Granular & Micronized Sulphur
Coolak International Group supplies high-purity industrial sulphur directly from production sources in Russia, Kazakhstan, Turkmenistan and Iran, and exports it to global markets. Our focus is consistent quality, conformity to order specifications, and reliable delivery across the B2B supply chain.
The sulphur we offer is primarily recovered sulphur, a by-product of gas and oil refining, with a bright yellow colour and export-grade quality. Purity can be tailored from 99.5% up to 99.98% depending on buyer requirements.
Available Forms
Granular Sulphur: suited to bulk shipping and long-term storage, with minimal dust and high flowability. The standard choice for sulphuric acid production, fertilizers, and high-volume chemical industries.
Micronized Sulphur: fine, uniform particle size for applications that require high surface area and fast reactivity. Ideal for specialty formulations, the rubber industry, and advanced agricultural use.
Technical Specification
Parameter | Unit | Supply Range |
|---|---|---|
Sulphur (S) | % | 99.5 – 99.98 |
Colour | — | Bright Yellow |
Moisture | % | ≤ 0.5 |
Ash | % | ≤ 0.05 |
Acidity (as H₂SO₄) | % | ≤ 0.05 |
Organic matter / Hydrocarbons | % | ≤ 0.02 |
Arsenic (As) | ppm | Trace / as requested |
Note: Final specifications are confirmed by the COA of each shipment and fixed in the contract. Custom grades to the buyer’s standard are available.
Applications
Sulphur serves a wide range of industries, and we recommend the appropriate form and grade based on each buyer’s needs: sulphuric acid production, fertilizers and agriculture, chemical industries, rubber and polymers, and mineral processing.
Origins & Capacity
Origin | Delivery Terms | Minimum Order |
|---|---|---|
Russia | CIF | From 50,000 MT / month |
Kazakhstan | CIF | From 50,000 MT / month |
Turkmenistan | FOB Bandar Abbas | From 10,000 MT |
Iran | FOB Bandar Abbas | From 10,000 MT |
Packaging & Logistics
Packaging is provided in bulk or jumbo bags, according to buyer requirements and shipping conditions. Coolak’s supply chain covers full coordination of sea freight and management of shipping documentation.
Documentation & Compliance
Every shipment is accompanied by a complete set of commercial and technical documents: Certificate of Analysis (COA), third-party inspection (SGS), Certificate of Origin, and Material Safety Data Sheet (MSDS). Shipments comply with the IMSBC Code requirements for chemical cargoes.
