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Saccharin
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Description
Saccharin
Other Names: Benzoic sulfimide, o-Benzoic sulfimide, 1,2-Benzisothiazol-3(2H)-one 1,1-dioxide
CAS Number: 81-07-2
Sum Formula: C₇H₅NO₃S
Molar Mass: 183.18 g/mol
Appearance: White crystalline powder
Saccharin is a synthetic heterocyclic aromatic compound with a sulfonamide group. Known for its chemical stability and resistance to hydrolysis, saccharin is used in industrial applications as a marker compound, a pH-stable tracer, and in certain electrochemical processes. Its molecular structure also makes it a useful component in organic synthesis, particularly for introducing sulfonamide functionality.
Chemical and Physical Properties
Density: ~0.83 g/cm³
Melting Point: 226–230°C (decomposes)
Solubility in Water: Slightly soluble (2.0 g/L at 25°C)
Solubility in Organic Solvents: Soluble in alcohol and acetone; poorly soluble in non-polar solvents
pH (saturated solution): ~5.5
Odor: Odorless
Stability: Chemically stable under ambient conditions
Applications
Used as a chemical tracer or marker in industrial formulations
Applied in electroplating baths as a brightener additive
Useful in organic synthesis as a sulfonamide source
May serve as an inert, pH-stable filler or additive in specialty chemicals
Employed in analytical chemistry and method validation (non-consumable use)
Safety
GHS Hazard Statements
Not Classified
First Aid Measures
Eye Contact: Rinse thoroughly with water for several minutes. Seek medical attention if irritation persists
Skin Contact: Wash with soap and water
Inhalation: Move to fresh air and seek medical advice if symptoms occur
Ingestion: Rinse mouth with water. Seek medical help if discomfort appears
Handling and Storage
Store in a dry, cool, and well-ventilated area
Protect from moisture, heat, and direct sunlight
Use appropriate PPE to avoid contact with eyes and skin during handling