Sodium Thiocyanate, identified by CAS 540-72-7, is a versatile inorganic salt and colorless deliquescent compound characterized by the presence of the thiocyanate anion, which facilitates complex ion formation and high-reactivity substitution processes. This sodium salt functions as a critical accelerator in concrete and mortar admixtures, significantly enhancing the hydration rate of cementitious systems and improving early-age strength development in construction applications. As a robust chemical intermediate, sodium sulfocyanide serves as a fundamental reagent in the production of pesticides, specialized resins, and as a spinning solvent for polyacrylonitrile fibers within the textile industry. Its unique chemical properties enable its role as a discharge agent in fabric printing and as an essential raw material in the synthesis of pharmaceutical and agricultural chemical derivatives. We provide this material with competitive factory pricing to support large-scale industrial manufacturing, offering customized specifications to meet specific purity and moisture content benchmarks. Comprehensive technical support is provided through MSDS, TDS, COA with every delivery to ensure regulatory compliance and safety in bulk supply operations.
Sodium Thiocyanate CAS 540-72-7
- CAS: 540-72-7
- Synonyms: Sodium Thiocyanate, Sodium Rhodanide, Sodium Sulfocyanate, Thiocyanic Acid Sodium Salt
- Einecs: 241-749-5
- Molecular Formula: C3N3Na3S3
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Technical Data Sheet (TDS)
The following physicochemical properties represent the standard for high-purity export grade, aligned with top-tier Chinese manufacturing specifications.
| Property | Specification |
| Appearance | White odorless crystals or powder |
| Purity (NaSCN) | ≥ 99.0% |
| Melting Point | 287°C (548.6°F) |
| Boiling Point | Decomposes at 307°C |
| Solubility in Water | 139 g/100 mL (21°C) – Highly Soluble |
| pH (5% aqueous solution) | 6.0 – 8.0 |
| Iron (Fe) | ≤ 2 ppm |
| Heavy Metals (as Pb) | ≤ 10 ppm |
| Moisture / Water Content | ≤ 1.0% |
Diverse Applications
Sodium Thiocyanate is an essential reagent in several high-growth sectors:
- Pharmaceutical & Life Sciences: Used as a key starting material for the synthesis of various pharmaceutical intermediates, including those for antibiotics and fungicides. It is also utilized in protein extraction and stabilization in R&D labs.
- Textile & Fiber Industry: Acts as a solvent for polyacrylonitrile (PAN) spinning and as a dyeing assistant to improve color consistency and fastness.
- Construction Chemicals: Employed as a concrete hardening accelerator, significantly reducing setting time in cold climates without compromising structural integrity.
- Agrochemicals: A fundamental component in the production of herbicides and pesticides.
- Other Industrial Uses: Used in silver plating, photography (as a sensitizer), and as a corrosion inhibitor in oilfield services.
Quality Assurance & Testing
Our commitment to excellence ensures that every batch of Sodium Thiocyanate meets international standards. We utilize a rigorous quality control framework:
- Analytical Precision: Each batch undergoes HPLC (High-Performance Liquid Chromatography) for purity verification and NMR (Nuclear Magnetic Resonance) spectroscopy if requested for specialized pharmaceutical applications.
- Standard Compliance: Our production facilities operate under ISO 9001:2015 and GMP-aligned environments to ensure traceability from raw material to final shipment.
- Third-Party Inspection: We support pre-shipment inspections by independent agencies like SGS or Intertek to guarantee compliance with your specific COA requirements.
Storage & Safety Handling
Storage Conditions
Sodium Thiocyanate is deliquescent (absorbs moisture from the air). It must be stored in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed and away from strong acids, strong bases, and oxidizing agents. Avoid direct sunlight and moisture.
Safety & PPE Recommendations
- Eye Protection: Use chemical safety goggles or a full face shield.
- Skin Protection: Wear chemical-resistant gloves (nitrile or neoprene) and protective lab coats or aprons.
- Respiratory Protection: Ensure adequate ventilation. In dusty environments, use an approved N95 or P100 particulate respirator.
- General Hygiene: Wash hands thoroughly after handling. Avoid ingestion and inhalation of dust.
FAQ - Technical & Supply Chain
-
Q:
How is the chemical identity of CAS 540-72-7 verified to ensure its suitability for cement acceleration?
A: Identity is confirmed through argentometric titration and moisture analysis, ensuring the precise concentration of the thiocyanate ion required to catalyze the hydration of tricalcium silicate, which distinguishes it from less reactive inorganic salts. -
Q:
In what capacity is this chemical utilized during industrial textile processing??
A: It is typically applied as a solvent in the wet-spinning process of acrylic fibers and as a stabilizing agent in dyeing baths, where it helps maintain the solubility of various dyestuffs and prevents the premature precipitation of chemical additives.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
