Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
Basic Information
- CAS Number: 657-84-1
- Molecular Formula: C?H?NaO?S
- Molecular Weight: 194.18
- Synonyms: p-Toluenesulfonic acid sodium salt; 4-Methylbenzenesulfonic acid sodium salt; Sodium 4-toluenesulfonate; NaPTS; NaTsO; 4-Toluenesulfonic acid sodium
- Classification: Organic sulfonate, synthetic intermediate, surfactant, catalyst auxiliary, electroplating additive
Physical & Chemical Properties
- Appearance: White crystalline powder, odorless, hygroscopic, uniform particle size, free of visible impurities, easy to agglomerate when exposed to moisture.
- Melting Point: >300℃ (literature value), stable at room temperature, no decomposition under normal storage and use conditions.
- Boiling Point: 400℃ (at 101.3 kPa); decomposes at high temperature (above 400℃) to release sulfur oxides (SO?, SO?) and carbon oxides.
- Solubility: Highly soluble in water (67 g/100 mL at 20℃; 260 g/100 mL at 80℃); soluble in methanol, ethanol; slightly soluble in acetone; insoluble in ether, benzene, and petroleum ether.
- Stability: Stable under normal storage conditions (cool, dry); sensitive to strong acids and strong oxidants; avoid prolonged exposure to air to prevent moisture absorption and caking; incompatible with strong reducing agents.
- Density: 1.55 g/cm3 (20℃); Flash Point: 500℃ (closed cup); Refractive Index: 1.520 (estimated at 20℃); Vapor Pressure: Negligible at 25℃; LogP: 0.07 (20℃); pH: 6.5–8.5 (1% aqueous solution, 25℃).
Uses
Sodium p-toluenesulfonate is a versatile organic sulfonate with wide applications in chemical, pharmaceutical, electroplating, and daily chemical fields. As a key organic intermediate, it is widely used in the synthesis of pharmaceuticals, dyes, pigments, and other organic chemicals. In the chemical industry, it serves as a surfactant, emulsifier, and catalyst auxiliary in polymerization, esterification, and etherification reactions, improving reaction efficiency and product quality. In electroplating, it acts as a stabilizer and brightener in electroplating solutions, enhancing the uniformity and gloss of the plating layer. Additionally, it is used as a cleaning agent in industrial detergents, a phase-transfer catalyst in organic synthesis, a raw material for ion-exchange resins, and a laboratory reagent for organic synthesis and analysis.
Packaging & Storage
Packaging: Available in 1kg/5kg plastic bottles (moisture-proof, sealed) for laboratory use, and 25kg woven bags lined with double-layer food-grade plastic bags (moisture-proof, anti-caking) for industrial bulk orders. All packages are clearly labeled with product name, CAS number, purity, molecular formula, net weight, production date, shelf life, and storage requirements. Storage: Store in a cool, dry, well-ventilated warehouse at room temperature (15–25℃), away from moisture, strong acids, strong oxidants, and incompatible substances (such as reducing agents). Keep tightly sealed to prevent air exposure, moisture absorption, and caking. Shelf life is 24 months under proper storage; do not use beyond expiration. Avoid violent collision during transportation to prevent package damage and moisture ingress; keep away from rain and direct sunlight.
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