Sodium Thiocyanate CAS#540-72-7
High Solubility: Easily dissolves in water, ethanol, and acetone, making it suitable for use in diverse solvent systems and chemical processes.
Thermal Stability: Exhibits a relatively high melting point (~287°C), which supports its application in high-temperature industrial operations.
Crystal Purity and Density: Appears as a white rhombic crystal with a specific relative density of 1.735, offering consistent physical properties for controlled formulation and manufacturing.
Reactivity for Specialized Applications: Its strong reactivity with acids, strong bases, and oxidants makes it valuable in chemical synthesis and analytical procedures requiring rapid or vigorous chemical reactions.
Sodium thiocyanate is a white crystal with a rhombic structure, readily soluble in water, ethanol, and acetone. It has a relative density of 1.735 and melts at around 287°C. When heated or exposed to light, it decomposes, releasing toxic gases such as sulfur oxides, nitrogen oxides, and cyanides. It reacts vigorously with acids, strong bases, and powerful oxidizing agents.
Parameters
Melting point | 287 °C (dec.) (lit.) |
bulk density | 800-1000kg/m3 |
density | 1.295 g/mL at 20 °C |
vapor pressure | <1 hPa (20 °C) |
refractive index | 1.545 |
storage temp. | Store at +5°C to +30°C. |
solubility | H2O: 8 M at 20 °C, clear, colorless |
form | Solid |
color | White |
Odor | Odorless |
PH | 6-8 (100g/l, H2O, 20℃) |
Water Solubility | 139 g/100 mL (21 ºC) |
Sensitive | Hygroscopic |
Merck | 14,9327 |
BRN | 3594965 |
Exposure limits | NIOSH: IDLH 25 mg/m3 |
Stability: | Stable. Incompatible with acids, strong bases. May decompose on exposure to light. Contact with acid liberates highly toxic gas. |
InChIKey | VGTPCRGMBIAPIM-UHFFFAOYSA-M |
LogP | 0.58 |
CAS DataBase Reference | 540-72-7(CAS DataBase Reference) |
EPA Substance Registry System | Sodium thiocyanate (540-72-7) |
Absorption | cut-off at 276nm in H2O at 8M |
Safety Information
Hazard Codes | Xn |
Risk Statements | 32-52/53-20/21/22-36 |
Safety Statements | 36/37-61-13-46-26 |
WGK Germany | 1 |
RTECS | XL2275000 |
F | 3 |
TSCA | Yes |
HS Code | 28429011 |
Toxicity | LD50 orally in rats: 764 mg/kg; i.v. in mice: 484 mg/kg (Anderson, Chen) |
Sodium thiocyanate is an important chemical raw material with a wide range of applications across various sectors of the national economy. It is primarily utilized as a solvent in acrylic fiber spinning, as well as in chemical analysis reagents, color film rinsing solutions, certain plant defoliants, and herbicides for airport runways. Additionally, sodium thiocyanate finds use in the pharmaceutical industry, printing and dyeing processes, rubber processing, black nickel electroplating, and the production of artificial mustard oil, among others.
