Potassium bisulfate
Potassium bisulfate (CAS 7646-93-7), with the linear formula KHSO₄ and a molecular weight of 136.17 g/mol, is an inorganic salt. It functions as a strong acidifying agent and a flux. This compound is primarily utilised in chemical synthesis and as a reagent in various laboratory applications. It is available from TSS in SAJ first grade.
- IUPAC
- Potassium hydrogen sulfate
- Synonyms
- Potassium hydrogen sulfate
Chemical Synthesis Reagent
Potassium bisulfate serves as an acidic catalyst and reagent in diverse organic and inorganic synthesis pathways. Its strong acidic nature facilitates numerous chemical transformations.
Laboratory Applications
Utilised in laboratories for its acidic properties, it can be employed for pH adjustment, analytical procedures, and as a flux in certain high-temperature applications.
Fluxing Agent
Due to its ability to lower the melting point of solid mixtures, potassium bisulfate can act as a flux in metallurgical and ceramic processes.
| Molecular weight | 136.17 |
|---|---|
| Linear formula | KHSO4 |
| Assay | ≥98.0% |
| Grade | SAJ first grade |
| Density | 2.32 g/mL at 25 °C(lit.) |
| Melting point | 214 °C(lit.) |
Hazard statements
- H314Causes severe skin burns and eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2509 8 / PGII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34-37 |
| Safety statements (S) | 26-36/37/39-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Availability | available only in Japan |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Potassium bisulfate used for?
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Potassium bisulfate (CAS 7646-93-7) is primarily used as a reagent in chemical synthesis and in various laboratory applications, including functioning as an acidic catalyst and a flux.
What is the CAS number and formula for Potassium bisulfate?
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The CAS number for Potassium bisulfate is 7646-93-7, and its linear formula is KHSO₄.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Potassium bisulfate in SAJ first grade with an assay of ≥98.0%.
What are the main hazards associated with Potassium bisulfate?
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Potassium bisulfate is a Danger hazard (GHS05, GHS07). It causes severe skin burns and eye damage (H314) and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, face shields, and suitable gloves and respirators, must be used.
Is Potassium bisulfate available for export from Japan?
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Currently, Potassium bisulfate (CAS 7646-93-7) is available only in Japan.
How can I request a quote or sample?
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To request a quote or sample for Potassium bisulfate, please contact the TSS sales team through our website or your designated sales representative.
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