Sodium thiocyanate

CAS Number
540-72-7
EC Number
630-465-0
Chemical Formula
CHNS.Na
Molecular Weight
81.07 g/mol
Abbreviation
NaSCN

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.

Other Names (Synonyms)

thiocyanate sodium|sodium sulfocyanate|sodium rhodanide|sodium rhodanate|NaSCN|Thiocyanic acid, sodium salt|Scyan|Haimased

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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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

Documentation

Safety & Handling Learn More

Danger
GHS05· Corrosive GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H302 Harmful if swallowed
H312 Harmful in contact with skin
H318 Causes serious eye damage
H319 Causes serious eye irritation

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Trade & Regulatory

HS Code 28429011
Storage Class 13 - Non Combustible Solids
WGK (Germany) 1
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