Diisoamyl Sulfide CAS 544-02-5

Diisoamyl Sulfide (DIAS, CAS 544-02-5) is a colourless to light-yellow liquid with a typical sulfide odour. It is a selective extraction reagent for palladium and gold in metal refining, and is also used as a synthesis intermediate and in savoury flavour chemistry. UATChem supplies 98.0% min grade (GC) in 180 kg steel drums and 1000 L IBC totes, with COA, TDS and SDS on every order.

  • CAS: 544-02-5
  • Synonyms: Diisoamyl thioether; Bis(3-methylbutyl) sulfide; Diisopentyl sulfide; DIAS
  • Molecular Formula: C10H22S
  • Molecular Weight: 174.35
  • Appearance: Colourless to light-yellow liquid
  • Assay (GC): 98.0% min
  • Relative Density: 0.835 – 0.845
  • Flash Point: ≥ 80 °C (closed cup)
  • Boiling Range: 180 – 195 °C
  • Packaging: 180 kg steel drum; 1000 L IBC tote
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Product Overview

DIAS is a branched sulfur-containing liquid used mainly in precious-metal refining. Diluted with kerosene, it picks palladium and gold out of acid leach solutions, leaving base metals and platinum behind, so it is a standard tool for separating and recovering these metals. The same material serves as a sulfur source in organic synthesis and, at trace levels, gives roasted, meaty and onion-like notes in processed flavours.

Applications

  • Palladium and gold extraction. The main use is selective recovery of Pd and Au from leach liquors in PGM refining and precious-metal recycling.
  • Synthesis intermediate. A convenient sulfur source for making sulfur-containing compounds and fine chemicals.
  • Flavour chemistry. Adds roasted, meaty and onion-like character to savoury flavour systems at trace levels.

Specifications

Parameter Specification
Assay (GC) 98.0% min
Relative Density 0.835 – 0.845
Flash Point ≥ 80 °C, closed cup
Boiling Range 180 – 195 °C
Appearance Colourless to light-yellow liquid

Packaging, Storage and Ordering

  • Packaging: 180 kg steel drums or 1000 L IBC totes; trial drums on request; custom sizes and private labelling available.
  • Keep containers sealed, cool and away from ignition sources; handle with ventilation and PPE per the SDS.
  • COA, TDS and SDS ship with every lot; samples available; quotes within one working day.
  • Tell us the application (extraction, synthesis or flavour), quantity, destination and document needs in your RFQ.

FAQ

Q: What is diisoamyl sulfide used for?

A: Extracting palladium and gold from leach solutions, plus synthesis and savoury flavour use.

Q: How is DIAS handled and stored?

A: Sealed, cool and away from ignition sources; it is a combustible liquid, not a powder.

Q: What purity do you supply?

A: 98.0% min by GC, in 180 kg steel drums or 1000 L IBC totes.

Q: Does it have a strong smell?

A: Yes, a typical sulfide odour similar to onion or roast; keep areas ventilated.

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