Calconcarboxylic acid
Calconcarboxylic acid (CAS 3737-95-9), with the molecular formula C21H14N2O7S and a molecular weight of 438.41 g/mol, is a useful indicator. It finds application in analytical chemistry, specifically for the titration of calcium ions using EDTA. This process is particularly effective in the presence of magnesium, where Calconcarboxylic acid provides a distinct colour change to signal the endpoint. Tech Serve Solutions supplies this reagent for laboratory and research purposes.
- IUPAC
- 2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid,3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid,Cal-Red®,Patton and Reeder’s reagent
- Synonyms
- Cal-Red®Patton and Reeder’s reagent2-Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid3-Hydroxy-4-(2-hydroxy-4-sulfo-1-naphthylazo)naphthalene-2-carboxylic acid
Calcium Titration Indicator
Calconcarboxylic acid is employed as a metallochromic indicator in complexometric titrations. It is particularly valuable for the determination of calcium in the presence of magnesium, providing a clear visual endpoint when titrated with EDTA.
Analytical Reagent
This compound serves as a specialised reagent in analytical chemistry laboratories. Its ability to form coloured complexes with metal ions like calcium facilitates quantitative analysis through titration methods.
Stain and Dye Application
As a member of the stains and dyes category, Calconcarboxylic acid may be utilized in specific staining procedures within cell biology, hematology, and histology, although its primary documented use is as a titration indicator.
| Molecular weight | 438.41 |
|---|---|
| Empirical formula | C21H14N2O7S |
| Assay | ~0.5% |
| Application | A useful indicator for calcium titrations with EDTA in the presence of magnesium. |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
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 Calconcarboxylic acid used for?
+
Calconcarboxylic acid (CAS 3737-95-9) is primarily used as a metallochromic indicator for the titration of calcium with EDTA, especially in the presence of magnesium.
What are the CAS number and formula for Calconcarboxylic acid?
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The CAS number for Calconcarboxylic acid is 3737-95-9, and its empirical formula (Hill notation) is C21H14N2O7S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Calconcarboxylic acid with an assay of approximately 0.5%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
What are the safety and handling requirements for Calconcarboxylic acid?
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Calconcarboxylic acid is classified as a Warning. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Use with adequate ventilation and wear appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves.
How is Calconcarboxylic acid packed and shipped?
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Calconcarboxylic acid is carefully packed according to industry standards for safe transit and export. Please contact us for specific shipping and export inquiries.
How can I request a sample or quote for Calconcarboxylic acid?
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To request a sample or a quotation for Calconcarboxylic acid, please use the contact form on our website or call our sales team, referencing product CAS 3737-95-9.
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