Katazo Trade sources high-purity sulfur from Iran's gas and oil refineries and supplies it to fertilizer, chemical, mining and agricultural companies abroad. Tell us your specification and volume, and we will match it to an available lot.
Every form starts as sulfur recovered from the refining of natural gas and crude oil in Iran, so the chemistry stays high-purity. The form decides how the sulfur handles, stores and melts in your process.
Irregular pieces, typically up to 150 mm
Solid sulfur in irregular pieces, broken from solidified sulfur and crushed. It is the most economical form and suits buyers who melt sulfur on site.
Round granules, typically 2–6 mm
Hard, free-flowing granules that produce little dust, store well and handle easily in bulk. The standard form for acid plants and fertilizer producers.
Fine powder, typically 80–325 mesh
Finely ground sulfur, milled to the mesh size your process needs. Use it where sulfur has to disperse evenly or react quickly.
Thin flat flakes, typically 1–3 mm thick
Flake pastilles made by solidifying molten sulfur in a thin layer and breaking it into flakes. They melt quickly and evenly and give off far less dust than powder.
Lentil-shaped, typically 3–6 mm
Uniform, lentil-shaped pastilles formed from drops of molten sulfur on a cooled belt. They are free-flowing and almost dust-free, the cleanest form to handle, store and dose.
These are reference values for the sulfur we usually supply. Your contract is based on the analysis of the actual lot.
We source sulfur from several refineries and producers across Iran, so analyses vary from source to source. When you send an inquiry, we match your required specification to the stock available at that time and share the certificate of analysis for the lot we offer.
| Parameter | Typical value |
|---|---|
| Purity (S) | 99.5% min |
| Moisture | 0.5% max |
| Ash | 0.05% max |
| Acidity (as H₂SO₄) | 0.02% max |
| Organic carbon | 0.05% max |
| Arsenic, selenium, tellurium | Traces only |
| Colour | Bright yellow |
| Product | Shape | Size | Packing |
|---|---|---|---|
| Lump | Irregular pieces | Up to 150 mm | Bulk, jumbo bags |
| Granular | Round granules | 2–6 mm | Bulk, jumbo, 25/50 kg |
| Powder | Fine powder | 80–325 mesh | Jumbo, 25/50 kg |
| Flakes | Thin flat flakes | 1–3 mm thick | Jumbo, 25/50 kg |
| Lentil pastilles | Lentil-shaped | 3–6 mm | Bulk, jumbo, 25/50 kg |
Iran refines natural gas from South Pars, the world's largest gas field, along with crude oil at refineries across the country. Sulfur recovered from that sour gas and oil is a steady, high-purity by-product, which makes Iran one of the leading sulfur exporters in the world.
Sources: U.S. Geological Survey, Mineral Commodity Summaries 2026 (Sulfur); Policy Center for the New South (2026); National Iranian Gas Company via Shana.
Sulfur is a basic input for some of the world's largest industries. We supply buyers in each of them.
Phosphate fertilizers and sulfur-enhanced products for crops.
Feedstock for acid plants serving chemicals, fertilizers and metals.
Leaching of copper and nickel, including battery-metal projects.
Vulcanizing agent for tyres and technical rubber goods.
Fungicides, soil conditioning and sulfur nutrition for farms.
Sulfur compounds, dyes, pharmaceuticals and process chemicals.
Commercial terms differ between the plants we work with, so every deal starts with your inquiry. From there, the steps are always the same.
Product, quantity, destination port and the specification you need.
We reply with an available lot, its analysis and the commercial terms.
We agree on Incoterms, payment, packing and the loading schedule.
An independent inspector checks quality and quantity before loading.
The cargo ships with invoice, B/L, certificate of analysis and certificate of origin.
We are a trading company focused on one commodity. That focus lets us know the plants, the grades and the paperwork, and answer your questions quickly.
Request a quoteWe work with multiple refineries and producers in Iran, so we can match both your specification and your volume.
You see the certificate of analysis for the actual lot before signing, not a generic data sheet.
Packing, inspection, loading and export documents are arranged for you.
Talk to us on WhatsApp or by email in English and get answers from the people handling your order.
If your question isn't here, send it on WhatsApp or by email.
We export sulfur in five forms: lump sulfur, granular sulfur (typically 2–6 mm), sulfur powder (typically 80–325 mesh), sulfur flakes and lentil-shaped sulfur pastilles. Tell us about your process and we will suggest the form that fits.
Typical purity is 99.5% minimum, and many lots test higher. Because we source from several refineries and producers, each lot has its own analysis, which we share before you commit.
Minimum quantity depends on the product, packing and the supplying plant. We confirm it in the quotation after reviewing your inquiry.
Commercial terms such as Incoterms, payment method and loading port differ between the plants we work with. We agree them with you for each inquiry, based on your destination and the lot we offer.
Lump, granular and pastille sulfur can be shipped in bulk vessels or jumbo bags, and granules and pastilles also in 25/50 kg bags. Powder and flakes are packed in 25/50 kg bags or jumbo bags. Containerized shipments are possible.
Yes. Quality and quantity can be checked before loading by an independent inspection company agreed in the contract.
Standard export documents include the commercial invoice, packing list, bill of lading, certificate of analysis and certificate of origin. Additional documents can be arranged on request.
Send the product, quantity, destination port and required specification by WhatsApp at +98 904 667 8185, by email to info@katazotrade.com, or call us on +98 904 667 8185, +98 993 160 0193 or +92 334 806 0832.
Send us the product, quantity, destination port and the specification you need. We will come back with an available lot, its analysis and commercial terms.