings. Here are the top-ranked sodium hyposulfite companies as of December, 2024: 1.Bini Chemicals, 2.nacalai, 3.Ghanshyam Chemicals.
Table of Contents
Sodium hyposulfite is the sodium salt of dithionite.
It is also called "sodium dithionite," "sodium dithionite," or "sodium hydrosulfite." When simply called dithionite, it often refers to sodium hyposulfite or the dithionite ion obtained by dissolving it.
When sodium hyposulfite powder comes in contact with a small amount of water in the air, the heat produced by decomposition can cause it to ignite.
Sodium hyposulfite, like sodium sulfite, is often used as a food additive in food processing. The most common use is as an antioxidant in wine and other beverages.
It is also used as a bleaching agent and an anti-discoloration agent because of its easy solubility in water and strong reducing action. It can also be used to improve the color tone of food products and make undesirable pigmented or colored substances in raw materials colorless.
Half of the world's sodium hyposulfite is used to dye and bleach textiles, and one-third is used to bleach pulp and paper. Sodium hyposulfite is industrially purified by the reaction of a sodium salt with sulfur dioxide mediated by metallic zinc.
Sodium hyposulfite is a white crystal at room temperature. It has a pungent odor similar to that of sulfurous acid gas. It has a flash point of 100°C and an ignition point of 200°C.
Sodium hyposulfite is slightly soluble in ethanol and soluble in water. Its melting point is 52°C. It decomposes into sodium sulfate and sulfur dioxide when heated above 90°C in air. In the absence of air, it decomposes violently to sodium sulfite, sodium thiosulfate, sulfur dioxide, and trace amounts of sulfur at temperatures above 150°C.
The chemical formula of sodium hyposulfite is Na2S2O4, with a molar mass of 174.107 and a density of 2.19 g/cm3. The anhydrous form of sodium hyposulfite is a white monoclinic crystal. The dihydrate is also known and is a yellowish columnar crystal, but is easily dehydrated to an anhydrous form. Furthermore, the dihydrate is unstable because it is easily oxidized by oxygen in the air.
The anhydride of sodium hyposulfite has a C2 symmetric structure with a torsional angle of 16° and an overlapping conformation. The dihydrate, on the other hand, has a Gauche conformation with a torsion angle of 56°.
1. Synthesis by Zinc Dust Method
Zinc powder is suspended in water and passed through sulfur dioxide, which dissolves the zinc into zinc dithionite. By adding sodium carbonate or sodium hydroxide, zinc is precipitated as a white precipitate of zinc hydroxide (II). After concentrating under reduced pressure, sodium chloride and methanol are added to precipitate anhydrous sodium hyposulfite.
2. Synthesis by the Soda Formate Method
The sodium formate method was put to practical use by Mitsubishi Gas Chemical Company, Inc. When sodium formate is dissolved in 80% methanol and sodium hydroxide and sulfur dioxide are added, anhydrous sodium hyposulfite precipitates. The advantage of this method over the zinc dust method is that it is less expensive than the zinc dust method, since sodium formate is obtained as a byproduct in the production of polyhydric alcohols.
3. Synthesis by Amalgamation Method
Sodium amalgam prepared in a brine electrolyzer is brought into contact with an aqueous solution of sodium hydrogen sulfite and reduced to yield sodium hyposulfite.
4. Synthesis by the Sodium Borohydride Method
Sodium hyposulfite is produced by adding sulfur dioxide and sodium hydroxide to sodium borohydride, which is a stable reducing agent in strong alkaline solutions.
5. Synthesis by Electrolysis
Sodium hyposulfite is produced by reducing sulfite ions in an electrolytic cell separated by a semipermeable membrane.
*Including some distributors, etc.
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Spectrum Chemical MFG Corp. was founded in 1971, is headquartered in New Brunswick, New Jersey, and has facilities in Gardena, California. Spectrum is a fine chemical manufacturing company with an emphasis on USP, NF, FCC, BP, EP, JP, and ACS grade products, and is ISO 9001:2015 certified. Spectrum primarily serves the analytical, biopharmaceutical, food & beverage, personal care, and pharmaceutical chemicals industries. Spectrum has 4 product segments which are chemicals, equipment, supplies, and safety.
