Sodium Bisulfate
Sodium Hydrogen Sulfate
- CAS
- 7681-38-1
- EC
- 231-665-7
- Sectors
- Water & Wastewater Treatment, Food & Nutrition, Mining & Metals
Sodium Bisulfate (CAS 7681-38-1) is a white granular acid salt, also known as sodium hydrogen sulfate, that serves as a dry form of sulfuric acid for pH reduction without the handling risks of a liquid, and is used in pool water treatment, food acidification and metal pickling.
Typical Properties
| Molecular formula | H2O4S.Na |
|---|---|
| Molecular weight | 120.06 g/mol |
| Appearance | off-white granules, crystals or powder |
| Form | Granules |
| Color | White to light yellow |
| Melting point | 58 °C |
| Density | 2.1 |
| GHS signal word | Danger · Corrosive, Irritant / harmful |
| HS code | 28331900 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Bisulfate
Applications
Lowers pH in swimming pools; cleans metals in pickling; acidifies foods like cheeses; adjusts dyes in textiles; and sanitizes in brewing equipment.
Safety & Risks
Corrosive to eyes and skin; dust causes throat irritation. Neutralize with bases; avoid aluminum contact; wear acid-resistant gear per GHS standards.
Packaging
Packed in 25 kg polypropylene bags with inner seals for moisture block. Store in bisulfate dry containment with acid spill trays.