Sodium Bisulfate CAS#7681-38-1
Sodium bisulfate is a white crystalline solid that is readily soluble in water. It is corrosive to both metals and biological tissues.
It is highly hygroscopic, meaning it readily absorbs moisture from the environment. In aqueous solution, sodium bisulfate fully dissociates into sodium (Na⁺), hydrogen (H⁺), and sulfate (SO₄²⁻) ions.
As a mineral acid, it is not expected to contaminate groundwater or soil, nor is it prone to bioaccumulation in the food chain, according to EPA data (1993).
Sodium bisulfate Chemical Properties
| Melting point | 315 °C |
| density | 2.1 |
| form | Granules |
| color | White to light yellow |
| Water Solubility | soluble in 2 parts H2O, 1 part boiling H2O; decomposes in alcohol to sodium sulfate and H2SO4 [MER06] |
| Sensitive | Hygroscopic |
| Merck | 138658 |
| Stability: | Stable. Incompatible with strong bases, strong oxidizing agents, sodium carbonate, sodium hypochlorite. May decompose upon exposure to moist air or water. |
| InChI | InChI=1S/Na.H2O4S.H/c;1-5(2,3)4;/h;(H2,1,2,3,4); |
| InChIKey | TTXJTWGBBUPRBF-UHFFFAOYSA-N |
| SMILES | S(O)(O)(=O)=O.[NaH] |
| CAS DataBase Reference | 7681-38-1(CAS DataBase Reference) |
| EPA Substance Registry System | Sodium bisulfate (7681-38-1) |
| Hazard Codes | Xi |
| Risk Statements | 41 |
| Safety Statements | 24-26 |
| RIDADR | 3260 |
| WGK Germany | 1 |
| RTECS | VZ1860000 |
| F | 3 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | II |
Product Usage
Sodium Chlorite (for ClO₂), as a strong oxidizing agent and a key raw material for the preparation of chlorine dioxide (ClO₂), is widely used in the field of water treatment for the disinfection and sterilization of drinking water, industrial circulating water, and wastewater.
It effectively eliminates bacteria, viruses, and other microorganisms present in water, while also helping to remove odor and color, and reduce the presence of harmful residues, thereby improving overall water quality.
Company Profile
Furuida (Jinan) Chemical Technology Co., Ltd. is a fine chemical company based in Shandong, China, working across R&D, manufacturing, sales, and global service. Focused on advanced chemical materials, it follows three clear rules: honest business, tight quality, and service as a long-term relationship. Innovation is done in practice, not just claimed, and quality is checked throughout production. With this approach, Furuida keeps entering new markets, improving its operations, and earning buyer trust.
A strong team drives this effort—professionals skilled in cross-border trade and technical support—while a mature global supply system keeps the company both reliable and responsive. Annual sales have passed RMB 600 million, and lasting partnerships have been built with over 5,000 industrial buyers across Asia, Europe, Africa, and Oceania. This wide reach has created strong customer loyalty and broad industry recognition.
Furuida's product range includes pharmaceutical intermediates, food additives, electroplating chemicals, water treatment agents, dye auxiliaries, functional new materials, titanium compounds, metal salts, catalysts, and surfactants. These serve pharmaceuticals, electronics, coatings, rubber and plastics, specialty chemicals, and water treatment. From this base, Furuida supplies customers worldwide with consistent, fairly priced products and one-stop solutions that adapt to market needs.
