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.
Both grades come from sulfur recovered during the refining of natural gas and crude oil in Iran. That origin gives a consistent, high-purity product with low ash and moisture.
Sulfur formed into hard, free-flowing granules, typically 2–6 mm. It produces little dust, stores well and handles easily in bulk. This is the standard grade for sulfuric acid plants and fertilizer production.
Finely ground sulfur, milled to the mesh size your process needs, typically from 80 to 325 mesh. Use it where sulfur has to disperse evenly or react quickly.
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 | Granular | Powder |
|---|---|---|
| Purity (S)Typical | 99.5% min | 99.5% min |
| MoistureTypical | 0.5% max | 0.5% max |
| AshTypical | 0.05% max | 0.05% max |
| Acidity (as H₂SO₄)Typical | 0.02% max | 0.02% max |
| Organic carbonTypical | 0.05% max | 0.05% max |
| Arsenic, selenium, telluriumTypical | Traces only | Traces only |
| Particle sizeTypical | 2–6 mm | 80–325 mesh |
| Colour | Bright yellow | Bright yellow |
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 granular sulfur (typically 2–6 mm granules) and sulfur powder milled to the mesh size you need. Tell us if your process needs a different form and we will check availability.
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.
Granular sulfur can be shipped in bulk vessels, 1-ton jumbo bags or 25/50 kg bags. Sulfur powder is 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, or by email to info@katazotrade.ir.
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.