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Sodium Metabisulphite Manufacturer and Supplier

CAS No.: 7681-57-4; 7757-74-6 | EC Number.: 231-673-0 | Molecular formula.: Na2S2O5, Na2O5S2

Sodium Metabisulphite

Sodium Metabisulfite Manufacturers, Sodium Metabisulphite Suppliers, Sodium Metabisulfite Formula, Sodium Metabisulphite MSDS, Sodium Metabisulphite SDS, Sodium Metabisulphite Exporter in Mumbai, India.

Vinipul Chemicals Pvt. Ltd., a renowned manufacturer, supplier, and exporter based in India, specializes in the production of high-purity Sodium Metabisulfite CAS no: 7681-57-4. As a reliable Sodium Metabisulphite manufacturer, our company is widely recognized for providing Na2S2O5 with exceptional quality, ensuring its accurate composition and freedom from impurities. We achieve this by utilizing superior purity chemicals and employing the latest manufacturing equipment that adheres to international industry standards.

As a reliable sodium metabisulfite supplier, we take pride in offering chemicals of the highest quality. Our product is carefully formulated to meet the specific requirements of our customers, guaranteeing precise composition and excellent performance. Additionally, our Sodium Metabisulphite exhibits an impressive shelf life, ensuring long-lasting usability.

Whether you are in need of Sodium Metabisulphite for industrial applications, research purposes, or any other specialized use, you can rely on the leading sodium metabisulfite suppliers like Vinipul Chemicals Pvt. Ltd. to provide you with a dependable supply of this essential chemical. As prominent sodium metabisulfite manufacturers in India, We are dedicated to delivering products that meet the highest standards of quality, purity, and performance.

What is Sodium Metabisulphite?

Sodium metabisulfite, also known as disodium metabisulfite or sodium pyrosulfite, is an inorganic compound with the chemical formula Na2S2O5. It is commonly used for various purposes such as a disinfectant, antioxidant, and preservative agent. When sodium metabisulfite is dissolved in water, it forms sodium bisulfite. Sodium metabisulfite chemical formula has diverse applications across industries, including food and beverage, water treatment, photography, and the production of certain chemicals. Its use as a preservative is particularly notable, as it helps inhibit the growth of microorganisms and prolong the shelf life of various products.

Sodium Metabisulphite Details

This table provides information about Sodium Metabisulphite, a chemical compound with the CAS No. 7681-57-4 and EC Number. 231-673-0. The table also lists various Sodium Metabisulphite common name and synonyms. The table contains Sodium Metabisulphite structure, Sodium Metabisulphite solubility and molecular formula. sodium metabisulfite ph. value is also mentioned in the table. Sodium Metabisulphite is commonly used in various industries in different applications. It is also used in the pharmaceutical industry for various purposes.


Chemical nameSodium Metabisulphite
CAS No7681-57-4; 7757-74-6
EC Number231-673-0
Commercial name / SynonymsSodium metabisulfite, 7681-57-4, Sodium pyrosulfite, Sodium disulfite, Disodium disulphite, Disodium pyrosulfite, Sodium metabisulphite, Disodium disulfite, Disodium metabisulfite
Molecular formulaNa2S2O5
Chemical Structure
Melting Pointgreater than 302 °F (Decomposes) (NIOSH, 2016)
Component CompoundsDisulfurous acid
Physical Form White hexagonal Crystals or powder
Physical Appearance White crystalline or powder solid with a slight sulfur odor.
Solubility in water45.1 g/100 mL (0 °C)
65.3 g/100 mL (20 °C)
81.7 g 100 mL (100 °C)
SolubilityVery soluble in glycerol
Slightly soluble in ethanol
pH4.0-5.5 (10 % aqueous solution)
Packaging Details 25 kg / 50 kg / HDPE packaging bags / Drum/ As per Client’s requirements

