All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(92 products available)
High-purity sodium hydrosulfite 88
People use this highly purified form as a powerful reductant in various chemical processes. Industries primarily use it because of its exceptional ability to effectively remove oxygen. One of its greatest strengths is its ability to bleach and decolorize substances. Textile manufacturing companies use it to process fabrics and dyes. Paper manufacturers also use it in the deinking process of recycled paper. In mining, organizations use it as a specialized agent for extracting precious metals like gold and silver through hydrometallurgy.
Sodium dithionite
This compound shares a structural relationship with sodium hydrosulfite. However, unlike sodium hydrosulfite, it has stronger reductive characteristics. It finds applications where intense bleaching action is necessary. Textile industries use it in the decolorization of dyes and textile bleaching. Paper production companies also employ it for deinking and bleaching processes.
Crystalline form sodium hydrosulfite 88
The sodium hydrosulfite 88 is in a solid, stable state in this form. People commonly produce and transport larger quantities using this form. In paper manufacturing, they use it to remove impurities and provide a whiter final product. Textile companies also use it in fiber bleaching processes. Packaged in large bags, this product is suitable for organizations needing bulk supplies.
Granular sodium hydrosulfite 88
This is another solid form, which has been ground to granules. This format enhances solubility in applications where quick dissolution is critical. The granular form is ideal for distant transportation and storage. This is because it has increased stability and humidity resistance compared to its powdered counterparts.
Reduced particle size sodium hydrosulfite 88
This product offers the advantages of increased surface contact area for chemical reactions. Processes such as bleaching in textiles require only lower quantities of this product to achieve the same results when they are bleached with larger quantities of sodium hydrosulfite. More so, its fine size allows quick dissolution in solvents. Thus, it is useful in industries that need immediate and effective bleaching operations, like textile manufacturing. In these industries, the quicker chemical reaction often translates to reduced processing time and costs.
Dye and textile industries
These industries widely use sodium hydrosulfite as a reducing agent in their bleaching and dye fixing processes. This chemical compound helps bleach fibers, which eliminates unwanted color and improves the fabric's whiteness. It also stabilizes dyes during application. Thus, ensuring color fixation and preventing discharge or fading.
Paper and pulp industry
The paper recycling process uses sodium hydrosulfite to deink recycled paper. This compound reduces the stickiness of the ink, thus enabling effective removal during washing. Manufacturers also use it for optical brightening, which improves paper whiteness.
Mineral processing
People use sodium hydrosulfite in hydrometallurgy to recover valuable metals. In gold and silver extraction, for instance, it acts as a reducing agent. Thus, converting metal complexes into their elemental forms. This makes it possible for other chemicals to precipitate or extract the metals from the solution effectively. Moreover, the compound aids in the flotation process of certain ores by selectively modifying the surface of minerals. This improves the separation of valuable sulfide concentrates from gangue.
Organic synthesis
Sodium hydrosulfite is a versatile reagent in organic chemistry. It reduces compounds like quinones and aldehydes, which are converted to their corresponding alcohols. It is also used to generate sulfur-based intermediates for various reactions. These reactions include sulfonation or sulfination, which are often integral to producing agrochemicals or pharmaceuticals.
Specialty chemical manufacturing
Sodium hydrosulfite is useful in producing optical brighteners and other specialty chemicals. Textiles and paper manufacturers commonly use these compounds to enhance brightness and whitening effects. Sodium hydrosulfite can reduce sulfur dyes, thus enabling the synthesis of thia dyes, which are effective in fabric dyeing.
The chemical formula of sodium hydrosulfite is Na2S2O4. Sometimes, people also call it disodium hydrogen sulfite or sodium bisulfite. In solid form, it appears as white crystalline powder or granules. Users need to store it in a cool and dry environment, away from moisture and acidic substances, as these conditions lead to its degradation. It has a relatively low solubility in water. Nevertheless, it is an effective reducing and bleaching agent in various chemical reactions.
Commonly, manufacturers produce sodium hydrosulfite from sodium bisulfite or from sodium sulfite through chemical reactions with sulfur dioxide, zinc, or sodium metabisulfite. The outcome remains in the form of crystals or powders, which people commonly package in moisture-resistant bags for bulk distributions. Occasionally, the product goes through granulation or particle size reduction to enhance its applicability in diverse industries.
As a powder or crystalline solid, sodium hydrosulfite 88 can be easily mixed into solutions for industrial applications. It is often integrated into bleaching agents or chemical baths in textile, paper, and mineral processing through simple additive procedures. Manufacturers attach it by dissolving it in water to activate its bleaching and reducing effects. In lower temperature environments or as granules, they enhance its dissolution and reaction on the manual or mechanical methods of blending.
Sodium hydrosulfite may cause irritation to the eyes, skin, and respiratory tract. However, using appropriate personal protective equipment can mitigate these effects. Ensure people working with the compound wear gloves, goggles, and masks to avoid direct contact and inhalation. Proper ventilation in workspaces also helps reduce inhalation risk.
Certain industry-standard tests help classify sodium hydrosulfite into varying grades that suit particular industrial applications. Key evaluations include purity analysis, where an assessment of the sodium hydrosulfite concentration checks for impurities like sulfites or sulfates. Another is the moisture content determination, which ensures optimal stability and potency. People testing the product for particle size distribution should also consider this factor, as it influences solubility and reactivity. Users should also conduct potency verification to help them confirm the reductive capacity of sodium hydrosulfite. They should also verify its chemical consistency, which is critical for process predictability in industrial applications.
This compound primarily falls under hazardous substances in the environments it gets used. Most mining industries, for instance, classify it as a dangerous substance, as this chemical may produce gases that are fatal when inhaled. FDA regulations stipulate labeling and usage guidelines for specific applications, such as pulping and textiles. Automotive packaging usually contains the compound, thus ensuring downstream users have easy access to pertinent safety information. Also, many countries regulate the product under environmental control statutes. So, manufacturers should ensure that both local and international users adhere to these standards.
A1. Always put on gloves, goggles, and a mask to avoid inhalation and skin contact. Work within a ventilated space to lower inhalation exposure.
A2. They appreciate its ability to recover metals through a chemical reaction that separates the metals from other substances.
A3. Sodium hydrosulfite degrades upon moisture exposure. Hence, store it in air-tight containers to prevent its reaction with water.
A4. Users can also call it sodium dithionite.
A5. Textile, paper, mineral, organic synthesis, and specialty chemicals manufacture industries commonly use sodium hydrosulfite.