Wego Chemical Group was founded in 1978 and headquartered in Great Neck, New York. WEGO is a full-service supplier and distributor of chemicals, minerals, and other raw materials to clients around the world. Markets and segments include agriculture & animal care, chemical & material manufacturing, construction & building materials, electronics, food & beverage, “household, industrial & institutional”, mining, oil & gas, personal care & pharmaceutical, paper & packaging, surface treatment, textiles, and water treatment.
Univar Solutions is a distributor and supplier of chemicals and ingredients since 1924 and are headquartered in Downers Grove, Illinois. The company provides a wide range of chemicals to customers and extends its value-added services to suppliers. The services include data sharing, digital marketing, lab and formulation capabilities, and more. As providers of chemicals their inventory is limitless with stocks of acids, enzymes, oxides, silicates, additives, and other ingredients and they offer packaging, product development, and custom blending besides the supplies. Overall industries like Food, Agriculture, Mining, Home and Industrial Cleaning, Pharmaceuticals, and lots more benefit from Univar Solutions.
Kanto Chemical Co. Inc., founded in 1944 and headquartered in Tokyo, Japan, is a reagent manufacturer with overseas affiliates in other countries, including China, France, USA, Taiwan, and Malaysia. Its product portfolio includes analytical reagents, ionic liquids, Iodine compounds, ultra-pure chemicals, and water analysis kits. The company is also developing regenerative medicine and genetics reagents and has over 50,000 products. It has several certifications, including ISO 9001, acquired in 1994, making it the first Japanese company in the reagent industry. Other certifications are ISO 14001, ISO 13485, and ISO/IEC 17025.
Junsei Chemical Co. Ltd., established in 1948 and headquartered in Tokyo, Japan, is a manufacturer of chemical reagents and chemical products, including commissioned synthesis of chemical products. Some of the products it makes include Sodium chloride solution, concentrated glycerin, calcium chloride, ascorbic acid, and nitric acid. The chemical products have a wide range of applications and can be used in pathological examination, as food additives, for analysis, and in the pharmaceutical industry. All its plants, including its research institute, are ISO4001 and ISO9001 certified, while its Saitama and Ibaraki plants are equipped with buildings that comply with GMP.
Bini Chemicals, established in 2005, is headquartered in Mumbai, India, and is a manufacturer, exporter, and supplier of different kinds of industrial chemicals. Bini Chemicals offers a wide range of products, including inorganic salt, sodium bisulfite, sodium sulfite powder, and sodium sulfite solution. Their products cater to industries such as agriculture, food preservative, water treatment chemicals, oxygen scavenger chemicals, and photography. Bini Chemicals emphasizes quality control measures to ensure the efficacy of their chemicals in industrial processes.
Ghanshyam Chemicals was established in 1990, in Gujarat, India as a manufacturer and supplier of chemicals. The company offers compounds such as Sodium Nitrite, Calcium Hypochlorite, Calcium Chloride, and more, as well as oils such as Pine oil, Turkey Red oil, Castor oil, etc along with Activated Carbon in the form of washed, unwashed, granulated and powdered having applications in the water filtration sector, industrial furnace and for removal of undesired color, smell, and other impurities in the sugar industry. These chemicals including others have vast uses in the pharmaceutical, agriculture, paint, and more.
Lakshmi Chemical Industries, founded in 1993 and located in Gujarat, India, is a manufacturer, supplier, and exporter of industrial chemicals. Their product portfolio includes sodium thiosulfate, sodium thiosulphate, and sodium thiosulfate anhydrous, which are utilized in various industries such as pharmaceuticals, agrochemicals, plastics, textiles, and paper. These chemicals serve as essential raw materials, additives, and processing aids, contributing to the manufacturing processes and end products in these industries. Lakshmi Chemical Industries adheres to stringent quality standards and holds ISO 9001 certification.
MUBY CHEMICALS, established in 1976, is a manufacturer and supplier of chemicals and excipients used in pharmaceuticals, cosmetics & personal care, agrochemical, and textile industries. Based in Ankleshwar, Gujarat, India, the company offers Shale gas hydraulic Fracturing Chemicals such as ammonium persulfate, diverting agents, inhibitors, ATMP phosphonate, and encapsulated gel breakers. Some food analytical reagent chemicals include benzyl alcohol, calcium oxide, boric acid, carbamide peroxide, and lithium carbonate. The company is GLP-approved, Kosher Certified, "REACH" Registered, and ISO-9001 Certified.