Computed Properties

The table provides various properties of a chemical compound, including molar mass of sodium metabisulphite, hydrogen bond acceptor counts, an exact mass and mono-isotopic mass, heavy atom counts, and a topological polar surface area. These properties are useful in identifying and characterizing the compound for various purposes in industries such as pharmaceuticals and chemicals.
Property Name Property Value
Molecular Weight 190.11 g/mol
Hydrogen Bond Acceptor Count 6
Exact Mass 189.89825401 g/mol
Monoisotopic Mass 189.89825401 g/mol
Heavy Atom Count 9
Topological Polar Surface Area 125Ų
Complexity 136
Covalently-Bonded Unit Count 3
Compound Is Canonicalized Yes

Related Compounds with Annotation

The table provided contains information on various compounds, their structure names, compound IDs (CID), neighbor types, and counts of different annotation types related to sodium metabisulphite. The compounds listed include sodium dithionate, sodium hyposulfate, sodium metabisulfate, sodium sulfate (Na2S2O6), disodium disulfate, sodium pyrosulfite, disodium pyrosulfite, sodium disulfate, sulfate tetrasodium, sodium dithionate hydrate, sodium trithionate, and sodium pentathionate, among others. The table provides details about their respective CIDs, 2D structures, and the number of annotation types associated with each compound.

Sodium Metabisulphite Price

If you are looking to purchase Sodium Metabisulphite, it’s important to know the current market price. Sodium metabisulfite price per kg can vary depending on the various factors. Vinipul Chemicals offers the best Sodium Metabisulphite powder price in the market listed below: –
Product Range Price
Sodium Meta bi Sulphite Rs 105/kg
SMBS Rs 105/kg
Sodium Meta bi Sulphite – SO2 – 62% Rs 55/kg

Prices shown above are provisional prices and may change due to different market conditions for latest prices

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+91-932 223 1817

Types of Sodium Metabisulphite

Sodium Meta bi Sulphite

Sodium Meta bi Sulphite is the chemical compound with the formula Na2S2O5. It is commonly referred to as sodium metabisulphite. This compound is a white, crystalline powder that is soluble in water. It is widely used as a disinfectant, antioxidant, and preservative agent. Sodium metabisulfite is also utilized in various industries, including food and beverage, water treatment, photography, and the production of chemicals.

SMBS (Sodium Metabisulfite)

SMBS is an abbreviation for Sodium Metabisulfite. It is the same compound as sodium metabisulphite, mentioned above. SMBS is commonly used in various applications, such as a reducing agent, bleaching agent, and preservative. It is utilized in industries like water treatment, pulp and paper, textiles, and food processing. SMBS is known for its ability to release sulfur dioxide, which contributes to its antimicrobial and antioxidant properties.

Sodium Meta bi Sulphite - SO2 - 62%

This refers to a specific formulation of sodium metabisulfite with a concentration of sulfur dioxide (SO2) at 62%. Sulfur dioxide is a gas with strong antimicrobial and antioxidant properties. In this formulation, sodium metabisulfite is enriched with a higher concentration of sulfur dioxide, which enhances its effectiveness as a disinfectant and preservative agent. This particular type of sodium metabisulfite – SO2 – 62%

Prices shown above are provisional prices and may change due to different market conditions for latest prices

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+91-932 223 1817

How to make Sodium Metabisulfite?

Sodium metabisulfite manufacturing process involves the reaction of sodium hydroxide with sulfur dioxide. Here is the step-by-step process:

  1. Start with a solution of sodium hydroxide (NaOH).
  2. Add sulfur dioxide (SO2) to the sodium hydroxide solution. The reaction between SO2 and NaOH produces sodium sulfite (Na2SO3) and water (H2O): SO2 + 2 NaOH → Na2SO3 + H2O
  1. Initially, when the reaction is conducted in warm water, sodium sulfite (Na2SO3) precipitates as a yellow solid.
  2. Continue adding more sulfur dioxide (SO2) to the solution. The additional SO2 reacts with the sodium sulfite (Na2SO3) to form sodium metabisulfite (Na2S2O5): SO2 + Na2SO3 → Na2S2O5
  3. As more SO2 is added, the sodium metabisulfite (Na2S2O5) dissolves in the solution.
  4. Finally, upon cooling, the dissolved sodium metabisulfite (Na2S2O5) crystallizes, yielding a colorless solid residue of sodium metabisulfite.

