
Luminol - 3-Aminophthalhydrazide - Chemiluminescence Pure [CAS: 521-31-3] - 1g
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Description
Luminol
Other Names: 3-Aminophthalhydrazide, 5-Amino-2,3-dihydro-1,4-phthalazinedione
CAS Number: 521-31-3
Sum Formula: C₈H₇N₃O₂
Molar Mass: 177.16 g/mol
Appearance: Pale yellow to light beige crystalline powder
Luminol is an organic compound best known for its ability to exhibit chemiluminescence — emitting a blue glow when oxidized in an appropriate alkaline medium. It is widely used in chemical detection, forensic science, and research involving reactive oxygen species.
Chemical and Physical Properties
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Density: ~1.6 g/cm³
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Melting Point: 319–325°C (decomposes)
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Boiling Point: Not applicable (decomposes)
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Solubility in Water: Slightly soluble in cold water; soluble in alkaline solutions
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Solubility in Other Solvents: Soluble in DMSO, ethanol, and basic solutions
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Odor: Odorless
Applications
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Forensic Science: Used to detect trace amounts of blood at crime scenes via chemiluminescent reaction with iron in hemoglobin.
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Chemical Analysis: Applied in assays for detecting reactive oxygen species or metal ions.
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Research and Education: Demonstrates oxidation-reduction and chemiluminescence reactions in teaching environments.
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Analytical Chemistry: Functions as a probe in various biochemical assays and sensor development.
Safety
Signal Word: Warning
H302 (15.3%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (94.9%): Causes skin irritation [Warning Skin corrosion/irritation]
H319 (94.9%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (93.2%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501
Handling and Storage
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Storage Conditions: Store in a tightly closed container in a cool, dry, well-ventilated area. Protect from light and moisture.
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Handling Precautions: Avoid formation of dust. Handle under inert atmosphere when possible. Use proper personal protective equipment (PPE).