Nilkanth Organics, established in 1996 and headquartered in Mumbai, India, is a manufacturer and supplier of organic chemicals. The company is engaged in offering various types of chemicals, including Sodium Compound Chemicals, Industrial Chemicals, Inorganic Chemicals, and Pharmaceutical Intermediates such as Acetyl Chloride, and Acetone. The chemicals provided by them comply with international norms and standards. Their products serve various industries, such as consumer products, industrial materials, and healthcare applications.
Vinipul Inorganic Pvt. Ltd., formerly known as Akash Purochem, was established in 1986 and headquartered in Mumbai, Maharashtra, India. The company is a manufacturer and exporter of various industrial chemicals, organic solvents, rubber chemicals, and a diverse range of other chemicals for global consumers across the industries of pharmaceuticals, agriculture, paint, inorganic chemicals, and glass manufacturing. The company lists hundreds of compounds in stock, and leading sales include citric acid, zinc chloride, sodium acetate, zinc acetate, and sodium bicarbonate.
Merck, started in 1668 and based in Darmstadt, Germany, is a supplier of solutions and services for research, development, and manufacture of pharmaceutical and biotechnological drug therapies. The company serves the life science industry and has a broad portfolio of 300,000 products, including biopharmaceutical manufacturing, industrial microbiology, reagent, life science research, and water purification products. It is available in 66 countries, brings together six brands, and has several ISO certifications, including ISO 13485, ISO 14001, ISO 13485, and ISO 50001.
Nacalai Tesque Inc., founded in 1846 and headquartered in Kyoto, Japan, is a manufacturer of research chemicals, fine chemicals, diagnostics, and the related instruments. Some of its products include cytokines, nucleic acid electrophoresis, cell dissociation reagents, and sialic acid-related products, and it also offers custom and bulk service for bulk reagents and cell culture media. The company has more than 50 domestic distributors and several worldwide, including Asia, the Middle East, Oceania, Europe, and Africa. It is ISO 9001 and ISO 9002 certified, while the Kyoto South brand and Tesque factory are ISO 14001 certified.
Shakti Chemicals was founded in 1983 in Uttar Pradesh and is a manufacturer and distributor of oilfield chemicals, pulp and paper, and photographic chemicals for industries such as film processing laboratories, leaching of gold and silver, and pharma raw materials. Its product catalog includes Sodium formaldehyde bisulfite, Catalyst ammonium bisulfite solution, and Potassium hydroxide solution. The company exports the products to South Africa, Nepal, and the USA. It is also a member of Indiamart.
Shanghai Chemex Group Ltd., based in Shanghai, China, is a manufacturer and supplier of chemical raw materials. The company offers a diverse range of products including water treatment chemicals, food industry chemicals, and agrochemicals. Key offerings include phosphoric acid, potassium carbonate, and HEDP. These chemical compounds play a crucial role in the manufacturing of various goods and products. The company caters to international order and has branches in Istanbul, Dubai, and Moscow.
Founded in Mumbai, India in 2006, Otto Chemie Pvt. Ltd. is an ISO 9001:2015 & GMP certified chemical manufacturing company and distributor. Otto Chemie serves customers in many industries including agriculture and food processing, pharmaceuticals, oil & gas, cement, as well as educational and R&D industries. Product offerings include antibiotics, amino acids, vitamins, detergents, ionic liquids, materials science compounds, labware, oil, metal & ceramic science compounds and tools, oils, reagents, solvents.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | nacalai |
16.1%
|
| 2 | Bini Chemicals |
14.3%
|
| 3 | Ghanshyam Chemicals |
8.9%
|
| 4 | Spectrum Chemical Mfg. Corp. |
8.9%
|
| 5 | Vinipul Inorganic Pvt. Ltd |
7.1%
|
| 6 | KANTO CHEMICAL CO.,INC. |
7.1%
|
| 7 | Merck |
7.1%
|
| 8 | Shanghai Chemex Group Ltd. |
5.4%
|
| 9 | LAKSHMI CHEMICAL INDUSTRIES |
5.4%
|
| 10 | MUBY CHEMICALS |
5.4%
|
Derivation Method
The ranking is calculated based on the click share within the sodium hyposulfite page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
India
|
8 | 53.3% |
|
United States of America
|
3 | 20.0% |
|
Japan
|
3 | 20.0% |
|
China
|
1 | 6.7% |