This process allows for the production of sodium metabisulfite, which can then be used for various applications such as disinfection, antioxidation, and preservation in different industries.

How is sodium metabisulfite used as a preservative?

Sodium metabisulfite (SMBS), the commercially available salt derived from sulphurous acid, is employed as a preservative to prolong the freshness of meat products like fresh sausages and burgers. However, it’s worth noting that some individuals, particularly those with asthma, may experience adverse effects from its consumption.

When sodium metabisulfite comes into contact with water, it undergoes a chemical reaction and releases sulfur dioxide gas. This release of sulfur dioxide is an important characteristic of sodium metabisulfite and is often utilized for various purposes. However, it’s important to note that sulfur dioxide can have adverse effects on certain individuals, especially those who are sensitive or allergic to it.

Is sodium metabisulfite acidic or basic?

Sodium metabisulfite is considered to be acidic in nature. This means that it has a tendency to exhibit acidic properties when dissolved in water or other solutions. In the case of sodium metabisulfite, its pH value is commonly kept around 4.6 during the process of preparing a solution.

When sodium metabisulfite comes into contact with water, it undergoes a chemical reaction and releases sulfur dioxide gas. This release of sulfur dioxide is an important characteristic of sodium metabisulfite and is often utilized for various purposes. However, it’s important to note that sulfur dioxide can have adverse effects on certain individuals, especially those who are sensitive or allergic to it.

What is the difference between sodium sulphate and sodium metabisulphite?

The main distinction between sodium sulfate and sodium metabisulfite lies in their chemical compositions. Sodium sulfate consists of one sulfur atom and four oxygen atoms, forming the sulfate anion, while sodium metabisulfite is composed of two sulfur atoms and five oxygen atoms, resulting in the metabisulfite anion.

Furthermore, the valence of the anions differs between the two compounds. The sulfate anion in sodium sulfate carries a charge of 2-, making it divalent, while the bisulfite anion in sodium metabisulfite carries a charge of 1-, making it monovalent. This variance in the number of sulfur atoms, oxygen atoms, and the valence of the anions accounts for the dissimilarity between sodium sulfate and sodium metabisulfite.

Industrial Applications

Sodium metabisulfite finds a wide range of industrial applications due to its various properties and functions. Here are some sodium metabisulphite use:


Food and Beverage Industry

Sodium metabisulphite in food is widely used as a preservative to extend the shelf life of various products. Sodium metabisulfite in food inhibits the growth of bacteria, fungi, and other microorganisms, thereby preventing spoilage. It is also used as a food antioxidant, helping to prevent oxidation and maintain the color, flavour, and quality of food and beverages.

Water Treatment

Sodium metabisulfite is employed in water treatment processes. It acts as a reducing agent, removing chlorine and chloramines from water. It also helps control the growth of algae and bacteria in water systems, such as swimming pools, cooling towers, and industrial water treatment plants.

Textile Industry

Sodium metabisulfite is utilized in textile processing as a bleaching agent. It helps remove excess dye and impurities from fabrics, improving their appearance and colorfastness.

Textile Industry

Calcium Acetate is employed as a mordant in the dyeing and printing of textiles. It helps to fix and enhance the color fastness of dyes on fabrics, ensuring long-lasting and vibrant colours.

Chemical Production

It serves as a source of sulfur dioxide (SO2) in various chemical reactions. Sodium metabisulfite is used in the production of dyes, pharmaceuticals, and other chemical compounds.

These are just a few examples of sodium metabisulfite uses. Its versatile properties make it a valuable chemical compound in various industries.

