About this product
Sodium Bi Sulphate — also written sodium bisulphate, sodium bisulfate, sodium hydrogen sulphate or sodium acid sulphate — is the acid salt NaHSO4, CAS 7681-38-1. We supply Technical Grade material as white granules / crystals at 95.0% min assay. It is an acid salt, so it dissolves to give a strongly acidic solution, with a pH of 1.0–1.4 on a 10% solution. We stock it at our Redhills warehouse in Chennai in 50 kg HDPE woven bags with LDPE liner and dispatch across South India.
Applications & Uses
Safety & Technical Documents
MSDS / SDS
TDS / COA
Certificate of Analysis · with every supply, on request
Product DataTechnical Specifications
Physical Properties
- Appearance
- White granules / crystals
- Purity
- 95.0% min (as NaHSO4)
- Assay
- Sodium Bisulphate (NaHSO4) 95.0% min by mass; Sodium Sulphate (Na2SO4) 4.0% max; Free Sulphuric Acid (H2SO4) reported; Iron (as Fe) 50 ppm max; Moisture (as H2O) 0.5% max
- pH
- 1.0 – 1.4 (10% solution)
Supply & Packaging
- Packaging
- 50 kg HDPE woven bags with LDPE liner
- Grades Available
- Technical Grade
Compliance & Storage
- HS Code
- 2833 19 90
- Storage
- Store dry in tightly closed containers. Strongly acidic in solution and corrosive — avoid contact with metals and bases.
These specs are indicative. Request a Certificate of Analysis (COA) for batch-specific values.
Source Manufacturers
Sourced directly from verified manufacturers for consistent quality and traceability.
Supplied across South IndiaCoimbatore · Madurai · Hosur · Bangalore · Hyderabad · Visakhapatnam · Kochi
Frequently Asked Questions
What is the CAS number and chemical formula of sodium bisulphate?
Sodium bisulphate is CAS 7681-38-1 and its chemical formula is NaHSO4. Its HSN code is 2833 19 90.
What is the difference between sodium bisulphate, sodium bisulphite and sodium metabisulphite (SMBS)?
They are three different chemicals and are frequently mixed up when ordering. Sodium bisulphate is NaHSO4 (CAS 7681-38-1), sodium bisulphite is NaHSO3, and sodium metabisulphite or SMBS is Na2S2O5. Check the CAS number on your requirement before you enquire.
What grade and specification of sodium bisulphate do you supply?
We supply Technical Grade sodium bisulphate as white granules / crystals, to the manufacturer's published technical-grade specification: NaHSO4 95.0% min by mass, Na2SO4 4.0% max, Iron (as Fe) 50 ppm max, Moisture 0.5% max, free sulphuric acid reported, and pH 1.0–1.4 on a 10% solution. The full TDS and MSDS are downloadable on this page.
What is the pH of a 10% sodium bisulphate solution?
1.0 to 1.4. Sodium bisulphate is an acid salt, so it dissolves in water to give a strongly acidic solution. That figure is from the technical-grade specification on the TDS for this product.
Is sodium bisulphate corrosive, and how should it be stored?
Yes. It is strongly acidic in solution and corrosive, and causes skin and serious eye irritation. Keep it away from metals and bases, and store it dry in tightly closed containers.
What packaging is sodium bisulphate available in, and can I buy it in Chennai?
We supply it in 50 kg HDPE woven bags with LDPE liner. Stock is held at our Redhills warehouse in Chennai with dispatch across South India — call or WhatsApp +91 86087 80096 for a quote. Order sizes depend on packaging and current stock.
Packaging Options
Product Details
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