Sodium α-naphthalenesulfonate
CAS 130-14-3
EC 204-976-0
Formula C10H8O3S.Na
MW 230.22 g/mol
Surfactants Textile, Leather & PaperPrinting & PackagingPlastics & Polymers Emulsification & DispersionSurface Modification & Wetting
Description
Sodium alpha-naphthalenesulfonate (CAS 130-14-3, EC 204-976-0) is an aromatic sulfonate salt derived from naphthalene, also referenced as sodium 1-naphthylsulfonate or alpha salt. It carries no assigned E-code and is classified under HS code 2904100090 within the surfactants category.
In textile and leather processing, it functions as a wetting and dispersing agent by reducing interfacial tension between fiber surfaces and aqueous dye baths, improving dye penetration and uniformity. In plastics and polymer systems, it acts as an emulsifier during polymerization, stabilizing monomer droplets and controlling particle size distribution in the final resin.
Sodium alpha-naphthalenesulfonate is supplied as a powder or crystalline solid and is subject to REACH registration requirements for EU trade. Buyers should confirm technical or industrial grade specifications with the supplier, as no pharmacopoeial or food-grade designation applies to this substance. Standard packaging formats include fiber drums and multi-wall bags.
In textile and leather processing, it functions as a wetting and dispersing agent by reducing interfacial tension between fiber surfaces and aqueous dye baths, improving dye penetration and uniformity. In plastics and polymer systems, it acts as an emulsifier during polymerization, stabilizing monomer droplets and controlling particle size distribution in the final resin.
Sodium alpha-naphthalenesulfonate is supplied as a powder or crystalline solid and is subject to REACH registration requirements for EU trade. Buyers should confirm technical or industrial grade specifications with the supplier, as no pharmacopoeial or food-grade designation applies to this substance. Standard packaging formats include fiber drums and multi-wall bags.
Physical Properties
| Melting Point | 110.26 °C |
| Density | 0.516[at 20℃] |
| Appearance | Deliquescent crystals.Soluble in water, alcohol, and ether. Combustible. |
| Color | White to Almost white |
| Form | powder to crystal |
| Water Solubility | Soluble in water. |
| Log P | -1.776 at 25℃ |
Safety & Handling (Learn More)
Warning GHS07
H
H315H319H335
P
P261P264P271P280P319P321P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 2904100090 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
Sodium 1-naphthalenesulfonatesodium naphthalene-1-sulfonateAlpha saltSodium 1-naphthylsulfonateSodium α-naphthylsulfonate1-NAPHTHALENESULFONIC ACIDNaphthalene-1-sulphonic acid
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