Where to Buy Sodium Metabisulfite?

You can purchase sodium metabisulfite from Vinipul Chemicals Pvt. Ltd., a renowned sodium metabisulphite manufacturers, supplier, and exporter based in India. We specialize in producing high-purity sodium metabisulfite. You can contact Vinipul Chemicals directly to inquire about purchasing sodium metabisulfite and discuss your requirements. We will provide you with the necessary information regarding pricing, availability, and shipping options.


The purity level of Sodium Metabisulphite can vary depending on the supplier and grade. It is advisable to check the product specifications or contact the supplier for the specific purity level.

Sodium Metabisulphite is commonly available in the form of a white, crystalline powder.

Sodium Metabisulphite is typically packaged in HDPE packaging bags / Drum/ As per Client’s requirements

Sodium Metabisulphite should be stored in a cool, dry place, away from direct sunlight and incompatible substances. It is important to follow the storage instructions provided by the supplier.

Sodium Metabisulphite can be hazardous if mishandled. It is important to follow proper safety precautions, such as wearing protective equipment and handling it in well-ventilated areas. Consult the Safety Data Sheet (SDS) provided by the supplier for detailed safety information.

Sodium Metabisulphite can cause allergic reactions or sensitivities in some individuals, particularly those who are sensitive to sulfur dioxide. It is recommended to handle it with caution and follow appropriate safety measures.

Yes, Sodium Metabisulphite is approved for use as a preservative in food and beverage products in many countries. However, it is important to adhere to local regulations and usage guidelines for specific applications.

Sodium Metabisulphite can be used in water treatment processes, including the removal of chlorine and chloramines. However, its use in drinking water treatment should comply with regulatory standards and guidelines specific to your region.

The use of Sodium Metabisulphite in organic products depends on the organic certification standards and regulations of the specific country or certifying body. It is advisable to consult the relevant organic certification guidelines.

The shelf life of Sodium Metabisulphite can vary depending on storage conditions and the specific product. It is recommended to check the product label or consult the supplier for the recommended shelf life.

Yes, Sodium Metabisulphite can be exported to other countries, subject to international trade regulations, customs requirements, and compliance with import regulations of the destination country.

Many suppliers offer the option to request a sample of Sodium Metabisulphite before placing a bulk order. You can inquire with the supplier, such as Vinipul Chemicals Pvt. Ltd., about their sample policy.

You can purchase Sodium Metabisulphite from chemical suppliers, manufacturers, or distributors. One renowned manufacturer and supplier is Vinipul Chemicals Pvt. Ltd., based in India.

Market Area

We supply and exports Sodium Metabisulphite in all parts of the world such as

Sodium Metabisulphite in Africa Countries
South Africa , Nigeria, Kenya, Ghana, Ethiopia, Tanzania, Algeria, Angola, Benin, Botswana, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic (CAR), Chad, Comoros, Democratic Republic of the Congo, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eritrea, Gabon, Gambia, Guinea, Guinea-Bissau, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Nigeria, Rwanda, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Sudan, Sudan, Swaziland, Togo, Tunisia, Uganda, Zambia, Zimbabwe.

Sodium Metabisulphite in Gulf Countries
Oman, Qatar, Kuwait, Saudi Arabia, Dubai, Bahrain, Iran, United Arab Emirates

Sodium Metabisulphite in Asia Countries
Afghanistan, Armenia, Azerbaijan, Bahrain, Bangladesh, Bhutan, Brunei, Cambodia, China, Cyprus, Georgia, India, Indonesia, Iran, Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Laos, Lebanon, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal, North Korea, Oman, Pakistan, Palestine, Philippines, Qatar, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Syria, Taiwan, Tajikistan, Thailand, Timor-Leste, Turkey, Turkmenistan, United Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen

We supply Sodium Metabisulphite in all parts of India.
Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu & Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttarakhand, Uttar Pradesh and West Bengal.

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