Calmagite
Calmagite (CAS 3147-14-6) is a specialized organic compound with the molecular formula HOC10H5[N=NC6H3(OH)CH3]SO3H and a molecular weight of 358.37 g/mol. This indicator dye is primarily utilised in analytical chemistry for the precise titration of calcium and magnesium ions using EDTA. Its distinct colour change provides a clear endpoint, making it a valuable reagent in quantitative analysis within laboratory settings.
- IUPAC
- 1-(1-Hydroxy-4-methyl-2-phenylazo)-2-naphthol-4-sulfonic acid,3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid
- Synonyms
- 1-(1-Hydroxy-4-methyl-2-phenylazo)-2-naphthol-4-sulfonic acid3-Hydroxy-4-(2-hydroxy-5-methylphenylazo)naphthalene-1-sulfonic acid
![Calmagite (HOC10H5[N=NC6H3(OH)CH3]SO3H) — chemical structure, CAS 3147-14-6; Life Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F3147-14-6.png&w=3840&q=75)
EDTA Titration Indicator
Calmagite serves as a crucial indicator in complexometric titrations, specifically for the determination of calcium (Ca²⁺) and magnesium (Mg²⁺) ions using ethylenediaminetetraacetic acid (EDTA). It exhibits a sharp colour change at the titration endpoint, facilitating accurate quantification.
Analytical Reagent
As an analytical reagent, Calmagite is employed in various quantitative analyses where metal ion concentrations need to be precisely determined. Its chromogenic properties are essential for visual endpoint detection in volumetric analysis.
Metal Ion Determination
This compound is instrumental in laboratories for the specific detection and quantification of metal ions, particularly those in hard water analysis. The reliable colour transition ensures consistent analytical results.
| Molecular weight | 358.37 |
|---|---|
| Linear formula | HOC10H5[N=NC6H3(OH)CH3]SO3H |
| Grade | indicator grade |
| Application | Used as an indicator in the titration of calcium or magnesium with EDTA. |
| Melting point | 330 °C(lit.) |
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
| 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.
| Gene Information | human ... MPL(4352) |
|---|---|
| Absorption | λmax 602 nm |
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 Calmagite used for?
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Calmagite is primarily used as an indicator in the complexometric titration of calcium and magnesium ions with EDTA, providing a visual endpoint for quantitative analysis.
What are the CAS number and formula for Calmagite?
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The CAS number for Calmagite is 3147-14-6, and its chemical formula is HOC10H5[N=NC6H3(OH)CH3]SO3H.
What grade and purity does Tech Serve Solutions supply for Calmagite?
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Tech Serve Solutions supplies Calmagite in indicator grade. Specific purity details are available on the product's Certificate of Analysis.
How should Calmagite be handled safely?
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Calmagite is classified as a warning substance. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment in a well-ventilated area, avoiding dust formation and contact with skin, eyes, and clothing.
How is Calmagite typically packed, shipped, and exported?
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Calmagite is carefully packed to ensure its integrity during transit and is available for global export by Tech Serve Solutions, adhering to all relevant shipping regulations.
How can I request a sample or quote for Calmagite?
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To request a sample or a detailed quote for Calmagite, please contact the Tech Serve Solutions sales team through our website or by phone.
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