CAS No.: 9035-99-8

Formula: Su

EINECS: 618-540-6

Certification: REACH

Environmental Protection: Yes

Color: Yellow

Form: Granules or Powder

Sulphur, also spelled as “sulfur” is a nonmetallic element that exists in nature and can be found in soil, plants, foods, and water, having the Periodic Table atomic symbol of “S”. Sulfur is the tenth most abundant element in the universe. Sulphur may appear as a gas, liquid, or solid. As a mineral, sulphur appears as a pale yellow, tasteless, odorless and brittle material that is non-toxic. Some proteins contain sulfur in the form of amino acids. Sulfur is one of the few elements that is found in its elemental form in nature. Typical sulfur deposits occur in sedimentary limestone/gypsum formations, in limestone/anhydrite formations associated with salt domes, or in volcanic rock.

Sulfur is solid at room temperature, but melts easily at a temperature of only 239-degree Fahrenheit (depending on crystalline form) to a transparent light yellow liquid, becoming deep orange as the temperature is increased. Sulphur becomes progressively lighter in color at lower temperatures and is almost white at the temperature of liquid air. Sulfur does not dissolve in water (insoluble) and forms stable compounds with all elements except the noble gases.

Physical and Chemical Properties, Specifications

Property: Value

Chemical formula: S

Molar mass: 32.06 g/mol

Appearance: Light yellow flakes, crystals, or powder

Solubility, water: Insoluble

Melting point: 120 °C

Density: 2.1 g/cm3

The granular sulphur is produced as a side product from the Gas Processing in particular from the Gas Sweetening Process that removes H2S then is converted to Liquid sulphur in the Sulphur Recovery Units (SRU) and finally that liquid sulphur is processed to produce Granulated Sulphur. Granular sulfur, as the name implies, is created through the gradual buildup of successive layers of sulfur around a central core. As a result, the ultimate product size can be controlled.

Drum granulation of solid sulphur is the most common method of producing dense, spherical sulfur granules. Sulfur granulation is a size enlargement process. Small sulphur seeds (undersized granules) are repeatedly coated with a liquid sulphur spray and cooled. With repeated application of liquid sulphur, the seed increases in volume and weight. The particles are coated until they reach a diameter of 2-6 mm. As the granule is enlarged, each coating of liquid sulphur is fully and structurally bonded to the layer beneath. This creates a spherical granule which is entirely dry and completely free of voids.

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Sulphur: Granules, Lumps, Powder