Carbon Disulfide CS2 CAS 75-15-0

Carbon Disulfide (CS₂) – Versatile Industrial Solvent and Chemical Intermediate

Basic Information

• CAS Number: 75-15-0

• Molecular Formula: CS₂

• Molecular Weight: 76.14 g/mol

• Appearance: Colorless to light‑yellow transparent liquid with ethereal odor; volatile.

• Melting Point: –111.9°C

• Boiling Point: 46.2°C

• Density: 1.26 g/mL (at 20°C)

• Vapor Density (air=1): 2.64

• Vapor Pressure: 53.32 kPa (at 28°C)

• Flash Point: –30°C (closed cup) – extremely flammable

• Explosive Limits: Lower 1.0%, Upper 60.0% (by volume)

• Autoignition Temperature: 90°C

• Octanol/Water Partition Coefficient: 1.86–2.16

• Critical Temperature: 279°C; Critical Pressure: 7.90 MPa

• Heat of Combustion: 1030.8 kJ/mol

• Stability: Stable under normal conditions.

Overview
Carbon disulfide is a high‑purity volatile solvent and chemical intermediate with a wide range of industrial applications. It is produced by the reaction of sulfur with methane or charcoal. The product is supplied at ≥97% purity and is used globally as a key raw material for viscose rayon, cellophane, and carbon tetrachloride, as well as in the production of agricultural chemicals, rubber additives, and flotation agents.

Applications

• Viscose fibers and cellophane: Primary raw material for the production of viscose rayon and cellophane film.

• Flotation reagents: Xanthates derived from CS₂ are widely used as collectors in ore flotation processes.

• Agricultural chemicals: Intermediate for pesticides, fungicides (e.g., mancozeb, thiram, ziram), and herbicides.

• Rubber industry: Used as a solvent for sulfur chloride in vulcanization and as an accelerator intermediate.

• Solvent applications: Excellent solvent for fats, waxes, resins, rubber, and sulfur; used in oil extraction (linseed, olive, animal bones), wool degreasing, and paint/varnish stripping.

• Analytical chemistry: Solvent for testing primary/secondary amines and α‑amino acids, refractive index measurement, and chromatography.

• Corrosion inhibition: Used in the manufacture of corrosion inhibitors for ammonia processing equipment and pipelines.

• Aviation: Additive in aviation kerosene and as a lubricant component.

Key Properties

• High volatility with low boiling point (46.2°C).

• Excellent dissolving power for non‑polar substances (sulfur, oils, resins).

• Highly flammable with low flash point (–30°C); requires strict fire safety measures.

• Toxic; handle with adequate ventilation and protective equipment.

Handling and Storage

• Store in cool, well‑ventilated area, away from heat, sparks, flames, and oxidizers.

• Keep containers tightly sealed; ground/bond containers during transfer to prevent static discharge.

• Use explosion‑proof equipment and adequate local exhaust ventilation.

• Wear appropriate PPE (chemical‑resistant gloves, goggles, protective clothing, respirator if necessary).

• In case of spillage, eliminate ignition sources, absorb with inert material, and dispose of according to local regulations.

Safety
Carbon disulfide is highly toxic and flammable. It can be absorbed through the skin and is a central nervous system depressant. Chronic exposure may cause neurological and cardiovascular effects. Ensure strict adherence to occupational exposure limits (e.g., 10 ppm TWA). For fire, use dry chemical, CO₂, or alcohol‑resistant foam; water may be ineffective.

Packaging
Available in 1 L, 5 L, 20 L, and 200 L drums, as well as bulk quantities (ISO containers). Custom packaging upon request.

Quality Assurance
Each batch is analyzed for purity (GC), water content, acidity, and specific gravity to ensure consistent quality.