Sodium bisulfate monohydrate
Sodium bisulfate monohydrate (CAS: 10034-88-5) is a hydrated inorganic salt with the linear formula NaHSO₄ · H₂O and a molecular weight of 138.08 g/mol. This compound functions as a pH adjuster and is commonly employed in analytical chemistry, environmental sample preservation, and as a laboratory reagent. Its properties make it suitable for various industrial applications requiring acidic conditions or as a source of sulfate ions.
- IUPAC
- Sodium hydrogen sulfate monohydrate

Analytical Chemistry and Chromatography
Sodium bisulfate monohydrate is used in analytical procedures and chromatography, often as a buffer component or reagent for specific analyses. Its controlled acidity is valuable for maintaining stable analytical conditions.
Environmental Sample Preservation
This chemical is utilized for preserving water samples, helping to maintain their integrity and chemical composition before laboratory analysis. It aids in preventing degradation of analytes.
pH Adjustment and Acidification
As a source of bisulfate ions, it effectively lowers pH in aqueous solutions. This makes it useful in industrial processes and laboratory settings where controlled acidification is required.
Laboratory Reagent
Sodium bisulfate monohydrate serves as a general laboratory reagent for various chemical reactions and preparations. Its defined purity ensures reliability in research and development.
| Molecular weight | 138.08 |
|---|---|
| Linear formula | NaHSO4 · H2O |
| Assay | 99% |
| Grade | ReagentPlus® |

Hazard statements
- H318Causes serious eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3260 8 / PGIII |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 41 |
| Safety statements (S) | 24-26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 Sodium bisulfate monohydrate used for?
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Sodium bisulfate monohydrate is used in analytical chemistry, chromatography, environmental analysis for water samples, as a preservative, and as a general laboratory reagent requiring pH adjustment or acidification.
What is the CAS number and formula for Sodium bisulfate monohydrate?
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The CAS number is 10034-88-5, and its linear formula is NaHSO₄ · H₂O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium bisulfate monohydrate in ReagentPlus® grade with an assay of 99%. TSS does not represent this product as USP, BP, or EP grade unless explicitly stated.
How should Sodium bisulfate monohydrate be handled safely?
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Handle with care as it causes serious eye damage (H318). Wear protective equipment including eyeshields, gloves, and a dust mask (type N95 US). In case of contact with eyes, rinse cautiously with water for several minutes and seek medical advice.
Is Sodium bisulfate monohydrate available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Sodium bisulfate monohydrate, adhering to international shipping regulations.
How can I request a quote or sample for Sodium bisulfate monohydrate?
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To request a quote or sample, please contact our sales team through the website or via direct inquiry, providing your specific requirements and shipping details.
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