TAPSO sodium salt
TAPSO sodium salt (CAS: 105140-25-8; Formula: C7H16NO7SNa) is a zwitterionic buffering agent with a molecular weight of 281.26 g/mol. It belongs to the Good's buffers class and is known for its buffering capacity in the physiological pH range. This compound is primarily utilised in biochemical and diagnostic applications where stable pH control is essential for assay performance and sample integrity.
- IUPAC
- 3-(N-tris[Hydroxymethyl]methylamino)-2-hydroxypropanesulfonic acid

Diagnostic Assay Manufacturing
TAPSO sodium salt is employed in the manufacturing of diagnostic assays, providing critical pH control for enzyme-based reactions and other sensitive biochemical processes, ensuring reliable assay results.
Biological Buffering
As a Good's buffer, it is suitable for maintaining stable pH in various biological research and laboratory applications, including cell culture media and protein purification protocols, within its effective pH range of 7.0-8.2.
Biochemical Research
Its zwitterionic nature and pKa of 7.6 at 25°C make it a valuable reagent for biochemical research requiring precise pH control, especially in enzymatic studies and electrophoresis.
| Molecular weight | 281.26 |
|---|---|
| Linear formula | C7H16NO7SNa |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Pka 25 °C | 7.6 |
|---|---|
| Market Segment | Diagnostic Assay Manufacturing |
| Useful Ph Range | 7.0 - 8.2 |
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 TAPSO sodium salt used for?
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TAPSO sodium salt is used as a biological buffer, particularly in diagnostic assay manufacturing and biochemical research, to maintain a stable pH between 7.0 and 8.2.
What is the CAS number and formula for TAPSO sodium salt?
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The CAS number for TAPSO sodium salt is 105140-25-8 and its linear formula is C7H16NO7SNa.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies TAPSO sodium salt meeting specific laboratory and research-grade requirements. The exact assay and purity are detailed on the product's Certificate of Analysis; TSS does not represent this product as USP, BP, EP, or pharmacopoeia grade unless explicitly stated.
How should TAPSO sodium salt be handled safely?
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Handle TAPSO sodium salt with appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter may be necessary. Ensure good ventilation and avoid dust formation. The WGK Germany classification is 3, indicating a high hazard to water.
How is TAPSO sodium salt packed, shipped, and exported?
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TAPSO sodium salt is carefully packed to ensure stability during transit and is available for domestic shipment and international export by Tech Serve Solutions.
How can I request a sample or quote for TAPSO sodium salt?
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To request a sample or a quote for TAPSO sodium salt, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
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