Calconcarboxylic acid
Indicator
Reagent
Code: #51264
Alias
Calcium carboxylic acid indicator; calcium red, calcium indicator, calcium carboxylic acid, 3-hydroxy-4-[(2-hydroxy-4-sulfo-1-naphthyl)azo]-2-naphthalenecarboxylic acid, 2 -Hydroxy-1-(2-hydroxy-4-sulfo-1-naphthylazo)-3-naphthoic acid
CAS Number
3737-95-9
science Other reagents with same CAS 3737-95-9
blur_circular Chemical Specifications
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Molecular Information
Weight
438.41 g/mol
Formula
C₂₁H₁₄N₂O₇S
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Registry Numbers
EC Number
223-117-0
MDL Number
MFCD00004078
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Physical Properties
Melting Point
300 °C(lit.)
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Storage & Handling
Storage
room temperature
description Product Description
Calconcarboxylic acid is widely used as a metallochromic indicator in complexometric titrations, particularly for determining calcium and magnesium ions in water hardness analysis. It forms a distinct color change when bound to these metal ions, making it valuable in analytical chemistry for accurate endpoint detection. Additionally, it is employed in biochemical research for studying metal ion interactions in biological systems. Its stability and sensitivity to specific metal ions make it a reliable tool in both laboratory and industrial settings.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Ignition Residue as Sulfate | 0-0.5 |
| Complexation Test | PASS |
| Solubility in NaOH Solution | Almost Transparent |
| Appearance | Black powder |
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