Sodium thiocyanate
Description
Sodium thiocyanate (CAS 540-72-7), also known as sodium rhodanide or NaSCN, is an inorganic salt used across chemical manufacturing, textile processing, and life sciences as a reactive intermediate and biocidal agent.
Its thiocyanate anion drives reactivity in synthesis, fiber treatment, and antimicrobial applications. In textile manufacturing, NaSCN functions as a solvent and spinning bath component for polyacrylonitrile fiber production.
This chemical directly influences fiber quality and process yield during manufacturing. Leather and paper processors use it as a preservation and biocide agent to control microbial growth during wet processing stages.
Pharmaceutical and biotech applications rely on sodium thiocyanate as a reagent and buffer component in enzyme assays. It is also utilized in protein denaturation studies and chaotropic salt preparations.
Water treatment operations employ it as a catalyst precursor and process chemical in specific treatment chemistries. Sodium thiocyanate is supplied as a white crystalline powder or as an aqueous solution.
Solution concentrations typically range from 50% to 58% by weight for industrial use. Technical grade is the most common commercial form, with higher-purity grades available to meet specific requirements.
These high-purity options are designed to meet pharmaceutical and laboratory specifications. Bulk quantities are standard for industrial buyers, with smaller packaging available for research and specialty use.
Physical Properties
| Melting Point | 300 °C |
| Boiling Point | >400° |
| Density | 1.7 g/cm³ |
| Appearance | white crystalline powder |
| Color | White |
| Odor | Odorless |
| Form | Solid |
| Water Solubility | 139 g/100 mL (21 ºC) |
| Vapor Pressure | <1 hPa (20 °C) |
| Refractive Index | 1.545 |
| pH | 6-8 (100g/l, H2O, 20℃) |
| Log P | 0.58 |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 28429011 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 1 |
Documentation
Other Names
thiocyanate sodium|sodium sulfocyanate|sodium rhodanide|sodium rhodanate|NaSCN|Thiocyanic acid, sodium salt|Scyan|Haimased
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