Metabisulfite for Printing and Dyeing98% 7681-57-4 Sodium Pyrfor Printing Indrustrail Grade Price

• Customization: Available
• CAS No.: 7681-57-4
• Formula: Na2s2o5
• Model NO.: yh-jylsn
• EINECS: 231-673-0
• Classification: Inorganic Compounds
• Grade Standard: Industrial Grade
• Kind: Sulfite
• Quality: First Class
• Free Sample: Available
• Environmental Protection: Yes
• Lead Time: Within 7 Days
• Grade1: Food Grade 96.5% / 99%
• Grade2: Industrial Grade 99.5%/99%
• Purity: 90%~99%
• Appearance: Powder
• Port1: Qingdao Shangdong
• Port2: Shanghai Chian
• Package: 25kg, 500kg, 1000kg
• Coular: White
• Molecular Weight: 190.09
• Certification: ISO
• Fe ( Fe): ≤0.003%
• Water-Insoluble: 0.5%-01%Max
• Transport Package: 25kg/Bag
• Specification: bag
• Trademark: Customizable
• Origin: China
• HS Code: 2832100000
• Production Capacity: 10, 000mt/Year

Product Description

Product Parameters

Property	Description
Chemical Name	Sodium Metabisulfite
Molecular Weight	190.11 g/mol
Appearance	White crystalline powder or granules
Odor	Slight sulfur dioxide odor
Melting Point	150-155°C (decomposes)
Density	1.48 g/cm³
Solubility in Water	Soluble (1 g in 1.5 mL water at 20°C)
Solubility in Organic Solvents	Insoluble in ethanol
Stability	Stable; decomposes in moist air to release sulfur dioxide
Storage Conditions	Store in a cool, dry place; protect from moisture and strong oxidizers
Synonyms	Disodium hydrogen pyrosulfite, Sodium pyrosulfite
Kind	Inorganic sodium salt
HS Code	28321000

  

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Product Description

 

1. Food Industry
   • Preservative: Sodium metabisulfite is used to inhibit microbial growth and extend the shelf life of food products. It is commonly found in dried fruits, wines, and processed foods.
   • Antioxidant: It prevents oxidation in fruits and vegetables, preserving their color and texture.
   • Bleaching Agent: It is used to maintain the bright colors of food products and prevent browning.
   • Wine Production: Sodium metabisulfite is added to wine to inhibit yeast and bacterial growth, maintaining freshness and extending shelf life.
2. Water Treatment
   • Chlorine Reduction: It is used to neutralize chlorine in water treatment systems, ensuring safe drinking water and preventing corrosion in industrial processes.
   • Wastewater Treatment: Sodium metabisulfite reduces hexavalent chromium (Cr) to trivalent chromium (Cr³), making it safer for discharge.
3. Pharmaceuticals
   • Antioxidant: It is used in pharmaceutical formulations to prevent oxidation of active ingredients, ensuring stability and longevity of medications.
   • Preservative: It is added to injectable drugs and eye drops to inhibit microbial growth.
4. Textiles and Dyes
   • Bleaching and Dyeing: Sodium metabisulfite is used as a reducing agent in the textile industry to maintain color brightness and improve dye stability.
   • Desizing: It helps remove sizing agents from fabrics, improving their quality.
5. Industrial Applications
   • Corrosion Inhibitor: It is used in the oil industry to prevent corrosion by scavenging oxygen.
   • Gold Extraction: Sodium metabisulfite is used to precipitate gold from ores in the mining industry.
   • Paper Industry: It is used as a bleaching agent to improve the brightness of paper.
   • Rubber Industry: It acts as a coagulant in rubber production.
6. Photography
   • Developing Agent: Sodium metabisulfite is used in black-and-white film development to stabilize images and improve their longevity.
7. Other Uses
   • Leather Processing: It is used to soften and preserve leather, enhancing its durability.
   • Wood Treatment: It is used to degrade lignin in wood, aiding in the removal of tree stumps.
   • Perfume Industry: It is used in the production of vanillin, a key component in fragrances.
      

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Company Profile

FAQ

Q1: Can I get some samples?
A: Yes, sure. Usually, we can provide free samples for less than 5 kg, but the customer needs to pay for the shipping.

Q2: What is your MOQ?
A: The minimum order quantity varies for different products, with most requiring a minimum of 1 ton. However, we can accommodate smaller quantities, such as 100kg, with a 100% sample charge.

Q3: How to confirm product quality before placing an order?
A: You can obtain free samples of the products, but you need to cover the shipping fee or arrange for the samples to be sent to us by express. Additionally, you can provide us with your product specifications and requirements, and we will manufacture the products accordingly.

Q4: Is there a discount for bulk purchases? How much is the discount?
A: Yes, we offer discounts for bulk purchases. The discount is determined by evaluating factors such as purchase volume, product type, and cooperation period. Generally, the larger the purchase volume, the greater the discount.

Q5: How do I start paying?
A: Payment can be made by wire transfer, Western Union, PayPal, Visa, Mastercard, T/T, Apple Pay, Google Pay, etc.

Q6: What is the shipping time?
A: We ship the products out within 1-3 days and provide a tracking number. Shipping time varies by country.

Q7: What qualifications and certifications does the company have? Such as ISO certification, etc.
 A: Our supply manufacturers hold several authoritative certifications to ensure our products and services meet international standards and industry regulations. This includes the ISO 9001 Quality Management System certification, which indicates we have reached internationally recognized levels in product quality control, production process management, and continuous improvement, providing stable and reliable quality assurance for customers.

Q8: How about the after-sale service of products?
A: After purchasing products from our company, you will be supported by our professional technical team and after-sales team, who will help solve any problems you may encounter.