Nitrosulfonazo III
Nitrosulfonazo III (CAS: 1964-89-2), a complex organic compound with the formula C22H10N6Na4O18S4 and a molecular weight of 866.56 g/mol, is a highly effective laboratory reagent. It is predominantly utilised for the precise titrimetric determination of phosphates and sulfates. Its reliable performance makes it a valuable tool in analytical chemistry laboratories for accurate quantitative analysis.
- IUPAC
- 2,7-Bis(4-nitro-2-sulfophenylazo)chromotropic acid tetrasodium salt

Phosphate Determination
Nitrosulfonazo III is employed as an indicator in the rapid titrimetric determination of phosphate ions. This application is crucial in environmental monitoring and quality control processes where phosphate levels need accurate quantification.
Sulfate Determination
This reagent serves as an effective indicator for the titrimetric analysis of sulfate concentrations. Its use ensures precise measurement of sulfates in various matrices, supporting diverse industrial and research applications.
Analytical Chemistry Reagent
As a specialised dye, Nitrosulfonazo III functions as a vital reagent in analytical chemistry. It is applied in specific assays requiring precise endpoint detection during titrations, contributing to accurate chemical analysis.
| Molecular weight | 866.56 |
|---|---|
| Empirical formula | C22H10N6Na4O18S4 |
| Application | For the rapid titrimetric determination of phosphates and sulfates |
| 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.
| Absorption | λmax 407 nmλmax 573 nm (2nd) |
|---|
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 Nitrosulfonazo III primarily used for?
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Nitrosulfonazo III is primarily used for the rapid titrimetric determination of phosphates and sulfates.
What is the CAS number and chemical formula for Nitrosulfonazo III?
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The CAS number for Nitrosulfonazo III is 1964-89-2, and its chemical formula is C22H10N6Na4O18S4.
What grade and purity does Tech Serve Solutions supply for Nitrosulfonazo III?
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Tech Serve Solutions supplies Nitrosulfonazo III as a research-grade chemical. We do not represent this product as USP, BP, EP, or any pharmacopoeia grade.
What are the safety and handling recommendations for Nitrosulfonazo III?
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When handling Nitrosulfonazo III, it is essential to use appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter should be used. The product has a WGK Germany rating of 3, indicating a high hazard to water.
How is Nitrosulfonazo III packed, shipped, and exported?
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Nitrosulfonazo III is carefully packed according to international shipping regulations to ensure safe transit. Tech Serve Solutions is a global supplier and exporter experienced in handling chemical shipments worldwide.
How can I request a sample or quote for Nitrosulfonazo III?
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To request a sample or obtain a quotation for Nitrosulfonazo III, please contact our sales department through the website or by phone, providing your specific requirements.
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