About Sodium Metabisulphite (SMBS)
Sodium Metabisulphite (SMBS), structurally identified as Na2S2O5, is a vital inorganic compound widely preferred for its excellent chemical reducing properties. DPRJ Universal stands out as a preeminent Sodium Metabisulphite (SMBS) manufacturer and bulk supplier in India. We specialize in producing premium LR, commercial, and technical grades, matching standard parameters like Loba, Merck, and premium industrial benchmarks. Every delivery is supported with complete document verifications, including a certified TDS, precise specification sheets, COA, and global SDS compliance records.
Looking to Buy Sodium Metabisulphite (SMBS) in Bulk?
Acquire top-tier chemical supplies directly from a verified industrial Sodium Metabisulphite manufacturer. Enjoy wholesale pricing on batches from standard 5kg packaging structures up to full multi-ton configurations. Contact us to locked-in day-to-day optimal factory rates.
📩 Get Instant Quote ✉️ Email: [email protected]Technical Specifications
- Chemical Name: Sodium Metabisulphite (SMBS)
- Common Variants: Sodium Meta Bi Sulphite, Sodium Metabit Sulphate
- Purity Threshold: 98.0% (Minimum Active Grade)
- CAS No.: 7681-57-4
- Appearance: White to slight cream-colored crystalline powder
- Chemical Formula: Na2S2O5
- Molecular Weight: 190.10 g/mol
- Density: 1.48 g/cm³
- Packaging: 25 KGS BAG
- Origin: India
Primary Applications
- Water Treatment: Critical chemical mechanism used to remove chlorine and neutralize residual oxidants in industrial water networks and RO membranes.
- Food & Beverage: Functions as a highly controlled preservative agent to prevent degradation, enzyme browning, and microbial expansion.
- Mining Operations: Acts as an efficient flotation depressant during copper, gold, and zinc mineral processing circuits.
- Chemical Synthesis: Serves as a primary reducing element in dye formulations, leather tanning processing, and organic molecule reduction.
SKU: SMBS001
MPN: SODIUM-METABISULPHITE-DPRJ-001
Category: Chemicals → Inorganic Salts → Sodium Salts → Sodium Metabisulphite (SMBS)
Brand: DPRJ Universal
Price Range (Bulk)
₹85 - ₹88 per kg
Price valid until: 31 Dec 2026
Availability: In Stock for Bulk Orders
Customer Rating
⭐ 4.9 / 5
Based on 2,103 verified industrial buyers
“The product purity, consistency, and standard TDS metrics of SMBS from DPRJ Universal dramatically optimized our chlorine removal process loop. A trusted partner for bulk chemical supplies.”
— Verified Industrial Buyer, Water Management System
“Consistent quality of Nitrobenzene ensures high yield in our Aniline process. Reliable bulk supplier.”
— Verified Industrial Buyer, Chemical Plant
Shipping & Delivery
Destination: India
Shipping Cost: Free (Bulk Orders)
Handling Time: 1–2 Days
Transit Time: 2–5 Days
Return Policy
Return Window: 7 Days (for non-compliant quality)
Return Method: Return By Mail/Pickup
Return Fees: Free Return (on verified quality issue)
Frequently Asked Questions
What is the primary use of Sodium Metabisulphite (SMBS)?
The primary industrial use of Sodium Metabisulphite (SMBS) is as a reducing agent, disinfectant, and antioxidant. It is extensively used in water treatment systems to remove chlorine, in food preservation as an additive, in gold mining processes, and across various chemical manufacturing applications.
What is the molecular weight and chemical formula of Sodium Metabisulphite?
The chemical formula for Sodium Metabisulphite is Na2S2O5 (often queried as sodium meta bi sulphite structure or sodium metabit sulphate). The molecular weight or molar mass is approximately 190.10 g/mol.
How much sodium metabisulfite is required to remove chlorine?
To remove chlorine effectively in water treatment systems, stoichiometrically it requires roughly 1.34 parts of Sodium Metabisulphite to neutralize 1 part of free chlorine. However, in practice, manufacturers recommend dosing approximately 2 to 3 parts of SMBS per part of chlorine to guarantee complete dechlorinating reaction dynamics.
What is the Sodium Metabisulphite structure and density?
The chemical structure of Sodium Metabisulphite consists of an anionic disulfite structural unit (S2O5^2-) bonded to two sodium cations (Na+). The physical density of pure industrial grade solid Sodium Metabisulphite is approximately 1.48 g/cm³.
What are the key technical specifications (TDS and CAS)?
High purity Sodium Metabisulphite carries the unique CAS Number 7681-57-4. The standard Technical Data Sheet (TDS) specifications define it as a white to slight yellowish crystalline powder with an active SO2 content of around 65% minimum and minimum purity threshold of 98%.
Is sodium metabisulfite natural?
No, commercial-grade Sodium Metabisulphite is not classified as a natural compound. It is a synthetically produced inorganic salt manufactured industrially by reacting chemical sulfur dioxide (SO2) gas inside a concentrated solution of sodium carbonate.
Is Sodium Metabisulphite hazardous and what are the handling precautions?
Yes, Sodium Metabisulphite is considered hazardous. It can cause severe eye damage, respiratory irritation upon inhalation, and releases toxic sulfur dioxide gas if exposed to acids or moisture. Safe handling mandates personal protective equipment (PPE) like dust masks, safety goggles, and proper ventilation protocols.
Ready to Order Sodium Metabisulphite (SMBS)?
Flexible packaging options including industrial bags, wholesale logistics, and global export infrastructure ready. Contact our product sales experts today.
🚀 Request a Quotation