Granular Sulphur
Granular Sulphur
Granular sulphur, primarily composed of elemental sulphur (S), is a key industrial raw material used predominantly in the production of sulphuric acid (H₂SO₄), one of the most widely manufactured chemicals globally. Sulphuric acid is essential in fertiliser production, particularly for phosphates, making sulphur critical to modern agriculture and global food supply chains.
Beyond fertilisers, granular sulphur is used in chemical manufacturing, petroleum refining, and metal processing. It plays an important role in vulcanisation of rubber, improving the strength and durability of tyres and other elastomer products. Sulphur is also utilised in crop protection products, pharmaceuticals, water treatment, and various industrial intermediates.
Its high purity, ease of handling, and efficient storage characteristics make granular sulphur a strategically important commodity across agriculture, energy, and heavy industry sectors.
Applications
Granular sulphur is primarily used to produce sulphuric acid for fertiliser manufacturing, while also serving key roles in chemical production, rubber vulcanisation, mining and metal processing, petroleum refining, and various industrial applications.
Chemical Information
Chemical Composition and Properties for Granular Sulphur
– General Formula: S (elemental sulphur)
– Primary Component: Elemental sulphur, typically ≥99.5% purity for industrial grades
– Sulphur Content: Commonly 99.5–99.9% by weight, depending on refining and forming process
– Colour: Bright yellow in solid granular form
– Crystal System: Orthorhombic (most stable allotrope at ambient conditions: α-sulphur)
– Hardness: 1.5 – 2.5 on the Mohs scale
– Specific Gravity: ~2.0 – 2.1 at 20°C
Chemical Information
– CAS Number: 7704-34-9 (elemental sulphur)
– Chemical Composition: Pure elemental sulphur (S₈ ring structure in solid state)
– Molecular Weight: 32.06 g/mol (atomic); 256.48 g/mol (S₈ molecule)
– HS Code: 2503.00.00.00 (sulphur of all kinds, other than sublimed, precipitated and colloidal sulphur)
Specifications
Typical Properties
| Mass fraction of Sulphur | 99.95% min. |
| Ash | 0.03% max. |
| Organic Compounds | 0.03% max. |
| Acids converted to sulphuric acid | 0.003% max. |
| Presence of mechanical impurities | Absent |
| Colour | Yellow |
| Moisture | 0.20% max. |
| Particle Size | 1-9mm |
