Isopropyl Ethyl Thionocarbamate (CAS No. 141-98-0): Properties, Applications, and Safety Guidelines

Introduction to Isopropyl Ethyl Thionocarbamate

Isopropyl Ethyl Thionocarbamate, with the CAS Number 141-98-0, is an organic compound widely used as a flotation agent in the mining industry and as an intermediate in chemical synthesis. Also known as O-isopropyl-N-ethylthionocarbamate or IPETC, this compound is valued for its selective binding properties and effectiveness in mineral processing.

Chemical Properties

Isopropyl Ethyl Thionocarbamate is a pale yellow to light yellow or amber oily liquid with a slight pungent odor. Its key chemical properties include:

  • CAS Number: 141-98-0

  • Molecular Formula: C6H13NOS

  • Molecular Weight: 147.24 g/mol

  • Boiling Point: Approximately 165.3°C at 760 mmHg

  • Density: 0.990–1.004 g/cm³

  • Flash Point: 53.8°C

  • Solubility: Sparingly soluble in water, highly soluble in alcohol, ethyl ether, benzene, and petroleum ether

  • Vapor Pressure: 1.88 mmHg at 25°C

  • Refractive Index: 1.484

These properties make it an effective and stable compound for industrial applications, particularly in flotation processes.

Applications

1. Flotation Agent in Mining

It is primarily used as a flotation collector in the mining industry for the separation of nonferrous metallic sulfides, such as copper, lead, zinc, and nickel ores. Its high selectivity and low affinity for pyrite make it ideal for producing high-quality concentrates with reduced arsenic content.

2. Chemical Synthesis

As an organic intermediate, IPETC is used in the synthesis of specialty chemicals, including pesticides, herbicides, and pharmaceutical compounds. Its reactive thionocarbamate group enables the production of derivatives for various applications.

3. Analytical Chemistry

The compound is employed in analytical techniques, such as HS-GC-MS, for analyzing illicit liquor and detecting metal ions or sulfide compounds in laboratory settings.

Safety and Handling

Proper handling of Isopropyl Ethyl Thionocarbamate (CAS No. 141-98-0) is critical due to its potential hazards:

  • Hazards: Classified as acutely toxic if swallowed (H302), causes skin irritation (H315), and is harmful to aquatic life with long-lasting effects (H412). It is also flammable due to its low flash point.

  • Protective Measures: Use personal protective equipment (PPE), including chemical-resistant gloves, safety goggles, and respiratory protection. Handle in a well-ventilated area and avoid contact with skin and eyes.

  • First Aid:

    • If Swallowed: Rinse mouth and seek medical help immediately.

    • If on Skin: Wash with plenty of soap and water; seek medical advice if irritation persists.

    • If in Eyes: Rinse with water for at least 15 minutes and consult a doctor.

  • Storage: Store in a cool, dry, well-ventilated area away from ignition sources and incompatible materials, such as oxidizing agents. Keep containers tightly closed.

  • Disposal: Dispose of in accordance with local regulations via licensed chemical destruction plants or controlled incineration with flue gas scrubbing to prevent environmental contamination.

Always consult the Material Safety Data Sheet (MSDS) for detailed safety information before handling.

Frequently Asked Questions (FAQs)

What is the primary use of Isopropyl ethyl thionocarbamate?

It is mainly used as a selective collector in froth flotation for recovering sulfide minerals like copper and zinc from ores.

Is Isopropyl ethyl thionocarbamate safe for mining applications?

It is flammable and irritant, requiring PPE and ventilation, but offers low dosage and high selectivity for safer, more efficient operations compared to xanthates.

What is the shelf life of Isopropyl ethyl thionocarbamate?

Stored properly in sealed containers below 25°C, it maintains stability for 12-24 months, with minimal degradation if protected from moisture and light.

Can Isopropyl ethyl thionocarbamate be shipped internationally?

Yes, it is shipped globally under UN 1993 regulations, in drums or IBCs for quantities from 200 kg to bulk tankers.

How does Isopropyl ethyl thionocarbamate compare to xanthates?

IPETC provides superior selectivity for sulfides with less froth and odor, though xanthates offer faster kinetics; IPETC excels in cleaner concentrates for polymetallic ores.

Is Isopropyl ethyl thionocarbamate water-soluble?

No, it is insoluble in water but disperses well in alkaline pulps, aiding its adsorption onto hydrophobic mineral surfaces during flotation.

Contact Us

Ready to source Isopropyl ethyl thionocarbamate for your flotation needs? Our experts provide tailored quotes, technical support, and reliable supply.

We respond within 24 hours.